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Contract OI history

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Dec 18, 2026 EXPIRATION

ONON $27.50 Call

ONON261218C00027500

Latest saved OI527Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ONON $27.50 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. 7423710 2026-10-02: 599 OI2026-10-05: 742 OI2026-10-06: 547 OI2026-10-07: 546 OI2026-10-08: 546 OI2026-10-09: 544 OI2026-10-13: 541 OI2026-10-14: 541 OI2026-10-15: 540 OI2026-10-16: 540 OI2026-10-21: 527 OI2026-10-23: 527 OI Oct 02, 2026Oct 23, 2026

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

ONON contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5270
Oct 21, 2026527-13
Oct 16, 20265400
Oct 15, 2026540-1
Oct 14, 20265410
Oct 13, 2026541-3
Oct 09, 2026544-2
Oct 08, 20265460
Oct 07, 2026546-1
Oct 06, 2026547-195
Oct 05, 2026742+143
Oct 02, 2026599No prior observation