Geron (GERN) Options Chain

NASDAQ: GERNHealth CareBiotechnology: Pharmaceutical PreparationsUSD

1.23+0.005 (+0.41%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Mar 19, 2027
Days to expiration: 159
Share price: $1.23
Put/call ratio (OI): 0.10
Put/call ratio (volume): 0.19
ATM implied volatility: 132.8%
Expected move: ±$1.07
Open interest (C / P): 3.33K / 332

GERN options summary

The GERN options chain for the March 19, 2027 expiration lists 6 call and 5 put contracts, with 159 days until expiration. Open interest stands at 3,327 calls and 332 puts, a put/call ratio of 0.10, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $1.00 strike is 132.8%, which implies the market expects a move of about ±$1.07 (87.7%) in Geron stock by expiration.

The most open interest sits at the $2.00 call (1.36K contracts) and the $3.00 put (110 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

GERN options chain · March 19, 2027

GERN calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
11	4	210.9%	0.75	0.45	1.30	0.50	0.00	0.10	0.10	131.3%	1	3
612	1	132.8%	0.43	0.40	0.60	1.00	0.10	0.45	0.20	132.8%	20	60
GERN $1.23
1,213	16	97.7%	0.25	0.15	0.30	1.50	0.10	0.85	0.45	90.2%	4	59
1,363	71	105.5%	0.15	0.10	0.20	2.00	0.30	1.30	0.71	56.3%	—	100
106	80	149.2%	0.10	0.00	0.35	3.00	1.50	2.25	1.80	122.7%	10	110
22	10	143.8%	0.05	0.00	0.20	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 March 19, 2027 expiration, the GERN put/call ratio based on open interest is 0.10 (332 puts vs 3,327 calls), and 0.19 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 March 19, 2027 is about 132.8%, 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.