OITracker Cboe delayed data

Contract OI history

Back to TOST

Nov 20, 2026 EXPIRATION

TOST $30.00 Put

TOST261120P00030000

Latest saved OI466Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $30.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4672330 2026-10-02: 240 OI2026-10-05: 240 OI2026-10-06: 249 OI2026-10-07: 346 OI2026-10-08: 346 OI2026-10-09: 359 OI2026-10-13: 362 OI2026-10-14: 362 OI2026-10-15: 378 OI2026-10-16: 380 OI2026-10-21: 467 OI2026-10-23: 466 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

TOST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing466-1
Oct 21, 2026467+87
Oct 16, 2026380+2
Oct 15, 2026378+16
Oct 14, 20263620
Oct 13, 2026362+3
Oct 09, 2026359+13
Oct 08, 20263460
Oct 07, 2026346+97
Oct 06, 2026249+9
Oct 05, 20262400
Oct 02, 2026240No prior observation