FMP
The FMP Market Biggest Losers endpoint provides a list of the stocks that have lost the most value on a given day. Investors can use this information to identify stocks that are underperforming and to potential trading opportunities.
For example, if a stock is one of the biggest losers on a given day, it may indicate that there is weak demand for the stock and that it is likely to continue to fall in price. Investors may want to consider selling the stock if they believe that it is likely to continue to depreciate.
Endpoint:
https://financialmodelingprep.com/api/v3/stock_market/losers
FMP