Mumbai, Sept. 14 -- The US tariff overhang and high-frequency trader Jane Street's absence from Indian markets following a regulatory order in July resulted in a significant drop in trading turnover both on equities cash and options segments last month, per market analysts.

The previous time that month-on-month turnover on the National Stock Exchange fell more sharply was in March 2024, when it slumped 24%, per NSE data.

In the NSE cash segment, where shares are bought and sold daily, turnover plummeted 19% month-on-month to Rs.17.77 trillion from Rs.21.85 trillion in July, per NSE data. Equity options' premium turnover fell 10% sequentially to Rs.8.99 trillion in August.

The drag was chiefly because of reduced activity by the cohort i...