Geron (GERN) Options Chain
NASDAQ: GERNHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Jan 21, 2028
- Days to expiration
- 468
- Share price
- $1.23
- Put/call ratio (OI)
- 1.17
- Put/call ratio (volume)
- 0.54
- ATM implied volatility
- 113.5%
- Expected move
- ±$1.57
- Open interest (C / P)
- 112 / 131
GERN options summary
The GERN options chain for the January 21, 2028 expiration lists 6 call and 2 put contracts, with 468 days until expiration. Open interest stands at 112 calls and 131 puts, a put/call ratio of 1.17, which is fairly balanced between calls and puts. At-the-money implied volatility near the $1.00 strike is 113.5%, which implies the market expects a move of about ±$1.57 (128.5%) in Geron stock by expiration.
The most open interest sits at the $1.00 call (64 contracts) and the $1.00 put (130 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GERN options chain · January 21, 2028
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.73 | — | — | 0.50 | 0.00 | 0.70 | 0.10 | |||||
| 0.65 | 0.45 | 1.00 | 1.00 | 0.05 | 0.65 | 0.32 | |||||
| 0.50 | 0.05 | 0.95 | 1.50 | — | — | — | |||||
| 0.67 | 0.25 | 1.00 | 2.00 | — | — | — | |||||
| 0.35 | — | — | 3.00 | — | — | — | |||||
| 0.30 | 0.00 | 1.00 | 4.00 | — | — | — | |||||
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 GERN put/call ratio?
For the January 21, 2028 expiration, the GERN put/call ratio based on open interest is 1.17 (131 puts vs 112 calls), and 0.54 based on today's volume. A ratio above 1 means more puts than calls.
What is GERN's implied volatility?
At-the-money implied volatility for GERN options expiring January 21, 2028 is about 113.5%, an annualized estimate of how much the market expects Geron stock to move.
How many GERN option expiration dates are there?
GERN has 7 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.
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.