Geospace Technologies (GEOS) Options Chain

NASDAQ: GEOSIndustrialsIndustrial Machinery/ComponentsUSD

4.68+0.06 (+1.30%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $4.68
Put/call ratio (OI): 1.97
Put/call ratio (volume): 0.23
ATM implied volatility: 84.0%
Expected move: ±$1.70
Open interest (C / P): 1.35K / 2.66K

GEOS options summary

The GEOS options chain for the December 18, 2026 expiration lists 7 call and 4 put contracts, with 68 days until expiration. Open interest stands at 1,347 calls and 2,657 puts, a put/call ratio of 1.97, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $5.00 strike is 84.0%, which implies the market expects a move of about ±$1.70 (36.3%) in Geospace Technologies stock by expiration.

The most open interest sits at the $10.00 call (841 contracts) and the $2.50 put (1.23K contracts).

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

GEOS options chain · December 18, 2026

GEOS 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
15	5	109.4%	2.60	1.90	2.60	2.50	0.00	0.30	0.10	137.5%	22	1,229
GEOS $4.68
111	25	89.8%	0.60	0.55	0.65	5.00	0.70	0.95	0.89	78.1%	1	389
310	71	99.2%	0.18	0.15	0.20	7.50	2.40	3.50	2.75	90.6%	1	21
841	1	160.9%	0.05	0.05	0.60	10.00	4.80	6.00	5.23	110.9%	2	1,018
39	1	139.8%	0.05	0.00	0.20	12.50	—	—	—	—	—	—
0	1	50.0%	0.10	0.00	0.00	15.00	—	—	—	—	—	—
31	10	236.3%	0.51	0.00	0.80	17.50	—	—	—	—	—	—

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 GEOS put/call ratio?

For the December 18, 2026 expiration, the GEOS put/call ratio based on open interest is 1.97 (2,657 puts vs 1,347 calls), and 0.23 based on today's volume. A ratio above 1 means more puts than calls.

What is GEOS's implied volatility?

At-the-money implied volatility for GEOS options expiring December 18, 2026 is about 84.0%, an annualized estimate of how much the market expects Geospace Technologies stock to move.

How many GEOS option expiration dates are there?

GEOS has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 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.