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Contract OI history

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May 21, 2027 EXPIRATION

TOST $43.00 Call

TOST270521C00043000

Latest saved OI411Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $43.00 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. 4112050 2026-10-02: 0 OI2026-10-05: 1 OI2026-10-06: 201 OI2026-10-07: 201 OI2026-10-08: 201 OI2026-10-09: 202 OI2026-10-13: 202 OI2026-10-14: 202 OI2026-10-15: 202 OI2026-10-16: 302 OI2026-10-21: 402 OI2026-10-23: 411 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, 2026Viewing411+9
Oct 21, 2026402+100
Oct 16, 2026302+100
Oct 15, 20262020
Oct 14, 20262020
Oct 13, 20262020
Oct 09, 2026202+1
Oct 08, 20262010
Oct 07, 20262010
Oct 06, 2026201+200
Oct 05, 20261+1
Oct 02, 20260No prior observation