Axcelis Technologies (ACLS) Options Chain

NASDAQ: ACLSTechnologyIndustrial Machinery/ComponentsUSD

134.71+1.23 (+0.92%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $134.71
Put/call ratio (OI): 0.36
Put/call ratio (volume): 0.74
ATM implied volatility: 65.1%
Expected move: ±$37.84
Open interest (C / P): 1.26K / 450

ACLS options summary

The ACLS options chain for the December 18, 2026 expiration lists 37 call and 28 put contracts, with 68 days until expiration. Open interest stands at 1,258 calls and 450 puts, a put/call ratio of 0.36, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $135.00 strike is 65.1%, which implies the market expects a move of about ±$37.84 (28.1%) in Axcelis Technologies stock by expiration.

The most open interest sits at the $195.00 call (108 contracts) and the $80.00 put (100 contracts).

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

ACLS options chain · December 18, 2026

ACLS 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
—	—	—	—	—	—	55.00	0.00	1.00	0.20	110.9%	—	2
11	10	—	79.15	54.40	57.50	60.00	0.00	2.15	1.99	117.3%	1	48
2	—	331.3%	57.72	91.10	94.70	65.00	0.00	2.20	1.30	107.6%	1	3
2	2	90.2%	45.08	63.50	67.40	70.00	0.00	1.75	0.90	93.4%	2	10
0	1	—	61.80	0.00	0.00	75.00	0.00	2.40	0.75	91.0%	5	23
0	1	—	57.72	0.00	0.00	80.00	0.00	2.60	0.55	84.1%	4	100
5	3	81.2%	39.25	49.70	53.10	85.00	0.00	2.90	0.90	78.1%	2	80
11	1	78.7%	57.40	45.20	48.60	90.00	0.00	3.30	5.98	72.7%	2	17
3	1	—	54.20	26.50	28.60	95.00	0.55	3.60	1.70	69.4%	2	13
19	1	75.5%	17.00	36.80	40.10	100.00	1.60	4.10	2.60	68.4%	9	7
15	2	71.8%	14.39	32.80	35.50	105.00	—	—	—	—	—	—
7	1	72.5%	29.85	29.00	32.40	110.00	2.80	6.90	4.50	65.6%	1	12
27	10	70.6%	14.10	25.10	29.00	115.00	4.10	8.00	18.90	63.6%	2	14
10	2	69.0%	31.90	22.00	25.30	120.00	5.80	10.10	15.09	64.1%	1	5
21	2	68.5%	28.34	19.00	22.40	125.00	7.80	11.30	8.19	61.8%	4	8
77	2	68.1%	18.56	16.20	19.90	130.00	0.00	0.00	22.31	1.6%	1	0
ACLS $134.71
27	1	67.8%	16.90	13.80	17.50	135.00	12.60	16.80	33.30	62.4%	2	13
65	3	67.6%	14.27	11.60	15.50	140.00	15.40	19.30	13.67	61.3%	3	13
10	2	64.8%	16.80	9.50	12.60	145.00	18.50	22.40	40.71	61.0%	1	8
48	2	66.2%	14.69	8.00	11.50	150.00	21.90	25.70	19.48	60.7%	3	10
34	2	65.1%	8.81	6.30	9.90	155.00	38.80	42.30	36.51	118.1%	1	2
107	1	68.7%	8.00	6.00	9.30	160.00	29.70	32.60	49.80	60.2%	1	7
18	8	65.2%	9.03	4.00	7.70	165.00	51.90	55.00	58.40	142.4%	2	23
85	1	66.3%	7.88	3.00	7.30	170.00	37.30	41.00	57.60	59.2%	1	3
16	1	67.5%	2.20	2.55	6.60	175.00	55.50	58.00	40.60	124.1%	—	2
106	2	67.2%	4.46	1.75	5.90	180.00	65.90	68.70	71.20	153.0%	2	7
31	1	69.1%	3.79	1.65	5.40	185.00	—	—	—	—	—	—
14	2	69.3%	4.88	1.25	4.80	190.00	—	—	—	—	—	—
108	1	70.3%	4.82	0.90	4.50	195.00	57.10	61.00	65.44	51.1%	1	1
85	1	71.5%	2.65	0.70	4.20	200.00	70.60	73.90	48.95	100.1%	10	18
19	1	72.3%	1.81	0.25	3.50	210.00	68.40	72.20	70.00	—	—	1
89	1	74.8%	1.74	0.00	3.20	220.00	—	—	—	—	—	—
18	1	78.0%	1.09	0.00	2.90	230.00	—	—	—	—	—	—
69	5	81.0%	0.96	0.00	2.65	240.00	—	—	—	—	—	—
1	1	78.4%	5.90	0.30	1.40	250.00	—	—	—	—	—	—
60	4	78.5%	0.45	0.00	1.30	260.00	—	—	—	—	—	—
8	3	83.0%	0.68	0.00	1.40	270.00	—	—	—	—	—	—
30	3	90.5%	0.20	0.15	1.70	280.00	—	—	—	—	—	—

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 ACLS put/call ratio?

For the December 18, 2026 expiration, the ACLS put/call ratio based on open interest is 0.36 (450 puts vs 1,258 calls), and 0.74 based on today's volume. A ratio above 1 means more puts than calls.

What is ACLS's implied volatility?

At-the-money implied volatility for ACLS options expiring December 18, 2026 is about 65.1%, an annualized estimate of how much the market expects Axcelis Technologies stock to move.

How many ACLS option expiration dates are there?

ACLS 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.