Rs 680-720 Puts Draw Over 20,000 Contracts on HDFC Bank Ltd. Ahead of 29 Sep Expiry

Put Options Event and Cash Market Context

The most active put strikes for HDFC Bank Ltd. on 17 September were Rs 680, Rs 690, Rs 700, Rs 710, and Rs 720, with total contracts traded ranging from 2,647 at Rs 680 to 6,214 at Rs 710. The combined turnover for these strikes exceeded ₹1,044 crores, indicating significant options market activity. Open interest is also substantial, with the Rs 700 strike holding the highest at 15,518 contracts, followed closely by Rs 710 at 14,972 and Rs 720 at 13,278.

The underlying stock closed at Rs 715.85, down 0.88% on the day, and is trading approximately 4.9% above its 52-week low of Rs 681.90. The stock has recently fallen after four consecutive days of gains and currently trades above its 5-day and 20-day moving averages but remains below the 50-day, 100-day, and 200-day averages. Delivery volumes rose 9.71% on 16 September compared to the 5-day average, signalling increased investor participation despite the recent price dip.

The combination of heavy put activity and a modest decline in the stock price raises the question: is this put buying a sign of protective hedging or a directional bearish stance?

Strike Price Analysis: Moneyness and Intent

The Rs 680 and Rs 690 puts are out-of-the-money (OTM) relative to the current price, sitting roughly 5.1% and 3.5% below the underlying, respectively. The Rs 700 and Rs 710 strikes are near at-the-money (ATM), with Rs 700 about 2.1% below and Rs 710 just 0.8% below the current price. The Rs 720 strike is slightly in-the-money (ITM) by approximately 0.6%.

OTM puts are often purchased as insurance against a pullback, especially when the underlying is in a mild uptrend or consolidating. Conversely, ATM and ITM puts can indicate more directional bearish bets or part of spread strategies. The presence of significant contracts at both OTM and ATM strikes suggests a blend of hedging and speculative positioning.

Given the stock’s recent rally and current position above short-term moving averages, the Rs 680 and Rs 690 puts likely serve as downside protection for existing long positions. Meanwhile, the sizeable activity at Rs 700 and Rs 710 could reflect traders positioning for a potential near-term correction or adjusting existing option spreads.

Interpreting the Put Activity: Hedging, Bearishness, or Put Writing?

Put option activity can be ambiguous. Heavy put buying might signal bearish conviction, but it can also represent hedging or put writing (selling puts to collect premium). In this case, the stock’s recent four-day rally followed by a slight pullback, combined with put strikes clustered near and just below the current price, points towards a protective hedging motive.

Moreover, the large open interest at Rs 700 and Rs 710, coupled with high turnover, suggests fresh positioning rather than mere rollovers. The Rs 720 strike’s ITM puts could be part of spread strategies or protective puts bought earlier, now seeing increased activity as expiry approaches.

Put writing is less likely here given the high turnover and open interest at multiple strikes, which typically indicates active buying rather than premium collection. The stock’s position above the 5-day and 20-day moving averages supports the view that the put activity is more about guarding gains than anticipating a sharp decline — but could this protective stance shift if the stock breaks below key support levels?

Open Interest and Contracts: Fresh Positioning or Adjustments?

The ratio of contracts traded to open interest varies by strike. For example, the Rs 690 strike saw 3,973 contracts traded against an open interest of 10,123, a turnover-to-OI ratio of approximately 0.39. The Rs 710 strike had 6,214 contracts traded versus 14,972 open interest, a ratio of 0.41. These figures suggest a significant portion of the activity represents fresh trades rather than mere position unwinding.

High open interest at these strikes indicates that many traders have existing positions, which may be getting adjusted or rolled forward as expiry nears. The concentration of open interest near the current price also points to a focus on managing risk around the prevailing market level rather than outright bearish speculation.

Cash Market Momentum and Technical Context

HDFC Bank Ltd. has experienced a recent trend reversal after four days of gains, with the stock falling 0.88% on 17 September. It trades above its 5-day and 20-day moving averages but remains below longer-term averages such as the 50-day and 100-day, indicating a mixed technical picture. The Rs 680 to Rs 720 put strikes roughly correspond to support zones below the 50-day moving average, consistent with hedging against a pullback to these levels.

Delivery volumes increased by 9.71% on 16 September compared to the 5-day average, suggesting rising investor participation despite the recent price dip. However, the stock’s narrow trading range and underperformance relative to the sector (-0.41%) hint at some caution among market participants.

Conclusion: Protective Hedging Dominates Put Activity

The heavy put option activity on HDFC Bank Ltd. ahead of the 29 September expiry is best interpreted as a combination of protective hedging and tactical positioning rather than outright bearish conviction. The strike prices cluster around key support levels, and the stock’s recent price action supports a cautious stance among investors seeking to guard gains amid a mixed technical backdrop.

While some directional bearish bets cannot be ruled out, the data suggests that put buyers are primarily managing risk in a stock that remains above short-term moving averages but faces resistance at longer-term levels. The sizeable open interest and turnover ratios indicate fresh positioning, likely reflecting a desire to protect against a pullback rather than anticipate a sharp decline.

Given this context, should investors consider similar hedging strategies or view the current dip as a buying opportunity?

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