# Open interest in SPY puts expiring Oct 21 (2 weeks out) rose 8,132 at the Oct 8 settlement

As of the Oct 8, 2026 settlement: Open interest in SPY puts expiring Oct 21 (2 weeks out) rose 8,132 at the Oct 8 settlement. 1,742 to 9,874 contracts between the Oct 7 and Oct 8 settlements, 467% of the prior figure. Source: Cboe settlement open interest archive.

- Session: 2026-10-08
- Kind: Open interest change
- Status: Settled
- Expiry: 2026-10-21 (1 to 3 weeks)
- Rule: |change| >= 10000 or (>= 2000 and >= 50% of prior), and |change share| >= 2.0 x bucket median; prior OI >= 1000
- Baseline: median absolute open interest change share, contracts 1 to 3 weeks out, last 20 sessions, n = 19, value 0.344

| Metric | Value |
|---|---:|
| changeShare | 4.6682 |
| daysToExpiry | 13 |
| openInterest | 9874 |
| openInterestChange | 8132 |
| priorOpenInterest | 1742 |
| priorSettlement | 2026-10-07 |
| settlement | 2026-10-08 |

## What happened next

This snapshot is itself a settlement figure.

Caveat: Open interest change, not trades; it does not say which side opened or closed.

Session page: https://squawkflow.com/options-flow/2026-10-08

## Citation

Source: SquawkFlow, https://squawkflow.com/options-flow/2026-10-08/spy-puts-oct-21-2026-open-interest-change
Retrieved: 2026-10-11 16:44 ET
Attribution: cite the page URL rather than a copied number. Levels are
recomputed every session, so a number without its date is wrong within a day.

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