MKSI Unusual Option Activity
MKS Inc (MKSI) option volume on Nov 4, 2026 was 17.3% of open interest, well above the 20-day average of 4.7%. Calls made up 24.1% of the volume. Relative to open interest, that was MKSI's most active day in 12 weeks.
MKSI Unusual Options FAQ
What makes option activity unusual?
Option activity is usually called unusual when a contract trades much more volume than its open interest, which can mean traders are opening new positions.
Is MKSI seeing unusual options activity?
On Nov 4, 2026, MKS options traded 3.06K contracts against 17.7K open, a volume to open interest ratio of 0.17, well above its 20-day average. The table above lists the contracts with the highest ratios.
Are MKSI traders trading more calls or puts?
Calls made up 24.1% of MKS option volume on Nov 4, 2026, a put/call ratio of 3.15, so puts outnumber calls. The MKSI option volume chart shows calls and puts by strike.
What is MKS Inc?
MKS Inc delivers foundational technology solutions for leading edge semiconductor manufacturing, electronics and packaging, and specialty industrial applications.