Max Pain Strike and Open Interest Concentration
SPY max pain for the 23 Oct 2026 zero-day expiry stands at 766.00 because that strike holds the peak combined open interest value of 130945564. Current price at 761.09 sits 4.91 below max pain which means the pin force pulls price toward 766.00 into close. The 0.65 percent gap concentrates the largest option market value exactly at 766.00 on the strike chart which means any close must minimise total payout at that level.
Price Gap to Pin Level
SPY trades 4.91 points under the 766.00 strike on zero-day expiry which means positive gamma above spot tightens the range as settlement approaches. Secondary support appears near 750.00 because that level marks the next visible open interest cluster on the same chart. The 130945564 peak at 766.00 exceeds surrounding strikes by a wide margin which means the dominant payout minimum sits well above spot.
Zero-Day Expiry Mechanics
Gamma exposure and dealer positioning wall data stay unavailable in this slice. The single-day expiry leaves only the max pain level as the measurable anchor because no further time decay remains after the close. Spot at 761.09 versus 766.00 therefore sets the exact distance the contract must cover to reach the minimum payout strike.
| Expiry | Max Pain | Gap to Spot | Implication |
|---|---|---|---|
| 23 Oct 2026 (0D) | 766.00 | +4.91 | Primary pin holds because open interest peaks at 130945564 |
| 26 Oct 2026 (3D) | 766.00 | +4.91 | Secondary magnet stays aligned if front week rolls unchanged |
Scenario Probabilities
45 percent odds favour a close at 766.00 because the max pain strike dominates on expiry. 30 percent odds point to a close above 766.00 because any overshoot would still leave open interest concentrated nearby. 25 percent odds point to a close below 766.00 because the current 4.91 point gap allows limited downside follow-through before the pin reasserts.
Risk and Observation Levels
Risk stands at 25 percent because the 0.65 percent gap to max pain can widen if intraday moves exceed the zero-day pinning window.
| Level | Focus |
|---|---|
| Beginner | Track how the 4.91 point gap narrows into the close on the strike chart |
| Intermediate | Compare open interest bars at 766.00 versus 750.00 to gauge pin strength |
| Advanced | Monitor whether the 130945564 peak shifts on any late print before settlement |
SPY faces a 4.91 point upward pin to 766.00 on expiry from the max pain strike.
This is analysis, not financial advice. Always manage your risk.
