Crate yahoo_finance_api

Expand description

§yahoo! finance API

This project provides a set of functions to receive data from the the yahoo! finance website via their API. This project is licensed under Apache 2.0 or MIT license (see files LICENSE-Apache2.0 and LICENSE-MIT).

Since version 0.3 and the upgrade to reqwest 0.10, all requests to the yahoo API return futures, using async features. Therefore, the functions need to be called from within another async function with .await or via functions like block_on. The examples are based on the tokio runtime applying the tokio-test crate.

Use the blocking feature to get the previous behavior back: i.e. yahoo_finance_api = {"version": "1.0", features = ["blocking"]}.

§Get the latest available quote:

use yahoo_finance_api as yahoo;
use std::time::{Duration, UNIX_EPOCH};
use time::OffsetDateTime;
use tokio_test;

fn main() {
    let provider = yahoo::YahooConnector::new().unwrap();
    // get the latest quotes in 1 minute intervals
    let response = tokio_test::block_on(provider.get_latest_quotes("AAPL", "1d")).unwrap();
    // extract just the latest valid quote summery
    // including timestamp,open,close,high,low,volume
    let quote = response.last_quote().unwrap();
    let time: OffsetDateTime =
        OffsetDateTime::from(UNIX_EPOCH + Duration::from_secs(quote.timestamp));
    println!("At {} quote price of Apple was {}", time, quote.close);
}

§Get history of quotes for given time period:

use yahoo_finance_api as yahoo;
use std::time::{Duration, UNIX_EPOCH};
use time::{macros::datetime, OffsetDateTime};
use tokio_test;

fn main() {
    let provider = yahoo::YahooConnector::new().unwrap();
    let start = datetime!(2020-1-1 0:00:00.00 UTC);
    let end = datetime!(2020-1-31 23:59:59.99 UTC);
    // returns historic quotes with daily interval
    let resp = tokio_test::block_on(provider.get_quote_history("AAPL", start, end)).unwrap();
    let quotes = resp.quotes().unwrap();
    println!("Apple's quotes in January: {:?}", quotes);
}

§Get the history of quotes for time range

Another method to retrieve a range of quotes is by requesting the quotes for a given period and lookup frequency. Here is an example retrieving the daily quotes for the last month:

use yahoo_finance_api as yahoo;
use std::time::{Duration, UNIX_EPOCH};
use tokio_test;

fn main() {
    let provider = yahoo::YahooConnector::new().unwrap();
    let response = tokio_test::block_on(provider.get_quote_range("AAPL", "1d", "1mo")).unwrap();
    let quotes = response.quotes().unwrap();
    println!("Apple's quotes of the last month: {:?}", quotes);
}

§Search for a ticker given a search string (e.g. company name):

use yahoo_finance_api as yahoo;
use tokio_test;

fn main() {
    let provider = yahoo::YahooConnector::new().unwrap();
    let resp = tokio_test::block_on(provider.search_ticker("Apple")).unwrap();

    let mut apple_found = false;
    println!("All tickers found while searching for 'Apple':");
    for item in resp.quotes
    {
        println!("{}", item.symbol)
    }
}

Some fields like longname are only optional and will be replaced by default values if missing (e.g. empty string). If you do not like this behavior, use search_ticker_opt instead which contains Option<String> fields, returning None if the field found missing in the response.