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Contract OI history

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Sep 17, 2027 EXPIRATION

NTAP $220.00 Put

NTAP270917P00220000

Latest saved OI371Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
NTAP $220.00 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. 3711850 2026-10-09: 368 OI2026-10-13: 369 OI2026-10-14: 369 OI2026-10-15: 369 OI2026-10-16: 369 OI2026-10-21: 369 OI2026-10-23: 371 OI Oct 09, 2026Oct 23, 2026

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

NTAP contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing371+2
Oct 21, 20263690
Oct 16, 20263690
Oct 15, 20263690
Oct 14, 20263690
Oct 13, 2026369+1
Oct 09, 2026368No prior observation