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Contract OI history

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May 21, 2027 EXPIRATION

ETON $55.00 Put

ETON270521P00055000

Latest saved OI172Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ETON $55.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 172860 2026-10-09: 172 OI2026-10-13: 172 OI2026-10-14: 172 OI2026-10-16: 172 OI2026-10-20: 172 OI2026-10-23: 172 OI Oct 09, 2026Oct 23, 2026

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

ETON contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1720
Oct 20, 20261720
Oct 16, 20261720
Oct 14, 20261720
Oct 13, 20261720
Oct 09, 2026172No prior observation