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Contract OI history

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Jan 15, 2027 EXPIRATION

ARMK $50.00 Put

ARMK270115P00050000

Latest saved OI313Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ARMK $50.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3131560 2026-10-02: 72 OI2026-10-05: 230 OI2026-10-06: 230 OI2026-10-07: 230 OI2026-10-08: 230 OI2026-10-09: 230 OI2026-10-13: 253 OI2026-10-14: 253 OI2026-10-15: 253 OI2026-10-16: 253 OI2026-10-21: 313 OI2026-10-23: 313 OI Oct 02, 2026Oct 23, 2026

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

ARMK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3130
Oct 21, 2026313+60
Oct 16, 20262530
Oct 15, 20262530
Oct 14, 20262530
Oct 13, 2026253+23
Oct 09, 20262300
Oct 08, 20262300
Oct 07, 20262300
Oct 06, 20262300
Oct 05, 2026230+158
Oct 02, 202672No prior observation