Monthly 16-delta strangle
This positional strategy sells a NIFTY monthly strangle about 45 calendar days before expiry, with both strikes at roughly 16 delta, about one standard deviation away. It follows a well-known set of management rules: take profit at half the premium, close by 21 days to expiry, stop at a loss of twice the credit, and roll the untested side once if a short strike comes under pressure.How it trades
Results
PRE-BUILT · DEFAULTSWhere it made and lost money
With 13 trades, no condition in the evidence has the eight trades needed to judge it, but the pattern fits a short strangle with put skew. The five trades held while NIFTY rose more than 1% all won, making ₹32,968 before costs: the call side had room and both legs kept decaying. The six held while NIFTY fell more than 1% lost ₹35,640 overall, including both stopped trades, because a falling index pushes the short put's delta and price up quickly and volatility usually rises at the same time. Entries made when the market was below its 20-day average all won, adding ₹38,938 over seven trades.
About this strategy
- On the first trading day a NIFTY monthly expiry is 42 to 48 calendar days away, at 15:00, check that yesterday's India VIX close is below 35.
- Sell one lot each of the call and put closest to 0.16 delta in that monthly expiry; only one strangle is open at a time.
- Every five minutes, if either short's delta reaches 0.35, buy back the other (untested) short and re-sell that side nearer, at about 0.30 delta, at most once per trade.
- Take profit once the position has earned 50% of the entry credit.
- Stop out if the loss reaches twice the entry credit.
- Otherwise close at 15:00 on the last trading day with at least 21 days to expiry; the next month's window starts the next trade.
Why traders use it
Selling about 45 days out collects a meaningful premium while the options are still far from the steep gamma of the final weeks. Sixteen-delta strikes give the index a wide range to move in, and taking profit at half the credit or closing at 21 days cuts the holding period short before risk rises sharply. The rules were developed through large studies of index options abroad and are widely followed by systematic option sellers who prefer a mechanical playbook to discretion.
The year in plain words
From 1 Oct 2025 to 30 Sep 2026 on NIFTY the strategy traded 13 strangles and won 11 (85%), making only ₹8,298 before costs, a profit factor of 1.15. Nine trades hit the 50% target, two were closed by the days-to-expiry rule and two hit the stop. Those losses, closed in February and early March 2026, cost ₹21,879 and ₹33,407, four to six times the average win of about ₹5,780, and created a ₹55,286 drawdown. After ₹20 per order and bid-ask slippage the result was higher, ₹14,557: with slippage priced in, the March stop fired two days earlier and lost about ₹22,300 instead. Small, fragile edge.
What the settings do
Risks
- Both legs are naked, so a sharp fall or gap can cost several months of gains, as each of the two stopped trades did.
- The roll adds a closer short on the untested side, which can be hit if the market reverses.
- Liquidity in NIFTY monthly options 45 days out is thinner than in nearer expiries, so live fills may be wider.
- The trade is held for two to three weeks, with full exposure to overnight gaps.
Who it suits
Positional option sellers with full margin for a naked monthly strangle, who prefer a fixed management plan and can accept occasional losses several times the size of a typical win.
Questions traders ask
What is the 45 DTE 16 delta strangle?
It is a short strangle sold about 45 days before expiry, with the call and put both near 0.16 delta, roughly one standard deviation away. It is usually managed by taking profit at 50% of the credit and closing at 21 days to expiry.
Is the 16-delta monthly strangle profitable on NIFTY?
In this backtest from 1 Oct 2025 to 30 Sep 2026 it made ₹8,298 before costs and ₹14,557 after ₹20 per order and bid-ask slippage, winning 11 of 13 trades. The after-costs figure is higher only because one stop fired earlier when slippage was included. Two losses of ₹21,879 and ₹33,407 show the risk. Statutory charges are excluded, and past results do not guarantee future ones.
Why close at 21 days to expiry?
In the last three weeks gamma rises quickly, so the same move in NIFTY changes the strangle's value much more. Closing at 21 days gives up the remaining premium in exchange for avoiding that period of sharper risk.
What does rolling the untested side mean?
If the market moves towards one short strike, the other side has lost most of its value. Buying it back and selling a new option closer to the market collects extra premium and partly offsets the losing side.