OITracker Cboe delayed data

Contract OI history

Back to TOST

Nov 20, 2026 EXPIRATION

TOST $20.00 Put

TOST261120P00020000

Latest saved OI4,947Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $20.00 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. 4,9472,4730 2026-10-02: 75 OI2026-10-05: 75 OI2026-10-06: 75 OI2026-10-07: 75 OI2026-10-08: 75 OI2026-10-09: 75 OI2026-10-13: 75 OI2026-10-14: 75 OI2026-10-15: 75 OI2026-10-16: 4,851 OI2026-10-21: 4,947 OI2026-10-23: 4,947 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, 2026Viewing4,9470
Oct 21, 20264,947+96
Oct 16, 20264,851+4,776
Oct 15, 2026750
Oct 14, 2026750
Oct 13, 2026750
Oct 09, 2026750
Oct 08, 2026750
Oct 07, 2026750
Oct 06, 2026750
Oct 05, 2026750
Oct 02, 202675No prior observation