OITracker Cboe delayed data

Contract OI history

Back to MKSI

Nov 20, 2026 EXPIRATION

MKSI $240.00 Put

MKSI261120P00240000

Latest saved OI619Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MKSI $240.00 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. 6193090 2026-10-09: 11 OI2026-10-13: 577 OI2026-10-14: 597 OI2026-10-15: 619 OI2026-10-16: 619 OI2026-10-21: 619 OI2026-10-23: 619 OI Oct 09, 2026Oct 23, 2026

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

MKSI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20266190
Oct 21, 2026Viewing6190
Oct 16, 20266190
Oct 15, 2026619+22
Oct 14, 2026597+20
Oct 13, 2026577+566
Oct 09, 202611No prior observation