OITracker Cboe delayed data

Contract OI history

Back to MKSI

Dec 18, 2026 EXPIRATION

MKSI $270.00 Put

MKSI261218P00270000

Latest saved OI363Oct 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 $270.00 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. 3631810 2026-10-09: 363 OI2026-10-13: 363 OI2026-10-14: 363 OI2026-10-15: 363 OI2026-10-16: 363 OI2026-10-21: 363 OI2026-10-23: 363 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, 2026Viewing3630
Oct 21, 20263630
Oct 16, 20263630
Oct 15, 20263630
Oct 14, 20263630
Oct 13, 20263630
Oct 09, 2026363No prior observation