Bear Put Spread
A bear put spread is a limited-risk, limited-reward options strategy formed by purchasing a put option at a higher strike price and simultaneously writing a put option at a lower strike price on the same underlying and expiry, designed to profit from a moderate decline in the underlying's price.
The bear put spread was the directional mirror of the bull call spread and served traders who held a moderately bearish view on an index or stock without wanting to commit to the full cost of a naked long put. The strategy was constructed as a net debit trade — the cost of the higher-strike put purchased exceeded the premium received from writing the lower-strike put, with the difference representing the total capital at risk.
In the NSE context, a trader anticipating a mild correction in Nifty from 22,000 might purchase a 22,000 put at Rs 180 and simultaneously write a 21,500 put at Rs 80, resulting in a net debit of Rs 100 per unit. With a lot size of 25, total capital deployed was Rs 2,500. The maximum profit — achieved if Nifty closed at or below 21,500 at expiry — was Rs 400 per unit (500 points spread minus Rs 100 debit). The break-even was 22,000 minus Rs 100, or 21,900.
Like all spread strategies, the bear put spread sacrificed unlimited profit potential in exchange for lower cost and defined risk. If Nifty fell sharply to 20,000, the naked put buyer would have captured far more profit than the spread holder, whose gains were capped at the lower strike. This trade-off made the strategy best suited to scenarios where the trader had a specific target zone in mind rather than an open-ended bearish thesis.
The bear put spread was particularly relevant around events such as RBI policy announcements, Union Budget presentations, or quarterly earnings seasons, when elevated implied volatility made naked put purchases expensive. By writing a lower-strike put, the trader effectively monetised some of the elevated volatility premium rather than paying it entirely as a directional cost. When implied volatility contracted after the event, both legs of the spread lost extrinsic value, but the written leg's time decay partially offset the long leg's decay, resulting in a more stable position than a naked long put during quiet periods.
From a risk management standpoint, traders on NSE were required to maintain SPAN plus exposure margins for the short put leg. Because the purchased put at the higher strike provided a theoretical hedge for the short put, brokers using portfolio-based margin methodologies typically extended spread margin benefits. Traders were advised to verify spread margin treatment with their broker before initiating the position, as margin systems varied in their recognition of complex option structures.