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Contract OI history

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Dec 18, 2026 EXPIRATION

TOST $34.00 Call

TOST261218C00034000

Latest saved OI498Oct 23, 2026
Last change+8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $34.00 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. 4982490 2026-10-02: 271 OI2026-10-05: 388 OI2026-10-06: 392 OI2026-10-07: 389 OI2026-10-08: 389 OI2026-10-09: 388 OI2026-10-13: 385 OI2026-10-14: 385 OI2026-10-15: 465 OI2026-10-16: 463 OI2026-10-21: 490 OI2026-10-23: 498 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, 2026498+8
Oct 21, 2026Viewing490+27
Oct 16, 2026463-2
Oct 15, 2026465+80
Oct 14, 20263850
Oct 13, 2026385-3
Oct 09, 2026388-1
Oct 08, 20263890
Oct 07, 2026389-3
Oct 06, 2026392+4
Oct 05, 2026388+117
Oct 02, 2026271No prior observation