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Contract OI history

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Nov 20, 2026 EXPIRATION

TOST $40.00 Call

TOST261120C00040000

Latest saved OI1,280Oct 23, 2026
Last change+23vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $40.00 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. 1,2806400 2026-10-02: 885 OI2026-10-05: 888 OI2026-10-06: 905 OI2026-10-07: 905 OI2026-10-08: 905 OI2026-10-09: 906 OI2026-10-13: 1,164 OI2026-10-14: 1,164 OI2026-10-15: 1,159 OI2026-10-16: 1,202 OI2026-10-21: 1,257 OI2026-10-23: 1,280 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, 20261,280+23
Oct 21, 2026Viewing1,257+55
Oct 16, 20261,202+43
Oct 15, 20261,159-5
Oct 14, 20261,1640
Oct 13, 20261,164+258
Oct 09, 2026906+1
Oct 08, 20269050
Oct 07, 20269050
Oct 06, 2026905+17
Oct 05, 2026888+3
Oct 02, 2026885No prior observation