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Download financial data from Yahoo Finance

Source: R/download_data.R
download_data.Rd

This function downloads stock data from https://finance.yahoo.com/.

Usage

download_data(
  symbol,
  from = "1902-01-01",
  to = Sys.Date(),
  file = NULL,
  verbose = TRUE
)

Arguments

symbol

A character, the stock's symbol. It must match the identifier on https://finance.yahoo.com/.

from

A character, a date in format "YYYY-MM-DD", setting the lower data bound. Must not be earlier than "1902-01-01" (default).

to

A character, a date in format "YYYY-MM-DD", setting the upper data bound. Default is the current date Sys.date().

file

Either

  • NULL (default) to return the data as a data.frame,

  • or a character, the name of the file where the data is saved as a .csv-file.

verbose

Set to TRUE to return information about download success.

Value

A data.frame if file = NULL.

Details

The downloaded data has the following columns:

  • Date: The date.

  • Open: Opening price.

  • High: Highest price.

  • Low: Lowest price.

  • Close: Close price adjusted for splits.

  • Adj.Close: Close price adjusted for dividends and splits.

  • Volume: Trade volume.

Examples

### download 21st century DAX data
data <- download_data(symbol = "^GDAXI", from = "2000-01-03")
head(data)
#>         Date    Open    High     Low   Close Adj.Close   Volume
#> 1 2000-01-03 6961.72 7159.33 6720.87 6750.76   6750.76 43072500
#> 2 2000-01-04 6747.24 6755.36 6510.46 6586.95   6586.95 46678400
#> 3 2000-01-05 6585.85 6585.85 6388.91 6502.07   6502.07 52682800
#> 4 2000-01-06 6501.45 6539.31 6402.63 6474.92   6474.92 41180600
#> 5 2000-01-07 6489.94 6791.53 6470.14 6780.96   6780.96 56058900
#> 6 2000-01-10 6785.47 6975.26 6785.47 6925.52   6925.52 42006200