INNOSPEC INC. (IOSP) Open Interest
INNOSPEC INC. (IOSP) has 6 call contracts and 6 put contracts open across all listed expirations — a put/call open interest ratio of 1.00. Open interest counts the contracts currently outstanding at each strike. This page shows where IOSP positioning concentrates, which strikes act as walls, and how the totals have trended over the past year.
Data as of Aug 25, 2026, 3:50 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.
IOSP Open Interest by Strike
| Total call open interest | 6 |
| Total put open interest | 6 |
| Put/call OI ratio | 1.00 |
| Call wall (largest call OI) | $85 |
| Put wall (largest put OI) | $90 |
IOSP Open Interest Trend
IOSP total call vs. put open interest, past year.
IOSP put/call open interest ratio, past year.
A put/call open interest ratio of 1.00 means calls and puts are outstanding in roughly typical proportions. In total, 6 call contracts and 6 put contracts are open across all listed expirations. The put/call OI ratio has risen from 0.01 in Feb '26 to 1.00 today.
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IOSP Options FAQ
What is IOSP's put/call ratio?
IOSP's put/call open interest ratio is 1.00 as of Aug 25, 2026, with 6 put contracts and 6 call contracts outstanding.
Which IOSP strikes have the highest open interest?
As of Aug 25, 2026, the largest call open interest sits at $85 (the call wall) and the largest put open interest sits at $90 (the put wall). Strikes with heavy open interest often act as reference levels because a lot of hedging activity is anchored to them.
Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.
Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.