npm install -g yahoo-dl

yahoo-dl -t w get AAPL

Usage: yahoo-dl [options] [command]

Yahoo stock price downloader.

Options:
  -V, --version                output the version number
  -t, --timeframe <d,w,m>      Timeframe d for daily, w for weekly, m for monthly. (default: "w")
  -p, --period <104>           Period of the selected time frame e.g. 200, 12 etc... (default: 104)
  -o, --stdout                 Output will be written to stdout.
  -f, --filename <symbol.csv>  Output will be written to a file default is symbol.csv
  -s, --skip                   Do not overwrite if file exits. Usefull to retry a download.
  -h, --help                   output usage information

Commands:
  get <symbol>

kg@tmp $ yahoo-dl get spy
ℹ Writing to /Users/kg/tmp/spy.csv
✔ Done spy  104w

kg@tmp $ cat spy.csv
Date,Open,High,Low,Close,Adj Close,Volume
2016-10-24,215.000000,215.320007,211.710007,212.539993,204.589417,420237800
2016-10-31,212.929993,213.190002,208.380005,208.550003,200.748672,485446500
2016-11-07,208.550003,218.309998,208.550003,216.419998,208.324280,743158200
2016-11-14,217.029999,219.270004,215.720001,218.500000,210.326462,404338000
2016-11-21,219.169998,221.559998,219.000000,221.520004,213.233505,232394000
...
2018-10-01,292.109985,293.209991,286.220001,287.820007,287.820007,391529300
2018-10-08,287.049988,288.859985,270.359985,275.950012,275.950012,834839200
2018-10-15,275.549988,281.149994,274.299988,276.250000,276.250000,605470400

cat fidelity-sectors.txt | xargs -L 1 -t yahoo-dl -t w -p 20 get

yahoo-dl -t w -p 20 get FSTCX
ℹ Writing to /Users/kg/git/stock-ranker/FSTCX.csv
✔ Done FSTCX  20w
yahoo-dl -t w -p 20 get FSRFX
ℹ Writing to /Users/kg/git/stock-ranker/FSRFX.csv
✔ Done FSRFX  20w
yahoo-dl -t w -p 20 get FSUTX
ℹ Writing to /Users/kg/git/stock-ranker/FSUTX.csv
✔ Done FSUTX  20w
yahoo-dl -t w -p 20 get FWRLX
ℹ Writing to /Users/kg/git/stock-ranker/FWRLX.csv
✔ Done FWRLX  20w