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Contract OI history

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Mar 19, 2027 EXPIRATION

TOST $35.00 Call

TOST270319C00035000

Latest saved OI365Oct 23, 2026
Last change+3vs 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. 3651820 2026-10-02: 304 OI2026-10-05: 300 OI2026-10-06: 296 OI2026-10-07: 291 OI2026-10-08: 291 OI2026-10-09: 291 OI2026-10-13: 289 OI2026-10-14: 289 OI2026-10-15: 289 OI2026-10-16: 289 OI2026-10-21: 362 OI2026-10-23: 365 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, 2026365+3
Oct 21, 2026Viewing362+73
Oct 16, 20262890
Oct 15, 20262890
Oct 14, 20262890
Oct 13, 2026289-2
Oct 09, 20262910
Oct 08, 20262910
Oct 07, 2026291-5
Oct 06, 2026296-4
Oct 05, 2026300-4
Oct 02, 2026304No prior observation