Leverage Ratio (F&O)
The ratio of the notional value of a futures or options position to the margin deposited to initiate that position, quantifying how many times the deployed capital is amplified in terms of actual market exposure.
Leverage is the defining characteristic that distinguishes derivative trading from direct equity investing. In F&O, a trader deploys a fraction of the position's full economic value as margin, yet gains or loses as if the full notional amount were at risk. The leverage ratio made this amplification explicit.
If a Nifty futures contract had a notional value of Rs 11 lakh and the total margin required (SPAN plus exposure margin) was Rs 1.10 lakh, the leverage ratio was ten times. A one percent move in the Nifty index — representing Rs 11,000 on the notional value — was therefore equivalent to a ten percent move on the Rs 1.10 lakh margin deployed. This amplification worked identically in both directions: gains were magnified, but so were losses.
Leverage ratios in Indian F&O markets varied by product type. Index futures offered the highest leverage (lowest margin as a percentage of notional value) because their diversified composition made them less volatile on a percentage basis than individual stocks. Stock futures typically required higher margin percentages — 15 to 25 percent of notional value depending on the stock's volatility — resulting in lower effective leverage ratios of four to seven times.
For option buyers, the leverage calculation was different. An option buyer's maximum loss was the premium paid, not the full notional value. But the effective leverage was often very high because deep in-the-money options could be priced at 10 to 20 percent of the notional value, and OTM options might trade for 1 to 2 percent of notional, implying leverage ratios of 50 to 100 times for a full move. This high leverage on OTM options was balanced by their low probability of achieving intrinsic value.
SEBI's introduction of the peak margin framework in 2020-21 effectively reduced accessible leverage by requiring margins to be present throughout the trading day rather than only at end of day. Many retail brokers adjusted their intraday leverage offerings downward in compliance, reducing the effective leverage ratios available compared to the pre-peak-margin era.