Quantum tech, media deals, and a power systems turnaround see massive options volume today
By Steve Strazza
May 21, 2026
This note highlights a select group of stocks showing the most unusual — and highly directional — options activity.
The goal is simple: follow the big money and trade in the direction of the underlying trend.
Here is the list of Unusual Options activity from May 21:
*Click to enlarge view
Ballard Power Systems $BLDP — Ballard is turning a corner. Landing multi-year supply deals with Solaris, Wrightbus, and New Flyer through 2029.
Bullish flow came in with 10,000 contracts of the 6/18 $7 calls — the largest contract count today — betting this turnaround has more room.
Infleqtion $INFQ — Infleqtion builds neutral-atom quantum computers already in use by the DoD, NASA, and the UK government, and is integrating its technology into data centers alongside NVIDIA.
Traders sized up 2,038 contracts of the 7/17 $30 calls as the quantum computing theme starts heating up again.
Sirius XM Holdings $SIRI — SIRI has been quietly trending higher off record-low churn and a new deal to sell audio ad inventory across YouTube's U.S. platform.
A massive 13,000 contracts of the 9/18 $34 calls hit the tape at $1.2M in premium.
