Introductory Context
"The strike-expiry combination fully determines the hedge's cost and the protection profile. Changing either variable produces a meaningfully different hedge: a monthly ATM put is completely different from a quarterly 10 percent OTM put in terms of cost, protection timing, and the investor experience during a market decline. The selection framework presented here evaluates each combination across four dimensions: protection activation level, time window, total cost, and the hedge's behaviour during typical market stress scenarios. "
Strike Selection - The Protection Activation Level
ATM put (strike at current Nifty level): activates from the first point of decline. Maximum protection, maximum cost. Best for: investors who genuinely cannot afford any significant decline (near-retirement, critical cash need within 3 months). The ATM put is 'full insurance' -- it begins paying out from the first point below the strike.
5 percent OTM put (strike 5 percent below current Nifty): the first 5 percent of decline is unhedged. Protection only activates below the 5 percent threshold. Cost: approximately 40 to 50 percent less than ATM. Best for: investors who can absorb a 5 to 7 percent portfolio decline but want protection from larger falls. This is the most commonly used hedge structure for long-term investors -- accepting the 'normal correction' range unhedged while protecting against 'major decline' territory.
10 percent OTM put: first 10 percent of decline unhedged. Protection against severe bear markets and crashes only. Cost: approximately 60 to 70 percent less than ATM. Best for: investors with long time horizons (10+ years) who want protection only against catastrophic scenarios. Annual cost: typically 0.5 to 1 percent of portfolio value -- minimal drag on returns.
15 to 20 percent OTM put (deep OTM, 'black swan' protection): activates only in severe crashes (2008-style, COVID-style events). Very cheap (0.1 to 0.3 percent of portfolio per year). Best for: long-term investors who primarily want protection against permanent impairment of capital from extreme events, not from normal bear markets. This is the 'tail risk hedge' structure covered in Topic 19.7.
Expiry Selection - The Protection Window
Weekly puts (5 sessions): very cheap but provide protection for only one week. Rolling weekly is very operationally intensive (52 rolls per year) and expensive in aggregate (each short roll captures minimal theta benefit for the portfolio). Not practical for portfolio hedging. Use only for very specific known risk events (Budget day protection, election results protection) where a one-week window matches the specific event timing.
Monthly puts (last-Tuesday expiry, approximately 20 sessions): moderate cost, more frequent rolling (12 per year). Suitable for investors who actively manage their portfolios and want to adjust the hedge level monthly based on market conditions. The monthly hedge allows tactical adjustments: move strikes higher when markets rise (protecting at the new higher level) or roll down when markets fall (locking in some of the portfolio's decline as protected gains).
Quarterly puts (3-month expiry, last-Tuesday of the quarter): the most commonly used expiry for systematic portfolio hedging. Four rolls per year -- manageable for most investors. The longer window provides more time value compression between entries -- the hedge is cheaper per day of protection than monthly puts. The quarterly structure also captures the typical 2 to 3-month bear market cycle that most major corrections involve.
Annual puts (longest available expiry, typically 3 months for Nifty since longer series are not routinely available): for Nifty options, the maximum available expiry is typically 3 months. Unlike US markets where LEAPS (1 to 2 year options) are available, Indian Nifty options are limited to approximately 3 monthly series. This constrains the Indian portfolio hedger to quarterly maximum protection windows.
Strike vs Expiry Cost Matrix for Rs 50 Lakh Portfolio (Nifty 23,500, 2 lots)
ATM put, monthly: Rs 135/unit x 75 x 2 = Rs 20,250/month = Rs 2,43,000/year (4.86% p.a.). ATM put, quarterly: Rs 230/unit x 75 x 2 = Rs 34,500/quarter = Rs 1,38,000/year (2.76% p.a.). 5% OTM put, monthly: Rs 65/unit x 75 x 2 = Rs 9,750/month = Rs 1,17,000/year (2.34% p.a.). 5% OTM put, quarterly: Rs 115/unit x 75 x 2 = Rs 17,250/quarter = Rs 69,000/year (1.38% p.a.). 10% OTM put, quarterly: Rs 55/unit x 75 x 2 = Rs 8,250/quarter = Rs 33,000/year (0.66% p.a.). Black swan (15% OTM), quarterly: Rs 22/unit x 75 x 2 = Rs 3,300/quarter = Rs 13,200/year (0.26% p.a.).
The Optimal Hedge for Different Investor Types
Accumulation-phase investors (25 to 50 years, long time horizon, no portfolio withdrawals): 10 percent OTM quarterly puts at 0.66 percent annual cost. Protects against severe bear markets and crashes while minimising the drag on long-term compounding. Catastrophic losses (40 to 50 percent declines) are protected; normal corrections (10 to 15 percent) are absorbed.
Pre-retirement or retirement-income investors (50 to 65 years, withdrawals beginning soon or already started): 5 percent OTM quarterly puts at 1.38 percent annual cost. More protection against medium-sized declines that would threaten withdrawal sustainability. The 5 percent deductible means the first 5 percent of portfolio decline is absorbed before the hedge activates.
Specific-purpose investors (house down payment, education fees, business investment within 12 to 24 months): ATM or 5 percent OTM monthly puts at 2.34 to 4.86 percent annual cost. The higher cost is justified by the specific, near-term cash requirement that cannot tolerate a significant portfolio decline in the identified window. The monthly expiry allows adjustment if the specific requirement date shifts.
The protective put strategy is not a single product -- it is a spectrum from minimal tail-risk insurance (deep OTM, very cheap) to comprehensive immediate protection (ATM, significant cost). The optimal point on this spectrum is determined by the investor's specific financial circumstances, not by any universal 'best practice.' The same Rs 50 lakh portfolio requires completely different hedge structures for a 30-year-old accumulator and a 63-year-old pre-retiree depending solely on their vulnerability to portfolio drawdowns.