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Contract OI history

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Nov 20, 2026 EXPIRATION

TOST $34.00 Call

TOST261120C00034000

Latest saved OI1,440Oct 23, 2026
Last change+727vs 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. 1,4407200 2026-10-02: 290 OI2026-10-05: 483 OI2026-10-06: 488 OI2026-10-07: 500 OI2026-10-08: 500 OI2026-10-09: 563 OI2026-10-13: 566 OI2026-10-14: 566 OI2026-10-15: 581 OI2026-10-16: 625 OI2026-10-21: 713 OI2026-10-23: 1,440 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, 2026Viewing1,440+727
Oct 21, 2026713+88
Oct 16, 2026625+44
Oct 15, 2026581+15
Oct 14, 20265660
Oct 13, 2026566+3
Oct 09, 2026563+63
Oct 08, 20265000
Oct 07, 2026500+12
Oct 06, 2026488+5
Oct 05, 2026483+193
Oct 02, 2026290No prior observation