New Delhi, Aug. 11 -- Foreign portfolio investors (FPIs) have raised their bearish bets on Nifty and Bank Nifty derivatives to near record highs, signalling that a market rebound may yet be hard to come by or might peter out quickly.

They have also been selling in the cash market, which analysts said reflects caution amid muted earnings growth and rising tariff tensions between India and the US.

The FPI long-short ratio on index futures fell to 8.28% on Friday, down from 8.58% last Wednesday and close to the 7.75% low seen on 22 March 2023.

FPIs also stepped up selling of index call options and buying of index puts on Friday, a sign they expect markets to stay flat or fall, which will enable them to pocket the premiums paid by call buy...