OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 15, 2027 EXPIRATION

TOST $31.00 Call

TOST270115C00031000

Latest saved OI890Oct 23, 2026
Last change+604vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $31.00 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. 8904450 2026-10-02: 244 OI2026-10-05: 244 OI2026-10-06: 244 OI2026-10-07: 260 OI2026-10-08: 260 OI2026-10-09: 272 OI2026-10-13: 276 OI2026-10-14: 276 OI2026-10-15: 279 OI2026-10-16: 285 OI2026-10-21: 286 OI2026-10-23: 890 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, 2026890+604
Oct 21, 2026Viewing286+1
Oct 16, 2026285+6
Oct 15, 2026279+3
Oct 14, 20262760
Oct 13, 2026276+4
Oct 09, 2026272+12
Oct 08, 20262600
Oct 07, 2026260+16
Oct 06, 20262440
Oct 05, 20262440
Oct 02, 2026244No prior observation