OITracker Cboe delayed data

Contract OI history

Back to CME

Mar 19, 2027 EXPIRATION

CME $300.00 Put

CME270319P00300000

Latest saved OI438Oct 23, 2026
Last change+50vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CME $300.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4382190 2026-10-09: 144 OI2026-10-13: 278 OI2026-10-14: 281 OI2026-10-15: 276 OI2026-10-16: 279 OI2026-10-21: 388 OI2026-10-23: 438 OI Oct 09, 2026Oct 23, 2026

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

CME contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing438+50
Oct 21, 2026388+109
Oct 16, 2026279+3
Oct 15, 2026276-5
Oct 14, 2026281+3
Oct 13, 2026278+134
Oct 09, 2026144No prior observation