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Contract OI history

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Nov 20, 2026 EXPIRATION

NTRA $340.00 Put

NTRA261120P00340000

Latest saved OI311Oct 23, 2026
Last change+9vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
NTRA $340.00 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. 3111550 2026-10-09: 142 OI2026-10-13: 142 OI2026-10-14: 144 OI2026-10-15: 145 OI2026-10-16: 146 OI2026-10-21: 302 OI2026-10-23: 311 OI Oct 09, 2026Oct 23, 2026

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

NTRA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026311+9
Oct 21, 2026Viewing302+156
Oct 16, 2026146+1
Oct 15, 2026145+1
Oct 14, 2026144+2
Oct 13, 20261420
Oct 09, 2026142No prior observation