Byrna Technologies (BYRN) Options Chain

NASDAQ: BYRNMiscellaneousIndustrial Machinery/ComponentsUSD

4.52-0.21 (-4.44%)

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

Expiration date

Expiration: Jan 21, 2028
Days to expiration: 468
Share price: $4.52
Put/call ratio (OI): 0.16
Put/call ratio (volume): 0.83
ATM implied volatility: 98.8%
Expected move: ±$5.06
Open interest (C / P): 1.52K / 243

BYRN options summary

The BYRN options chain for the January 21, 2028 expiration lists 13 call and 11 put contracts, with 468 days until expiration. Open interest stands at 1,518 calls and 243 puts, a put/call ratio of 0.16, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $5.00 strike is 98.8%, which implies the market expects a move of about ±$5.06 (111.9%) in Byrna Technologies stock by expiration.

The most open interest sits at the $5.00 call (635 contracts) and the $2.50 put (70 contracts).

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

BYRN options chain · January 21, 2028

BYRN 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
225	21	114.3%	2.50	2.40	3.30	2.50	0.00	2.90	0.40	175.6%	2	70
BYRN $4.52
635	2	109.2%	1.60	1.25	2.70	5.00	0.55	3.60	1.76	88.5%	3	5
80	40	111.9%	0.65	0.00	3.10	7.50	—	—	—	—	—	—
198	3	90.3%	0.70	0.65	0.95	10.00	4.50	7.20	6.17	67.0%	50	63
68	1	90.4%	0.45	0.20	1.00	12.50	6.00	9.60	9.15	141.7%	47	55
74	20	137.9%	0.30	0.00	2.75	15.00	9.90	12.60	11.65	107.8%	2	3
36	6	82.2%	0.17	0.00	0.50	17.50	11.00	14.40	13.42	146.9%	3	3
0	1	25.0%	0.35	0.00	0.00	20.00	14.90	17.60	15.72	119.9%	50	0
0	3	25.0%	0.85	0.00	0.00	22.50	0.00	0.00	16.90	—	1	0
41	8	111.5%	0.11	0.05	0.90	25.00	11.20	14.50	11.45	—	1	44
77	80	165.0%	0.10	0.00	2.70	30.00	24.00	28.50	26.27	135.7%	—	0
0	5	50.0%	1.95	0.00	0.00	35.00	—	—	—	—	—	—
84	1	137.7%	2.45	0.00	1.25	40.00	33.50	37.80	36.50	104.1%	—	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 BYRN put/call ratio?

For the January 21, 2028 expiration, the BYRN put/call ratio based on open interest is 0.16 (243 puts vs 1,518 calls), and 0.83 based on today's volume. A ratio above 1 means more puts than calls.

What is BYRN's implied volatility?

At-the-money implied volatility for BYRN options expiring January 21, 2028 is about 98.8%, an annualized estimate of how much the market expects Byrna Technologies stock to move.

How many BYRN option expiration dates are there?

BYRN has 6 listed expiration dates, from Oct 16, 2026 to Jan 21, 2028.

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.