Stem (STEM) Options Chain

NYSE: STEMTechnologyEDP ServicesUSD

4.20-0.27 (-6.04%)

At close: Oct 8, 4:00 PM ET · Delayed 15 min

After hours: 4.16 -0.86%

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 8
Share price: $4.20
Put/call ratio (OI): 0.60
Put/call ratio (volume): 0.44
ATM implied volatility: 134.4%
Expected move: ±$0.8356
Open interest (C / P): 405 / 242

STEM options summary

The STEM options chain for the October 16, 2026 expiration lists 9 call and 9 put contracts, with 8 days until expiration. Open interest stands at 405 calls and 242 puts, a put/call ratio of 0.60, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $5.00 strike is 134.4%, which implies the market expects a move of about ±$0.8356 (19.9%) in Stem stock by expiration.

The most open interest sits at the $7.50 call (141 contracts) and the $5.00 put (200 contracts).

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

STEM options chain · October 16, 2026

STEM 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
2	2	360.9%	1.99	1.55	2.20	2.50	0.00	0.05	0.01	206.3%	1	20
STEM $4.20
126	8	115.6%	0.10	0.00	0.15	5.00	0.55	0.95	0.55	153.1%	1	200
141	1	203.1%	0.05	0.00	0.05	7.50	2.75	3.70	3.62	431.3%	1	1
63	10	278.1%	0.03	0.00	0.05	10.00	3.90	5.10	4.50	—	1	16
22	1	593.8%	0.05	0.00	0.75	12.50	0.00	0.00	7.20	—	2	0
11	2	375.0%	0.01	0.00	0.05	15.00	8.70	10.10	8.70	—	2	5
4	1	693.8%	0.35	0.00	0.75	17.50	0.00	0.00	12.15	—	4	0
33	1	487.5%	0.02	0.00	0.10	20.00	0.00	0.00	14.74	—	—	0
3	1	575.0%	0.10	0.00	0.20	22.50	0.00	0.00	17.15	—	—	0

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 STEM put/call ratio?

For the October 16, 2026 expiration, the STEM put/call ratio based on open interest is 0.60 (242 puts vs 405 calls), and 0.44 based on today's volume. A ratio above 1 means more puts than calls.

What is STEM's implied volatility?

At-the-money implied volatility for STEM options expiring October 16, 2026 is about 134.4%, an annualized estimate of how much the market expects Stem stock to move.

How many STEM option expiration dates are there?

STEM has 5 listed expiration dates, from Oct 16, 2026 to Apr 16, 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.