Package {yahoofinancer}

Type: Package
Title: Fetch Data from Yahoo Finance API
Version: 0.5.0
Description: Obtain historical and near real time data related to stocks, index and currencies from the Yahoo Finance API. This package is community maintained and is not officially supported by 'Yahoo'. The accuracy of data is only as correct as provided on https://finance.yahoo.com/.
Depends: R(≥ 3.4)
Imports: curl, dplyr, httr, jsonlite, lubridate, magrittr, purrr, R6
Suggests: covr, httptest, httptest2, testthat (≥ 3.0.0)
Config/testthat/edition: 3
License: MIT + file LICENSE
Encoding: UTF-8
URL: https://yahoofinancer.rsquaredacademy.com/, https://github.com/rsquaredacademy/yahoofinancer
BugReports: https://github.com/rsquaredacademy/yahoofinancer/issues
RoxygenNote: 7.3.3
NeedsCompilation: no
Packaged: 2026-05-21 07:44:59 UTC; HP
Author: Aravind Hebbali [aut, cre]
Maintainer: Aravind Hebbali <hebbali.aravind@gmail.com>
Repository: CRAN
Date/Publication: 2026-05-21 08:40:02 UTC

yahoofinancer package

Description

Fetch Data from Yahoo Finance API

Details

See the README on GitHub

Author(s)

Maintainer: Aravind Hebbali hebbali.aravind@gmail.com

See Also

Useful links:

R6 Class Representing an Index

Description

Base class for getting all data related to indices from Yahoo Finance API.

Format

An R6 class object

Super class

yahoofinancer::YahooFinanceBase -> Index

Active bindings

index

Deprecated. Returns self$symbol.

Methods

Public methods

Inherited methods

Method new()

Create a new Index object

Usage
Index$new(symbol = NA, index = NA)
Arguments
symbol

Symbol

index

Deprecated. Use symbol instead.

Returns

A new 'Index' object

Examples
nifty_50 <- Index$new('^NSEI')

Method set_index()

Set a new index.

Usage
Index$set_index(symbol = NA, index = NA)
Arguments
symbol

New symbol

index

Deprecated. Use symbol instead.

Examples
indice <- Index$new('^NSEI')
indice$set_index('^NDX')

Method clone()

The objects of this class are cloneable with this method.

Usage
Index$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Examples


## ------------------------------------------------
## Method `Index$new`
## ------------------------------------------------

nifty_50 <- Index$new('^NSEI')

## ------------------------------------------------
## Method `Index$set_index`
## ------------------------------------------------

indice <- Index$new('^NSEI')
indice$set_index('^NDX')

R6 Class Representing a Ticker

Description

Base class for getting all data related to ticker from Yahoo Finance API.

Format

An R6 class object

Super class

yahoofinancer::YahooFinanceBase -> Ticker

Active bindings

valuation_measures

Retrieves valuation measures

Methods

Public methods

Inherited methods

Method clone()

The objects of this class are cloneable with this method.

Usage
Ticker$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Multi-Symbol Ticker Data Aggregator

Description

An R6 class to manage and aggregate data from multiple Yahoo Finance tickers simultaneously. It wraps the Ticker class to provide a unified, long-format data interface suitable for bulk analysis and visualization.

Details

The Tickers class automates the process of iterating over a vector of symbols. It handles per-symbol errors gracefully via an internal aggregate_data helper, ensuring that a failure in one symbol does not prevent the collection of data for others.

Most properties return a data.frame where the first column is symbol, facilitating easy filtering and joining in tidy workflows.

Public fields

symbols

A unique character vector of symbols being tracked.

ticker_objs

A named list of underlying Ticker R6 objects.

Active bindings

recommendations

Related symbols suggested by Yahoo Finance and their relevance scores.

valuation_measures

Quarterly valuation statistics including PE and Enterprise Value.

technical_insights

Technical indicator snapshots (e.g., RSI, Moving Averages).

regular_market_price

The current market price for each symbol.

regular_market_time

The timestamp of the last market trade.

regular_market_volume

The current trading volume.

regular_market_day_high

The highest price during the current trading session.

regular_market_day_low

The lowest price during the current trading session.

previous_close

The closing price of the previous trading day.

fifty_two_week_high

The highest price over the last 52 weeks.

fifty_two_week_low

The lowest price over the last 52 weeks.

currency

The currency code (e.g., "USD") for the symbols.

exchange_name

The short name of the stock exchange.

full_exchange_name

The full name of the stock exchange.

first_trade_date

The Unix timestamp of the first recorded trade.

timezone

The timezone code (e.g., "EDT").

exchange_timezone_name

The full name of the exchange's timezone.

Methods

Public methods

Method new()

Create a new Tickers object.

Usage
Tickers$new(symbols)
Arguments
symbols

A character vector of Yahoo Finance ticker symbols.

Returns

A new Tickers object.

Method get_history()

Retrieve historical market data for all symbols.

Usage
Tickers$get_history(period = "1y", interval = "1d", start = NULL, end = NULL)
Arguments
period

The duration of history to fetch; "1d", "5d", "1mo", "1y", "max" etc.

interval

The frequency of data points; "1m", "2m", "5m", "1h", "1d", "1wk" etc.

start

Date or timestamp for the start of the period.

end

Date or timestamp for the end of the period.

Returns

A tidy data.frame containing historical prices and volumes.

Method aggregate_data()

Internal helper to execute a method across all symbols and combine results.

Usage
Tickers$aggregate_data(fn)
Arguments
fn

A function or anonymous function that takes a Ticker object.

Returns

A combined data.frame or NULL.

Method clone()

The objects of this class are cloneable with this method.

Usage
Tickers$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Examples

## Not run: 
# Initialize for a set of tech stocks
stocks <- Tickers$new(c("AAPL", "MSFT", "GOOGL"))

# 1. Get 1 month of historical daily prices
hist_data <- stocks$get_history(period = "1mo", interval = "1d")
head(hist_data)

# 2. Get current market prices for the group
current_prices <- stocks$regular_market_price

# 3. View recommended related symbols and scores
recs <- stocks$recommendations

# 4. Get technical insights (RSI, Moving Averages)
tech <- stocks$technical_insights

## End(Not run)

R6 Class Representing a Yahoo Finance Base Object

Description

Base class for Ticker and Index classes.

Format

An R6 class object

Public fields

symbol

Symbol for which data is retrieved.

Methods

Public methods

Method new()

Create a new YahooFinanceBase object.

Usage
YahooFinanceBase$new(symbol = NA)
Arguments
symbol

Symbol.

Method set_symbol()

Set a new symbol.

Usage
YahooFinanceBase$set_symbol(symbol)
Arguments
symbol

New symbol

Method get_history()

Retrieves historical pricing data.

Usage
YahooFinanceBase$get_history(
  period = "ytd",
  interval = "1d",
  start = NULL,
  end = NULL
)
Arguments
period

Length of time. Defaults to 'ytd'.

interval

Time between data points. Defaults to '1d'.

start

Specific starting date. String or date object.

end

Specific ending date. String or date object.

Returns

A data.frame.

Method clone()

The objects of this class are cloneable with this method.

Usage
YahooFinanceBase$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Currency converter

Description

Retrieve current conversion rate between two currencies as well as historical rates.

Usage

currency_converter(
  from = "EUR",
  to = "USD",
  start = NULL,
  end = NULL,
  period = "ytd",
  interval = "1d"
)

Arguments

from

Currency to convert from.

to

Currency to convert to.

start

Specific starting date. String or date object in yyyy-mm-dd format.

end

Specific ending date. String or date object in yyyy-mm-dd format.

period

Length of time. Defaults to 'ytd' Valid values are:

  • '1d'

  • '5d'

  • '1mo'

  • '3mo'

  • '6mo'

  • '1y'

  • '2y'

  • '5y'

  • '10y'

  • 'ytd'

  • 'max'

interval

Time between data points. Defaults to '1d' Valid values are:

  • '1h'

  • '1d'

  • '5d'

  • '1wk'

  • '1mo'

  • '3mo'

Value

A data.frame.

Examples


currency_converter('GBP', 'USD', '2022-07-01', '2022-07-10')
currency_converter('GBP', 'USD', period = '1mo', interval = '1d')

Currencies

Description

List of currencies Yahoo Finance supports.

Usage

get_currencies()

Value

Symbol, short and long name of the currencies.

Examples


get_currencies()

Market Summary

Description

Summary info of relevant exchanges for specific country.

Usage

get_market_summary(country = "US")

Arguments

country

Name of the country.

Value

A data.frame.

Examples


get_market_summary(country = 'US')

Description

List of trending securities for specific country.

Usage

get_trending(country = "US", count = 10)

Arguments

country

Name of the country.

count

Number of securities.

Value

Securities trending in the country.

Examples


get_trending()

Symbol validation

Description

Validate symbols before retrieving data.

Usage

validate(symbol = NA, index = NA)

Arguments

symbol

Ticker, index or fund name.

index

Deprecated. Use symbol instead.

Examples

validate("aapl")
validate("aapls")