OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

DRTS $20.00 Call

DRTS270521C00020000

Latest saved OI139Oct 21, 2026
Last change+104vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
DRTS $20.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-21. Exact values and changes are listed in the table below. 139690 2026-10-09: 29 OI2026-10-13: 29 OI2026-10-14: 29 OI2026-10-15: 29 OI2026-10-16: 35 OI2026-10-21: 139 OI Oct 09, 2026Oct 21, 2026

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

DRTS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing139+104
Oct 16, 202635+6
Oct 15, 2026290
Oct 14, 2026290
Oct 13, 2026290
Oct 09, 202629No prior observation