Sensex 0DTE, 09-07: The Tent and the Tail
The mechanics of this structure are written up in Nifty 0DTE Expiry Execution: Managing Volatility With Hedged Ratio Straddles. This is the first Sensex application of it, and the first of four in this series.
Taken 09-07-2026 — the day after the 08-07 shock that took ₹7,000 out of my short-premium book in a single afternoon. Premium was still fat. That matters, and I will come back to why it flatters the result.
Profit: ₹5,501.
The structure
One lot long on each side of the ATM, three lots short on each wing. Same-day expiry.
| Leg | Strike | Action | Lots | Price |
|---|---|---|---|---|
| Call | 77,000 CE | Buy | 1 | 186.40 |
| Put | 77,000 PE | Buy | 1 | 206.65 |
| Put | 76,500 PE | Sell | 3 | 54.80 |
| Call | 77,400 CE | Sell | 3 | 56.42 |
- Debit paid: 186.40 + 206.65 = 393.05
- Credit received: 3 × (54.80 + 56.42) = 333.66
- Net debit: 59.39 points → ₹1,187.80 (lot size 20)
That ₹1,188 is the entire cash outlay, and it is also the entire loss if the index does nothing at all. If Sensex settles exactly on 77,000, every option in the structure expires worthless and I am out the debit. Nothing else in the position can hurt me between the two short strikes.
What the payoff actually looks like
It is a tent, and it is worth being precise about its shape because the shape is the whole trade.
| Settlement | Result |
|---|---|
| 76,279.70 | breakeven (lower) |
| 76,500 (short put strike) | peak: +440.61 pts → ₹8,812 |
| 76,940.61 | breakeven |
| 77,000 (long strikes) | worst case inside the tent: −59.39 pts → −₹1,188 |
| 77,059.39 | breakeven |
| 77,400 (short call strike) | peak: +340.61 pts → ₹6,812 |
| 77,570.30 | breakeven (upper) |
Between roughly 76,280 and 77,570 the structure makes money, with a dip to −₹1,188 in a 120-point notch around 77,000. That is a 1,290-point profit band on an index trading near 77,000 — about 1.7% of the underlying, on expiry day, which is a lot of room.
The trade is long the move and short the extreme. It wants the index to travel a few hundred points and stop.
And here is the tail. Past 77,570 on the upside or 76,280 on the downside, I am net short two lots — three sold against one bought — and the loss accrues at twice the rate the index moves. There is no wing beyond the wing. A 500-point overshoot past the upper breakeven is 1,000 points of loss, ₹20,000, on a structure that risked ₹1,188 of cash.
Three shorts against one long is not a hedge. It is a hedge for the first leg and a naked position for the other two.
The result
Closed for ₹5,501 — 275.05 points on a lot of 20.
Working backwards through the tent, ₹5,501 corresponds to the index sitting about 334 points from the 77,000 pivot at the point I came off. Either direction gives the same number; the payoff is linear at slope 1 between the long strike and each short strike, so 77,334 and 76,666 pay identically.
That is 81% of the call-side peak and 62% of the put-side peak. In other words the day gave me most of the available move on one side and I took it.
Why I am not impressed with myself
The 9th was the session after the worst day of my journal so far. Two things follow from that, and both of them helped me for reasons that have nothing to do with skill.
Premium was inflated. I paid 393.05 for the ATM straddle and collected 333.66 for three strangles. In a calm week those numbers are far smaller and so is the tent. Selling three of something into a panic bid is a good deal precisely because the panic bid exists.
Realised range was inflated too. A 334-point move in Sensex is 0.43% of the index. On a quiet expiry day I do not get that. The structure needs movement to pay, and the day after a shock is when movement is cheapest to buy and most likely to arrive.
So: right structure, right day, and the right day was handed to me by Trump's mouth on the 8th. I do not get to schedule that.
The thing I have not tested
Every number above assumes I get to choose when to come off. The tent is generous, the notch at the pivot is small, and the cash at risk is ₹1,188 — all of which makes this look like a low-risk trade. It is not a low-risk trade. It is a low-cost trade with an uncapped tail, and those are different things.
Two specific gaps, written down now so I cannot pretend later that I did not see them:
- There is no rule for what happens if the index runs past a breakeven. Beyond 77,570 the position loses at 2×, on expiry day, when gamma on the shorts is at its most violent. I do not currently have a written exit for that scenario. On 08-07 — one session before this trade — I demonstrated in public that I cannot improvise an exit under stress.
- Margin is not the debit. Four short lots against two long ones carries real SPAN margin all day. The ₹1,188 is what the structure costs, not what it blocks. Judging the trade's return on the debit alone is flattering arithmetic and I should be measuring against capital deployed.
Where the series stands
| Trade | Result |
|---|---|
| Sensex 0DTE (09-07) | +₹5,501 |
| Series total | +₹5,501 |
One trade, one win, no information. The first 0DTE trade in the journal is written up separately and sits outside this count.
Disclaimer
This is a personal trading journal. It is a record of my own trades, my own money and my own mistakes — nothing more.
Nothing here is a trade recommendation, a tip, a call, or advice of any kind. I am not a registered adviser and I am not qualified to tell anyone what to do with their capital. The strikes, premiums, entries and exits above are what I did, not what you should do.
If you read this blog and place a trade because of it, that trade is yours. I accept no responsibility for anyone else's losses. Do your own research, size for your own risk, and understand that options can lose you more, faster, than you expect.