Allegro MicroSystems (ALGM) Options Chain

NASDAQ: ALGMTechnologySemiconductorsUSD

35.62-0.655 (-1.81%)

Market open · Delayed 15 min · as of Oct 9, 2:51 PM ET

Expiration date

Expiration: Jan 21, 2028
Days to expiration: 469
Share price: $35.58
Put/call ratio (OI): 0.10
Put/call ratio (volume): 0.13
ATM implied volatility: 65.3%
Expected move: ±$26.36
Open interest (C / P): 1.07K / 105

ALGM options summary

The ALGM options chain for the January 21, 2028 expiration lists 30 call and 15 put contracts, with 469 days until expiration. Open interest stands at 1,072 calls and 105 puts, a put/call ratio of 0.10, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $35.00 strike is 65.3%, which implies the market expects a move of about ±$26.36 (74.1%) in Allegro MicroSystems stock by expiration.

The most open interest sits at the $75.00 call (278 contracts) and the $25.00 put (26 contracts).

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

ALGM options chain · January 21, 2028

ALGM 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
82	164	91.8%	28.50	23.70	25.80	12.50	0.05	1.05	0.70	65.9%	7	20
14	10	87.7%	26.00	21.90	23.80	15.00	0.00	0.00	1.20	12.5%	2	0
0	2	—	30.00	0.00	0.00	17.50	1.95	3.10	2.05	78.4%	1	2
10	1	94.1%	28.00	18.50	22.50	20.00	2.10	2.95	3.07	67.1%	1	13
6	4	230.9%	23.30	28.00	32.50	22.50	0.00	0.00	3.48	12.5%	1	0
15	1	76.7%	16.25	15.40	17.10	25.00	3.50	4.70	4.51	62.8%	1	26
14	2	74.0%	18.50	14.00	15.50	27.50	2.65	7.00	4.40	59.2%	1	2
106	1	73.1%	14.67	13.00	14.10	30.00	0.00	0.00	7.28	3.1%	1	0
18	1	173.1%	18.40	22.00	27.00	32.50	—	—	—	—	—	—
30	1	72.5%	11.80	10.80	12.30	35.00	8.10	9.60	10.00	58.3%	1	4
ALGM $35.58
14	10	71.7%	11.60	9.80	11.40	37.50	9.60	11.10	10.37	57.6%	1	3
25	1	71.1%	9.59	9.00	10.50	40.00	11.10	12.70	10.90	56.7%	1	14
19	1	70.5%	11.00	8.10	9.80	42.50	0.00	0.00	13.95	—	5	0
16	1	68.5%	7.80	7.50	8.50	45.00	0.00	0.00	15.46	—	1	0
30	1	70.0%	7.87	6.80	8.50	47.50	12.90	17.00	13.30	54.0%	4	4
123	6	69.6%	9.16	6.30	7.80	50.00	18.10	19.80	19.41	53.8%	5	17
6	—	130.3%	16.50	14.00	18.00	52.50	—	—	—	—	—	—
32	1	69.8%	6.95	5.40	6.90	55.00	—	—	—	—	—	—
10	5	80.8%	30.85	5.90	9.10	57.50	—	—	—	—	—	—
20	10	70.1%	5.33	4.50	6.30	60.00	—	—	—	—	—	—
2	1	79.0%	12.90	5.10	7.80	62.50	—	—	—	—	—	—
69	2	69.6%	5.00	3.70	5.60	65.00	—	—	—	—	—	—
0	—	148.1%	21.12	14.70	18.50	67.50	—	—	—	—	—	—
47	5	68.7%	5.26	3.10	4.80	70.00	—	—	—	—	—	—
0	—	12.5%	7.03	0.00	0.00	72.50	—	—	—	—	—	—
278	2	70.0%	4.20	3.20	4.10	75.00	—	—	—	—	—	—
58	10	70.1%	4.19	2.50	4.00	80.00	—	—	—	—	—	—
13	5	69.5%	3.92	2.00	3.60	85.00	—	—	—	—	—	—
1	—	69.3%	2.70	1.75	3.20	90.00	—	—	—	—	—	—
14	10	69.8%	3.13	1.55	2.95	95.00	—	—	—	—	—	—

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 ALGM put/call ratio?

For the January 21, 2028 expiration, the ALGM put/call ratio based on open interest is 0.10 (105 puts vs 1,072 calls), and 0.13 based on today's volume. A ratio above 1 means more puts than calls.

What is ALGM's implied volatility?

At-the-money implied volatility for ALGM options expiring January 21, 2028 is about 65.3%, an annualized estimate of how much the market expects Allegro MicroSystems stock to move.

How many ALGM option expiration dates are there?

ALGM has 9 listed expiration dates, from Oct 16, 2026 to Dec 15, 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.