# Open interest in TLT calls expiring Dec 18 rose 99,733 at the Oct 20 settlement

As of the Oct 20, 2026 settlement: Open interest in TLT calls expiring Dec 18 rose 99,733 at the Oct 20 settlement.
On the page at https://squawkflow.com/options-flow/2026-10-20/tlt-calls-dec-18-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other TLT snapshots from Oct 20, 2026.

1,152,654 to 1,252,387 contracts between the Oct 19 and Oct 20 settlements, 9% of the prior figure. Source: Cboe settlement open interest archive.

- Session: 2026-10-20
- Kind: Open interest change
- Status: Settled
- Expiry: 2026-12-18 (1 to 3 months)
- 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 months out, last 20 sessions, n = 20, value 0.0307

| Metric | Value |
|---|---:|
| changeShare | 0.0865 |
| daysToExpiry | 59 |
| openInterest | 1252387 |
| openInterestChange | 99733 |
| priorOpenInterest | 1152654 |
| priorSettlement | 2026-10-19 |
| settlement | 2026-10-20 |

## 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/2026-10-20

## Citation

Source: SquawkFlow, https://squawkflow.com/options-flow/2026-10-20/tlt-calls-dec-18-2026-open-interest-change
Retrieved: 2026-10-21 10:12 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.

SquawkFlow publishes market-structure data and education. Nothing here is
investment advice, a price target or a recommendation, and we have no order
execution.