Repligen Corporation (RGEN) Open Interest History
Open interest tracks the total number of outstanding options contracts. Rising OI alongside price moves can indicate growing commitment to the trend; declining OI suggests positions are being closed.
Snapshot as of May 8, 2026.
- Spot Price
- $124.30
- Call OI
- 3.8K
- Put OI
- 4.2K
- Total OI
- 8.0K
- Put/Call Ratio
- 0.30
As of May 8, 2026, Repligen Corporation (RGEN) has 8.0K total contracts outstanding across all expirations. Put/call OI ratio is 1.11 (balanced positioning). Open interest reflects accumulated positions from prior sessions; persistent growth indicates sustained directional or hedging interest, while sharp drops typically mean post-expiration clean-up.
Learn how open interest is reported and how to read the data →
Frequently asked RGEN open interest history questions
- What is the current RGEN options open interest?
- As of May 8, 2026, Repligen Corporation (RGEN) has 8.0K total contracts outstanding across all listed expirations, split as 3.8K calls and 4.2K puts. Open interest reflects accumulated positions from prior trading sessions; it does not include today's volume until end-of-day reconciliation.
- What is the RGEN put/call open interest ratio?
- Put/call OI ratio of 1.11 is balanced.
- What does RGEN open interest tell traders?
- Persistent OI growth indicates sustained directional or hedging interest; sharp drops typically mean post-expiration position cleanup. Heavy OI concentrations at specific strikes act as support and resistance levels because dealer hedging amplifies near those strikes - the gamma profile of the dealer book is concentrated there. Comparing today's volume to standing OI separates opening flow from closing flow.