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Contract OI history

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Dec 18, 2026 EXPIRATION

TOST $50.00 Call

TOST261218C00050000

Latest saved OI1,629Oct 23, 2026
Last change-4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $50.00 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. 1,6558270 2026-10-02: 1,624 OI2026-10-05: 1,655 OI2026-10-06: 1,655 OI2026-10-07: 1,655 OI2026-10-08: 1,655 OI2026-10-09: 1,655 OI2026-10-13: 1,655 OI2026-10-14: 1,655 OI2026-10-15: 1,655 OI2026-10-16: 1,635 OI2026-10-21: 1,633 OI2026-10-23: 1,629 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, 20261,629-4
Oct 21, 2026Viewing1,633-2
Oct 16, 20261,635-20
Oct 15, 20261,6550
Oct 14, 20261,6550
Oct 13, 20261,6550
Oct 09, 20261,6550
Oct 08, 20261,6550
Oct 07, 20261,6550
Oct 06, 20261,6550
Oct 05, 20261,655+31
Oct 02, 20261,624No prior observation