BLK Unusual Option Activity
Blackrock Inc (BLK) option volume on Nov 4, 2026 was 10.7% of open interest, well above the 20-day average of 5.7%. Calls made up 61.1% of the volume.
BLK 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 BLK seeing unusual options activity?
On Nov 4, 2026, Blackrock options traded 4.9K contracts against 45.78K open, a volume to open interest ratio of 0.11, well above its 20-day average. The table above lists the contracts with the highest ratios.
Are BLK traders trading more calls or puts?
Calls made up 61.1% of Blackrock option volume on Nov 4, 2026, a put/call ratio of 0.64, so calls outnumber puts. The BLK option volume chart shows calls and puts by strike.
What is Blackrock Inc?
BlackRock is the largest asset manager in the world, with $15.345 trillion in assets under management at the end of June 2026.