Error with stocks data

[sebvalton67116]

First and foremost, I wanted to let you know how much I adore your work and how big of a fan I am of your Empyrial library on Python! I use it quite often for my analyses.

I'm reaching out today because I've been facing an issue when running the code, regardless of the date I choose: it indicates there's a data problem. The specific issue is as follows:

ValueError Traceback (most recent call last)
in <cell line: 27>()
25 )
26 benchmark=["SPY"]
---> 27 empyrial(portfolio)
28
29

1 frames
/usr/local/lib/python3.10/dist-packages/empyrial/main.py in get_returns(stocks, wts, start_date, end_date)
148 initial_alloc = wts/assets.iloc[0]
149 if initial_alloc.isna().any():
--> 150 raise ValueError("Some stock is not available at initial state!")
151 portfolio_value = (assets * initial_alloc).sum(axis=1)
152 returns = portfolio_value.pct_change()[1:]

ValueError: Some stock is not available at initial state!

I've tried to resolve it by using more recent dates to download titles, but it still doesn't work.

[santoshlite]

Could you give a minimal reproducible example, please?

[dvolosh]

Make sure the tickers are NYSE/NASDAQ and not international. Was getting the same error

[santoshlite]

Actually if they are tickers that can be found on yfinance in general they should work. You can also use custom data if needed (check the doc!)