OITracker Cboe delayed data

Contract OI history

Back to TOST

Oct 30, 2026 EXPIRATION

TOST $35.00 Call

TOST261030C00035000

Latest saved OI309Oct 23, 2026
Last change+57vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $35.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3091540 2026-10-02: 174 OI2026-10-05: 178 OI2026-10-06: 180 OI2026-10-07: 188 OI2026-10-08: 188 OI2026-10-09: 185 OI2026-10-13: 198 OI2026-10-14: 198 OI2026-10-15: 196 OI2026-10-16: 198 OI2026-10-21: 252 OI2026-10-23: 309 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, 2026Viewing309+57
Oct 21, 2026252+54
Oct 16, 2026198+2
Oct 15, 2026196-2
Oct 14, 20261980
Oct 13, 2026198+13
Oct 09, 2026185-3
Oct 08, 20261880
Oct 07, 2026188+8
Oct 06, 2026180+2
Oct 05, 2026178+4
Oct 02, 2026174No prior observation