Repligen (RGEN) Options Chain
NASDAQ: RGENHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- May 21, 2027
- Days to expiration
- 223
- Share price
- $173.88
- Put/call ratio (OI)
- 0.23
- Put/call ratio (volume)
- 0.17
- Expected move
- ±$71.65
- Open interest (C / P)
- 13 / 3
RGEN options summary
The RGEN options chain for the May 21, 2027 expiration lists 2 call and 3 put contracts, with 223 days until expiration. Open interest stands at 13 calls and 3 puts, a put/call ratio of 0.23, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $130.00 strike is 52.7%, which implies the market expects a move of about ±$71.65 (41.2%) in Repligen stock by expiration.
The most open interest sits at the $250.00 call (12 contracts) and the $110.00 put (1 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
RGEN options chain · May 21, 2027
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 110.00 | 1.00 | 4.70 | 2.65 | |||||
| 78.50 | 60.50 | 63.80 | 120.00 | 2.50 | 6.00 | 4.07 | |||||
| — | — | — | 130.00 | 4.80 | 8.70 | 5.61 | |||||
| 10.10 | 5.70 | 9.80 | 250.00 | — | — | — | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the RGEN put/call ratio?
For the May 21, 2027 expiration, the RGEN put/call ratio based on open interest is 0.23 (3 puts vs 13 calls), and 0.17 based on today's volume. A ratio above 1 means more puts than calls.
What is RGEN's implied volatility?
At-the-money implied volatility for RGEN options expiring May 21, 2027 is about 52.7%, an annualized estimate of how much the market expects Repligen stock to move.
How many RGEN option expiration dates are there?
RGEN has 7 listed expiration dates, from Oct 16, 2026 to Dec 17, 2027.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.