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
- Dec 17, 2027
- Days to expiration
- 432
- Share price
- $173.88
- Put/call ratio (OI)
- 0.26
- Put/call ratio (volume)
- 0.28
- Expected move
- ±$103.32
- Open interest (C / P)
- 89 / 23
RGEN options summary
The RGEN options chain for the December 17, 2027 expiration lists 14 call and 3 put contracts, with 432 days until expiration. Open interest stands at 89 calls and 23 puts, a put/call ratio of 0.26, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $175.00 strike is 54.6%, which implies the market expects a move of about ±$103.32 (59.4%) in Repligen stock by expiration.
The most open interest sits at the $170.00 call (20 contracts) and the $120.00 put (20 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
RGEN options chain · December 17, 2027
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 75.00 | 0.00 | 0.00 | 2.60 | |||||
| — | — | — | 120.00 | 8.00 | 13.00 | 20.00 | |||||
| 49.83 | 70.00 | 74.50 | 130.00 | — | — | — | |||||
| 45.10 | 54.00 | 59.00 | 135.00 | — | — | — | |||||
| 42.10 | 48.50 | 53.50 | 145.00 | — | — | — | |||||
| 53.60 | 50.00 | 54.50 | 150.00 | — | — | — | |||||
| 58.00 | 0.00 | 0.00 | 155.00 | — | — | — | |||||
| 58.73 | 45.00 | 49.50 | 160.00 | — | — | — | |||||
| 50.20 | 40.00 | 44.50 | 170.00 | — | — | — | |||||
| 51.45 | 38.00 | 42.50 | 175.00 | — | — | — | |||||
| 48.58 | 36.00 | 40.50 | 180.00 | — | — | — | |||||
| 41.30 | 32.00 | 36.50 | 190.00 | 38.00 | 43.00 | 32.90 | |||||
| 31.54 | 17.00 | 21.50 | 240.00 | — | — | — | |||||
| 24.20 | 0.00 | 0.00 | 250.00 | — | — | — | |||||
| 18.00 | 13.00 | 17.50 | 260.00 | — | — | — | |||||
| 15.00 | 12.50 | 15.00 | 270.00 | — | — | — | |||||
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 December 17, 2027 expiration, the RGEN put/call ratio based on open interest is 0.26 (23 puts vs 89 calls), and 0.28 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 December 17, 2027 is about 54.6%, 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.