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## OptionStratLib v0.14.2: Financial Options Library
### Table of Contents
1. [Introduction](#introduction)
2. [Features](#features)
3. [Core Modules](#core-modules)
4. [Trading Strategies](#trading-strategies)
5. [Setup Instructions](#setup-instructions)
6. [Library Usage](#library-usage)
7. [Usage Examples](#usage-examples)
8. [Testing](#testing)
9. [Contribution and Contact](#contribution-and-contact)
### Introduction
OptionStratLib is a comprehensive Rust library for options trading and strategy development across multiple asset classes.
This versatile toolkit enables traders, quants, and developers to model, analyze, and visualize options strategies with a
robust, type-safe approach. The library focuses on precision with decimal-based calculations, extensive test coverage,
and a modular architecture built on modern Rust 2024 edition.
### Features
#### 1. **Pricing Models**
- **Black-Scholes Model**: European options pricing with full Greeks support
- **Binomial Tree Model**: American and European options with early exercise capability
- **Monte Carlo Simulations**: Complex pricing scenarios and path-dependent options
- **Telegraph Process Model**: Advanced stochastic modeling for jump-diffusion processes
- **American Options**: Barone-Adesi-Whaley approximation for early exercise
- **Exotic Options**: Complete support for 14 exotic option types (see below)
#### 2. **Greeks Calculation**
- Complete Greeks suite: Delta, Gamma, Theta, Vega, Rho, Vanna, Vomma, Veta,
Charm, Color
- Real-time sensitivity analysis
- Greeks visualization and risk profiling
- Custom Greeks implementations with adjustable parameters
#### 3. **Volatility Models**
- Implied volatility calculation using Newton-Raphson method
- Volatility surface construction and interpolation
- Historical volatility estimation
- Advanced volatility modeling tools
#### 4. **Option Chain Management**
- Complete option chain construction and analysis
- Strike price generation algorithms
- Chain data import/export (CSV/JSON formats)
- Advanced filtering and selection tools
- Option data grouping and organization
#### 5. **Trading Strategies (25+ Strategies)**
- **Single Leg**: Long/Short Calls and Puts
- **Spreads**: Bull/Bear Call/Put Spreads
- **Butterflies**: Long/Short Butterfly Spreads, Call Butterfly
- **Complex**: Iron Condor, Iron Butterfly
- **Volatility**: Long/Short Straddles and Strangles
- **Income**: Covered Calls (with spot leg support), Poor Man's Covered Call
- **Protection**: Protective Puts, Collars
- **Custom**: Flexible custom strategy framework
- **Multi-Asset**: Strategies combining options with spot, futures, or perpetuals
#### 6. **Risk Management & Analysis**
- Position tracking and management
- Break-even analysis with multiple break-even points
- Profit/Loss calculations at various price points
- Risk profiles and comprehensive visualizations
- Delta neutrality analysis and adjustment
- Probability analysis for strategy outcomes
#### 7. **Backtesting Framework**
- Comprehensive backtesting engine
- Performance metrics calculation
- Strategy optimization tools
- Historical analysis capabilities
#### 8. **Simulation Tools**
- Monte Carlo simulations for strategy testing
- Telegraph process implementation
- Random walk simulations
- Custom simulation frameworks
- Parametrized simulations with adjustable inputs
#### 9. **Visualization & Plotting**
- Strategy payoff diagrams
- Greeks visualization
- 3D volatility surfaces
- Risk profiles and P&L charts
- Interactive charts (powered by `plotly.rs`)
- Binomial tree visualization
- Comprehensive plotting utilities
#### 10. **Data Management**
- Efficient decimal-based calculations using `rust_decimal`
- CSV/JSON import/export functionality
- Time series data handling
- Price series management and manipulation
- Robust data validation and error handling
#### 11. **Mathematical Tools**
- Curve interpolation techniques
- Surface construction and analysis
- Geometric operations for financial modeling
- Advanced mathematical utilities for options pricing
#### 12. **Exotic Option Pricing**
Complete pricing support for all exotic option types:
- **Asian**: Arithmetic and geometric average price options
- **Barrier**: Up/Down, In/Out barrier options with rebates
- **Binary**: Cash-or-nothing and asset-or-nothing options
- **Lookback**: Fixed and floating strike lookback options
- **Compound**: Options on options
- **Chooser**: Options to choose call or put at future date
- **Cliquet**: Forward-starting options with local caps/floors
- **Rainbow**: Multi-asset best-of/worst-of options
- **Spread**: Kirk's approximation for price differentials
- **Quanto**: Currency-protected options
- **Exchange**: Margrabe's formula for asset exchange
- **Power**: Non-linear payoff options
### Core Modules
The library is organized into the following key modules:
#### **Model** (`model/`)
Core data structures and types for options trading:
- `option.rs`: Complete option structures with pricing and Greeks
- `position.rs`: Position management and P&L tracking
- `expiration.rs`: Flexible expiration date handling (Days/DateTime)
- `positive.rs`: Type-safe positive number implementation
- `types.rs`: Common enums (OptionType, Side, OptionStyle)
- `trade.rs`: Trade execution and management
- `format.rs`: Data formatting utilities
- **`leg/`**: Multi-instrument leg support for strategies
- `traits.rs`: Common leg traits (`LegAble`, `Marginable`, `Fundable`, `Expirable`)
- `spot.rs`: `SpotPosition` for underlying asset positions
- `perpetual.rs`: `PerpetualPosition` for crypto perpetual swaps
- `future.rs`: `FuturePosition` for exchange-traded futures
- `leg_enum.rs`: `Leg` enum unifying all position types
#### **Pricing Models** (`pricing/`)
Advanced pricing engines for options valuation:
- `black_scholes_model.rs`: European options pricing with Greeks
- `binomial_model.rs`: American/European options with early exercise
- `monte_carlo.rs`: Path-dependent and exotic options pricing
- `telegraph.rs`: Jump-diffusion process modeling
- `payoff.rs`: Payoff function implementations
- `american.rs`: Barone-Adesi-Whaley approximation
- **Exotic Options**:
- `asian.rs`: Asian option pricing
- `barrier.rs`: Barrier option pricing
- `binary.rs`: Binary/Digital option pricing
- `lookback.rs`: Lookback option pricing
- `compound.rs`: Compound option pricing
- `chooser.rs`: Chooser option pricing
- `cliquet.rs`: Cliquet option pricing
- `rainbow.rs`: Rainbow option pricing
- `spread.rs`: Spread option pricing
- `quanto.rs`: Quanto option pricing
- `exchange.rs`: Exchange option pricing
- `power.rs`: Power option pricing
#### **Strategies** (`strategies/`)
Comprehensive trading strategy implementations:
- `base.rs`: Core traits (Strategable, BasicAble, Positionable, etc.)
- **Single Leg**: `long_call.rs`, `short_call.rs`, `long_put.rs`, `short_put.rs`
- **Spreads**: `bull_call_spread.rs`, `bear_call_spread.rs`, `bull_put_spread.rs`, `bear_put_spread.rs`
- **Butterflies**: `long_butterfly_spread.rs`, `short_butterfly_spread.rs`, `call_butterfly.rs`
- **Complex**: `iron_condor.rs`, `iron_butterfly.rs`
- **Volatility**: `long_straddle.rs`, `short_straddle.rs`, `long_strangle.rs`, `short_strangle.rs`
- **Income**: `covered_call.rs`, `poor_mans_covered_call.rs`
- **Protection**: `protective_put.rs`, `collar.rs`
- `custom.rs`: Flexible custom strategy framework
- `probabilities/`: Probability analysis for strategy outcomes
- `delta_neutral/`: Delta neutrality analysis and adjustment
#### **Volatility** (`volatility/`)
Volatility modeling and analysis:
- `utils.rs`: Implied volatility calculation (Newton-Raphson method)
- `traits.rs`: Volatility model interfaces
- Advanced volatility surface construction
#### **Greeks** (`greeks/`)
Complete Greeks calculation suite:
- Delta, Gamma, Theta, Vega, Rho, Vanna, Vomma, Veta, Charm, Color calculations
- Real-time sensitivity analysis
- Greeks-based risk management
#### **Chains** (`chains/`)
Option chain management and analysis:
- `chain.rs`: Option chain construction and manipulation
- `utils.rs`: Chain analysis and filtering tools
- CSV/JSON import/export functionality
- Strike price generation algorithms
#### **Backtesting** (`backtesting/`)
Strategy performance analysis:
- `metrics.rs`: Performance metrics calculation
- `results.rs`: Backtesting results management
- `types.rs`: Backtesting data structures
#### **Simulation** (`simulation/`)
Monte Carlo and stochastic simulations:
- Random walk implementations
- Telegraph process modeling
- Custom simulation frameworks
- Parametrized simulation tools
#### **Visualization** (`visualization/`)
Comprehensive plotting and charting:
- `plotly.rs`: Interactive charts with Plotly integration
- Strategy payoff diagrams
- Greeks visualization
- 3D volatility surfaces
- Risk profile charts
#### **Metrics** (`metrics/`)
Performance, risk, and liquidity metrics analysis:
- **Price Metrics**: Volatility skew curves
- **Risk Metrics**:
- Implied Volatility curves (by strike) and surfaces (strike vs time)
- Risk Reversal curves (by strike)
- Dollar Gamma curves (by strike)
- **Composite Metrics**:
- Vanna-Volga Hedge surfaces (price vs volatility)
- Delta-Gamma Profile curves (by strike) and surfaces (price vs time)
- Smile Dynamics curves (by strike) and surfaces (strike vs time)
- **Liquidity Metrics**:
- Bid-Ask Spread curves (by strike)
- Volume Profile curves (by strike) and surfaces (strike vs time)
- Open Interest Distribution curves (by strike)
- **Stress Metrics**:
- Volatility Sensitivity curves (by strike) and surfaces (price vs volatility)
- Time Decay Profile curves (by strike) and surfaces (price vs time)
- Price Shock Impact curves (by strike) and surfaces (price vs volatility)
- **Temporal Metrics**:
- Theta curves (by strike) and surfaces (price vs time)
- Charm (Delta Decay) curves (by strike) and surfaces (price vs time)
- Color (Gamma Decay) curves (by strike) and surfaces (price vs time)
#### **Risk Management** (`risk/`)
Risk analysis and management tools:
- Position risk metrics
- Break-even analysis
- Risk profile generation
#### **P&L** (`pnl/`)
Profit and loss calculation:
- Real-time P&L tracking
- Historical P&L analysis
- Performance attribution
#### **Curves & Surfaces** (`curves/`, `surfaces/`)
Mathematical tools for financial modeling:
- Curve interpolation techniques
- Surface construction and analysis
- 3D visualization capabilities
#### **Error Handling** (`error/`)
Robust error management:
- Comprehensive error types for each module
- Type-safe error propagation
- Detailed error reporting
### Core Components
```mermaid
classDiagram
class Options {
+option_type: OptionType
+side: Side
+underlying_symbol: String
+strike_price: Positive
+expiration_date: ExpirationDate
+implied_volatility: Positive
+quantity: Positive
+underlying_price: Positive
+risk_free_rate: Decimal
+option_style: OptionStyle
+dividend_yield: Positive
+exotic_params: Option~ExoticParams~
+calculate_price_black_scholes()
+calculate_price_binomial()
+time_to_expiration()
+is_long()
+is_short()
+validate()
+to_plot()
+calculate_implied_volatility()
+delta()
+gamma()
+theta()
+vega()
+rho()
+vanna()
+vomma()
+veta()
+charm()
+color()
}
class Position {
+option: Options
+position_cost: Positive
+entry_date: DateTime<Utc>
+open_fee: Positive
+close_fee: Positive
+net_cost()
+net_premium_received()
+unrealized_pnl()
+pnl_at_expiration()
+validate()
}
class Leg {
<<enumeration>>
Option(Position)
Spot(SpotPosition)
Future(FuturePosition)
Perpetual(PerpetualPosition)
+is_option()
+is_spot()
+is_linear()
+delta()
+pnl_at_price()
}
class SpotPosition {
+symbol: String
+quantity: Positive
+cost_basis: Positive
+side: Side
+date: DateTime<Utc>
+open_fee: Positive
+close_fee: Positive
+pnl_at_price()
+delta()
+market_value()
+break_even_price()
}
class ExpirationDate {
+Days(Positive)
+Date(NaiveDate)
+get_years()
+get_date()
+get_date_string()
+from_string()
}
class Positive {
+value: Decimal
+ZERO: Positive
+ONE: Positive
+format_fixed_places()
+round_to_nice_number()
+is_positive()
}
class OptionStyle {
<<enumeration>>
Call
Put
}
class OptionType {
<<enumeration>>
European
American
Bermuda
Asian
Barrier
Binary
Lookback
Compound
Chooser
Cliquet
Rainbow
Spread
Quanto
Exchange
Power
}
class Side {
<<enumeration>>
Long
Short
}
class Graph {
<<interface>>
+graph_data()
+graph_config()
+to_plot()
+write_html()
+write_png()
+write_svg()
+write_jpeg()
}
class Greeks {
<<interface>>
+delta()
+gamma()
+theta()
+vega()
+rho()
+calculate_all_greeks()
}
Position o-- Options : contains
Leg o-- Position : Option variant
Leg o-- SpotPosition : Spot variant
SpotPosition *-- Side : has
SpotPosition *-- Positive : uses
Options *-- OptionStyle : has
Options *-- OptionType : has
Options *-- Side : has
Options *-- ExpirationDate : has
Options *-- Positive : uses
```
### Pricing Models Architecture
```mermaid
flowchart TB
subgraph Standard["Standard Options"]
EU[European]
AM[American]
BE[Bermuda]
end
subgraph PathDependent["Path-Dependent"]
AS[Asian]
LB[Lookback]
BA[Barrier]
CL[Cliquet]
end
subgraph MultiAsset["Multi-Asset"]
RB[Rainbow]
SP[Spread]
EX[Exchange]
end
subgraph Special["Special Payoffs"]
BI[Binary]
PW[Power]
QU[Quanto]
CO[Compound]
CH[Chooser]
end
BS[black_scholes] --> EU
BS --> PathDependent
BS --> MultiAsset
BS --> Special
BAW[barone_adesi_whaley] --> AM
BIN[binomial_model] --> AM
BIN --> BE
MC[monte_carlo] --> PathDependent
```
### Strategy Traits System
```mermaid
classDiagram
class Strategable {
<<trait>>
Master trait combining all capabilities
}
class BasicAble {
<<trait>>
+get_underlying_price()
+get_underlying_symbol()
+get_expiration()
+get_title()
}
class Positionable {
<<trait>>
+get_positions()
+add_position()
+modify_position()
}
class Strategies {
<<trait>>
+get_net_premium_received()
+get_max_profit()
+get_max_loss()
+get_total_cost()
}
class BreakEvenable {
<<trait>>
+get_break_even_points()
+calculate_break_even()
}
class Profit {
<<trait>>
+get_point_at_price()
+calculate_profit_at()
}
class Greeks {
<<trait>>
+delta()
+gamma()
+theta()
+vega()
}
class DeltaNeutrality {
<<trait>>
+get_delta()
+suggest_delta_adjustments()
}
class Graph {
<<trait>>
+to_plot()
+write_html()
+write_png()
}
Strategable --|> BasicAble
Strategable --|> Positionable
Strategable --|> Strategies
Strategable --|> BreakEvenable
Strategable --|> Profit
Strategable --|> Greeks
Strategable --|> DeltaNeutrality
Strategable --|> Graph
```
### Metrics Framework
```mermaid
flowchart LR
subgraph OptionChain
OC[OptionChain]
end
subgraph Curves["Curve Metrics"]
IV_C[IV Curve]
RR_C[Risk Reversal]
DG_C[Dollar Gamma]
TH_C[Theta Curve]
VA_C[Vanna Curve]
SK_C[Skew Curve]
end
subgraph Surfaces["Surface Metrics"]
IV_S[IV Surface]
TH_S[Theta Surface]
CH_S[Charm Surface]
VS_S[Vol Sensitivity]
TD_S[Time Decay]
end
OC --> Curves
OC --> Surfaces
Curves --> |"2D Analysis"| Analysis[Risk Analysis]
Surfaces --> |"3D Analysis"| Analysis
```
### Trading Strategies
OptionStratLib provides 25+ comprehensive trading strategies organized by complexity and market outlook:
#### **Single Leg Strategies**
Basic directional strategies for beginners:
- **Long Call**: Bullish strategy with unlimited upside potential
- **Short Call**: Bearish strategy collecting premium with limited profit
- **Long Put**: Bearish strategy with high profit potential
- **Short Put**: Bullish strategy collecting premium with assignment risk
#### **Spread Strategies**
Defined risk strategies with limited profit/loss:
- **Bull Call Spread**: Moderately bullish with limited risk and reward
- **Bear Call Spread**: Moderately bearish credit spread
- **Bull Put Spread**: Moderately bullish credit spread
- **Bear Put Spread**: Moderately bearish debit spread
#### **Butterfly Strategies**
Market neutral strategies profiting from low volatility:
- **Long Butterfly Spread**: Profits from price staying near middle strike
- **Short Butterfly Spread**: Profits from price moving away from middle strike
- **Call Butterfly**: Butterfly using only call options
#### **Complex Multi-Leg Strategies**
Advanced strategies for experienced traders:
- **Iron Condor**: Market neutral strategy with wide profit zone
- **Iron Butterfly**: Market neutral strategy with narrow profit zone
#### **Volatility Strategies**
Strategies that profit from volatility changes:
- **Long Straddle**: Profits from high volatility in either direction
- **Short Straddle**: Profits from low volatility (range-bound market)
- **Long Strangle**: Similar to straddle but with different strikes
- **Short Strangle**: Credit strategy profiting from low volatility
#### **Income Generation Strategies**
Strategies focused on generating regular income:
- **Covered Call**: Stock/spot ownership with call selling for income (now with full spot leg support)
- **Poor Man's Covered Call**: LEAPS-based covered call alternative
#### **Protection Strategies**
Risk management and hedging strategies:
- **Protective Put**: Downside protection for stock positions
- **Collar**: Combination of covered call and protective put
#### **Custom Strategy Framework**
- **Custom Strategy**: Flexible framework for creating any multi-leg strategy
- Supports unlimited number of legs
- Full integration with all analysis tools
- Complete trait implementation for consistency
#### **Strategy Analysis Features**
All strategies include comprehensive analysis capabilities:
- **Profit/Loss Analysis**: P&L at any price point and time
- **Break-Even Points**: Multiple break-even calculations
- **Greeks Analysis**: Real-time risk metrics
- **Probability Analysis**: Success probability calculations
- **Delta Neutrality**: Delta-neutral position analysis
- **Visualization**: Interactive payoff diagrams and risk profiles
- **Optimization**: Find optimal strikes and expirations
#### **Strategy Traits System**
All strategies implement a comprehensive trait system:
- **Strategable**: Master trait combining all strategy capabilities
- **BasicAble**: Basic strategy information (symbol, price, etc.)
- **Positionable**: Position management and modification
- **Strategies**: Core strategy calculations (P&L, break-even, etc.)
- **Validable**: Strategy validation and error checking
- **BreakEvenable**: Break-even point calculations
- **Profit**: Profit/loss analysis at various price points
- **Greeks**: Greeks calculations for risk management
- **DeltaNeutrality**: Delta-neutral analysis and adjustments
- **ProbabilityAnalysis**: Outcome probability calculations
- **Graph**: Visualization and plotting capabilities
### Setup Instructions
#### Prerequisites
- Rust 1.80 or higher (2024 edition)
- Cargo package manager
#### Installation
Add OptionStratLib to your `Cargo.toml`:
```toml
[dependencies]
optionstratlib = "0.14.2"
```
Or use cargo to add it to your project:
```bash
cargo add optionstratlib
```
#### Optional Features
The library includes optional features for enhanced functionality:
```toml
[dependencies]
optionstratlib = { version = "0.14.2", features = ["plotly"] }
```
- `plotly`: Enables interactive visualization using plotly.rs
- `async`: Enables asynchronous I/O operations for OptionChain and OHLCV data
#### Building from Source
Clone the repository and build using Cargo:
```bash
git clone https://github.com/joaquinbejar/OptionStratLib.git
cd OptionStratLib
cargo build --release
```
Run comprehensive test suite:
```bash
cargo test --all-features
```
Generate documentation:
```bash
cargo doc --open --all-features
```
Run benchmarks:
```bash
cargo bench
```
### Library Usage
#### Basic Option Creation and Pricing
```rust
use optionstratlib::{Options, OptionStyle, OptionType, Side, ExpirationDate};
use positive::{pos_or_panic,Positive};
use rust_decimal_macros::dec;
use optionstratlib::greeks::Greeks;
// Create a European call option
let option = Options::new(
OptionType::European,
Side::Long,
"AAPL".to_string(),
pos_or_panic!(150.0), // strike_price
ExpirationDate::Days(pos_or_panic!(30.0)),
pos_or_panic!(0.25), // implied_volatility
Positive::ONE, // quantity
pos_or_panic!(155.0), // underlying_price
dec!(0.05), // risk_free_rate
OptionStyle::Call,
pos_or_panic!(0.02), // dividend_yield
None, // exotic_params
);
// Calculate option price using Black-Scholes
let price = option.calculate_price_black_scholes().unwrap();
tracing::info!("Option price: ${:.2}", price);
// Calculate Greeks for risk management
let delta = option.delta().unwrap();
let gamma = option.gamma().unwrap();
let theta = option.theta().unwrap();
let vega = option.vega().unwrap();
let vanna = option.vanna().unwrap();
let vomma = option.vomma().unwrap();
let veta = option.veta().unwrap();
let charm = option.charm().unwrap();
let color = option.color().unwrap();
tracing::info!("Greeks - Delta: {:.4}, Gamma: {:.4}, Theta: {:.4},
Vega: {:.4}, Vanna: {:.4}, Vomma: {:.4}, Veta: {:.4}
Charm: {:.4}, Color: {:.4}",
delta, gamma, theta, vega, vanna, vomma, veta, charm, color);
```
#### Working with Trading Strategies
```rust
use positive::{Positive, pos_or_panic};
use optionstratlib::ExpirationDate;
use optionstratlib::strategies::Strategies;
use optionstratlib::strategies::bull_call_spread::BullCallSpread;
use optionstratlib::strategies::base::{BreakEvenable, BasicAble};
use optionstratlib::visualization::Graph;
use rust_decimal_macros::dec;
use std::error::Error;
fn main() -> Result<(), Box<dyn Error>> {
use optionstratlib::pricing::Profit;
let underlying_price = Positive::HUNDRED;
// Create a Bull Call Spread strategy
let strategy = BullCallSpread::new(
"AAPL".to_string(),
underlying_price,
pos_or_panic!(95.0), // long_strike
pos_or_panic!(105.0), // short_strike
ExpirationDate::Days(pos_or_panic!(30.0)),
pos_or_panic!(0.25), // implied_volatility
dec!(0.05), // risk_free_rate
pos_or_panic!(2.50), // long_call_premium
pos_or_panic!(2.50), // long_call_open_fee
pos_or_panic!(1.20), // short_call_premium
pos_or_panic!(1.20), // short_call_close_fee
Default::default(), Default::default(),
Default::default(), Default::default()
);
// Analyze the strategy
tracing::info!("Strategy: {}", strategy.get_title());
tracing::info!("Break-even points: {:?}", strategy.get_break_even_points()?);
tracing::info!("Max profit: ${:.2}", strategy.get_max_profit().unwrap_or(Positive::ZERO));
tracing::info!("Max loss: ${:.2}", strategy.get_max_loss().unwrap_or(Positive::ZERO));
tracing::info!("Net premium: ${:.2}", strategy.get_net_premium_received()?);
// Calculate P&L at different price points
let prices = vec![pos_or_panic!(90.0), pos_or_panic!(95.0), Positive::HUNDRED, pos_or_panic!(105.0), pos_or_panic!(110.0)];
for price in prices {
let pnl = strategy.get_point_at_price(&price)?;
tracing::info!("P&L at ${}: ${:.2}", price, pnl.0);
}
// Generate visualization
#[cfg(feature = "plotly")]
{
strategy.write_html("Draws/Visualization/bull_call_spread.html".as_ref())?;
}
Ok(())
}
```
#### Advanced Features: Volatility Analysis
```rust
use optionstratlib::prelude::*;
fn main() -> Result<(), Box<dyn std::error::Error>> {
// Create an option for implied volatility calculation
let mut option = Options::new(
OptionType::European,
Side::Long,
"AAPL".to_string(),
pos_or_panic!(105.0), // strike
ExpirationDate::Days(pos_or_panic!(90.0)),
pos_or_panic!(0.20), // initial IV guess
Positive::ONE, // quantity
Positive::HUNDRED, // underlying price
dec!(0.05), // risk free rate
OptionStyle::Call,
pos_or_panic!(0.02), // dividend yield
None,
);
let market_price = pos_or_panic!(5.50);
let iv = implied_volatility(market_price, &mut option, 100)?;
tracing::info!("Implied volatility: {:.2}%", iv.to_f64() * 100.0);
Ok(())
}
```
#### Custom Strategy Creation
```rust
use optionstratlib::prelude::*;
// Define common parameters
let underlying_symbol = "DAX".to_string();
let underlying_price = pos_or_panic!(24000.0);
let expiration = ExpirationDate::Days(pos_or_panic!(30.0));
let implied_volatility = pos_or_panic!(0.25);
let risk_free_rate = dec!(0.05);
let dividend_yield = pos_or_panic!(0.02);
let fee = Positive::TWO;
// Create a long put option
let long_put_option = Options::new(
OptionType::European,
Side::Long,
underlying_symbol.clone(),
pos_or_panic!(24070.0), // strike
expiration.clone(),
implied_volatility,
Positive::ONE, // quantity
underlying_price,
risk_free_rate,
OptionStyle::Put,
dividend_yield,
None,
);
let long_put = Position::new(
long_put_option,
pos_or_panic!(150.0), // premium
Utc::now(),
fee,
fee,
None,
None,
);
// Create a long call option
let long_call_option = Options::new(
OptionType::European,
Side::Long,
underlying_symbol.clone(),
pos_or_panic!(24030.0), // strike
expiration.clone(),
implied_volatility,
Positive::ONE, // quantity
underlying_price,
risk_free_rate,
OptionStyle::Call,
dividend_yield,
None,
);
let long_call = Position::new(
long_call_option,
pos_or_panic!(120.0), // premium
Utc::now(),
fee,
fee,
None,
None,
);
// Create CustomStrategy with the positions
let positions = vec![long_call, long_put];
let strategy = CustomStrategy::new(
"DAX Straddle Strategy".to_string(),
underlying_symbol,
"A DAX long straddle strategy".to_string(),
underlying_price,
positions,
Positive::ONE,
30,
implied_volatility,
);
tracing::info!("Strategy created: {}", strategy.get_title());
```
### Testing
OptionStratLib includes a comprehensive test suite with over 3800 unit and integration tests:
#### **Running Tests**
Run all tests:
```bash
cargo test --all-features
```
Run tests for specific modules:
```bash
cargo test strategies::bull_call_spread
cargo test pricing::black_scholes
cargo test volatility::utils
```
Run tests with output:
```bash
cargo test -- --nocapture
```
#### **Test Categories**
- **Unit Tests**: Individual function and method testing
- **Integration Tests**: Cross-module functionality testing
- **Strategy Tests**: Comprehensive strategy validation
- **Pricing Model Tests**: Accuracy and performance testing
- **Greeks Tests**: Mathematical precision validation
- **Visualization Tests**: Chart generation and export testing
- **Property-Based Tests**: Mathematical invariant testing with `proptest`
- **Exotic Options Tests**: Complete coverage for all 14 exotic option types
#### **Benchmarking**
Run performance benchmarks:
```bash
cargo bench
```
Generate test coverage report:
```bash
cargo tarpaulin --all-features --out Html
```
### Examples
The library includes extensive examples organized by functionality:
- **`examples/examples_strategies/`**: Complete strategy examples (25+ strategies)
- **`examples/examples_chains/`**: Option chain analysis examples
- **`examples/examples_pricing/`**: Pricing model demonstrations
- **`examples/examples_visualization/`**: Interactive chart examples
- **`examples/examples_volatility/`**: Volatility analysis examples
- **`examples/examples_simulation/`**: Monte Carlo and simulation examples
- **`examples/examples_exotics/`**: Exotic option pricing examples
Run examples:
```bash
cargo run --example bull_call_spread --features plotly
cargo run --example black_scholes_pricing
cargo run --example volatility_surface
```
### Contribution and Contact
#### **Contributing**
Contributions are welcome! Please follow these guidelines:
1. **Fork** the repository
2. **Create** a feature branch: `git checkout -b feature/amazing-feature`
3. **Commit** your changes: `git commit -m 'Add amazing feature'`
4. **Push** to the branch: `git push origin feature/amazing-feature`
5. **Open** a Pull Request
#### **Development Setup**
```bash
git clone https://github.com/joaquinbejar/OptionStratLib.git
cd OptionStratLib
cargo build --all-features
cargo test --all-features
```
#### **Code Quality**
- All code must pass `cargo clippy` without warnings
- Format code with `cargo fmt`
- Add tests for new functionality
- Update documentation for API changes
- Follow Rust 2024 edition best practices
#### **Support**
- **Issues**: Report bugs and request features on GitHub
- **Discussions**: Join community discussions on GitHub Discussions
- **Documentation**: Comprehensive docs available at docs.rs
---
**OptionStratLib v0.14.2** - Built with ❤️ in Rust for the financial community
## Contribution and Contact
We welcome contributions to this project! If you would like to contribute, please follow these steps:
1. Fork the repository.
2. Create a new branch for your feature or bug fix.
3. Make your changes and ensure that the project still builds and all tests pass.
4. Commit your changes and push your branch to your forked repository.
5. Submit a pull request to the main repository.
If you have any questions, issues, or would like to provide feedback, please feel free to contact the project maintainer:
### **Contact Information**
- **Author**: Joaquín Béjar García
- **Email**: jb@taunais.com
- **Telegram**: [@joaquin_bejar](https://t.me/joaquin_bejar)
- **Repository**: <https://github.com/joaquinbejar/OptionStratLib>
- **Documentation**: <https://docs.rs/optionstratlib>
We appreciate your interest and look forward to your contributions!
## ✍️ License
Licensed under **MIT** license