KLAC Unusual Option Activity
KLA Corporation (KLAC) option volume on Nov 4, 2026 was 17.6% of open interest, well above the 20-day average of 4.7%. Calls made up 29.3% of the volume. Relative to open interest, that was KLAC's most active day in 12 weeks.
KLAC 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 KLAC seeing unusual options activity?
On Nov 4, 2026, KLA options traded 73.79K contracts against 419.16K open, a volume to open interest ratio of 0.18, well above its 20-day average. The table above lists the contracts with the highest ratios.
Are KLAC traders trading more calls or puts?
Calls made up 29.3% of KLA option volume on Nov 4, 2026, a put/call ratio of 2.41, so puts outnumber calls. The KLAC option volume chart shows calls and puts by strike.
What is KLA Corporation?
KLA is one of the largest semiconductor wafer fabrication equipment, or WFE, manufacturers in the world.