I am running an asset pricing study. The data is from 1990 to 2020. When the data is adjusted for dividends and splits, stock prices of several firms become negative.
How does one handle negative prices and returns and the results downstream?
If you run this query - you shall be able to download data for SHANTIGEAR listedn on BSE - The adjusted price is negative (Obviously Adjusted close is the closing price after adjustments for all applicable splits and dividend distributions. Data is adjusted using appropriate split and dividend multipliers, adhering to Center for Research in Security Prices (CRSP) standards.) - https://in.finance.yahoo.com/quote/SHANTIGEAR.BO/history?period1=1026000000&period2=1624665600&interval=1d&filter=history&frequency=1d&includeAdjustedClose=true