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Contract OI history

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Dec 18, 2026 EXPIRATION

TREX $55.00 Call

TREX261218C00055000

Latest saved OI959Oct 23, 2026
Last change+21vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TREX $55.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 9594790 2026-10-02: 344 OI2026-10-05: 344 OI2026-10-06: 344 OI2026-10-07: 344 OI2026-10-08: 344 OI2026-10-09: 922 OI2026-10-14: 922 OI2026-10-15: 922 OI2026-10-16: 925 OI2026-10-21: 938 OI2026-10-23: 959 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

TREX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026959+21
Oct 21, 2026Viewing938+13
Oct 16, 2026925+3
Oct 15, 20269220
Oct 14, 20269220
Oct 09, 2026922+578
Oct 08, 20263440
Oct 07, 20263440
Oct 06, 20263440
Oct 05, 20263440
Oct 02, 2026344No prior observation