Align Technology (ALGN) Options Chain

NASDAQ: ALGNHealth CareIndustrial SpecialtiesUSD

141.03+1.16 (+0.83%)

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

After hours: 141.03 0.00%

Expiration date

Expiration: Oct 9, 2026
Days to expiration: 1
Share price: $141.03
Put/call ratio (OI): 1.58
Put/call ratio (volume): 11.72
ATM implied volatility: 61.6%
Expected move: ±$4.55
Open interest (C / P): 626 / 987

ALGN options summary

The ALGN options chain for the October 9, 2026 expiration lists 15 call and 28 put contracts, with 1 day until expiration. Open interest stands at 626 calls and 987 puts, a put/call ratio of 1.58, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $141.00 strike is 61.6%, which implies the market expects a move of about ±$4.55 (3.2%) in Align Technology stock by expiration.

The most open interest sits at the $157.50 call (137 contracts) and the $130.00 put (183 contracts).

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

ALGN options chain · October 9, 2026

ALGN 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
—	—	—	—	—	—	125.00	0.00	4.90	0.55	205.4%	—	1
—	—	—	—	—	—	127.00	0.00	0.05	0.05	62.5%	4	36
—	—	—	—	—	—	129.00	0.00	4.90	0.30	172.0%	50	5
—	—	—	—	—	—	130.00	0.00	1.50	0.15	102.8%	178	183
—	—	—	—	—	—	131.00	0.00	4.90	0.60	155.0%	—	2
—	—	—	—	—	—	133.00	0.00	3.50	0.45	116.7%	117	48
—	—	—	—	—	—	134.00	0.00	2.60	0.10	94.4%	1	81
—	—	—	—	—	—	135.00	0.00	1.40	0.33	66.6%	1	70
—	—	—	—	—	—	136.00	0.00	2.50	1.40	77.0%	4	55
—	—	—	—	—	—	137.00	0.00	2.65	0.64	70.8%	31	52
—	—	—	—	—	—	138.00	0.00	3.60	1.32	74.8%	55	71
—	—	—	—	—	—	139.00	0.05	2.05	1.25	71.5%	13	39
—	—	—	—	—	—	140.00	0.00	4.50	1.65	65.9%	2	57
—	—	—	—	—	—	141.00	0.70	4.40	2.00	61.6%	37	42
ALGN $141.03
10	2	47.8%	1.24	0.15	1.55	142.00	1.00	7.00	3.48	83.6%	2	23
—	—	—	—	—	—	143.00	0.05	8.10	2.65	71.2%	7	107
—	—	—	—	—	—	144.00	2.50	8.00	5.95	84.9%	1	7
18	12	66.3%	1.30	0.00	1.25	145.00	1.65	8.90	3.41	67.8%	51	53
62	1	80.9%	0.90	0.00	3.00	146.00	1.80	9.40	7.53	54.6%	15	15
16	5	109.1%	0.05	0.00	4.50	147.00	5.10	10.00	6.50	90.6%	6	0
8	12	120.8%	0.21	0.00	4.80	148.00	—	—	—	—	—	—
—	—	—	—	—	—	149.00	6.20	12.40	9.40	97.1%	1	5
32	4	58.9%	0.23	0.00	0.45	150.00	8.10	13.40	9.50	117.5%	2	11
35	2	124.8%	0.15	0.00	3.00	152.50	8.70	15.90	7.53	100.8%	1	1
47	5	159.6%	0.25	0.00	4.20	155.00	10.10	18.40	10.75	85.5%	2	18
137	1	185.9%	0.73	0.00	4.90	157.50	13.50	20.90	10.23	122.5%	—	2
26	1	200.6%	0.05	0.00	4.90	160.00	16.00	23.40	15.37	134.6%	3	2
35	1	214.8%	0.15	0.00	4.90	162.50	—	—	—	—	—	—
53	1	228.3%	0.05	0.00	4.90	165.00	21.40	28.40	10.00	167.8%	—	1
59	1	254.1%	0.65	0.00	4.90	170.00	26.40	33.40	13.80	189.9%	2	0
87	2	278.2%	0.57	0.00	4.90	175.00	—	—	—	—	—	—
1	—	301.0%	0.50	0.00	4.90	180.00	—	—	—	—	—	—

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 ALGN put/call ratio?

For the October 9, 2026 expiration, the ALGN put/call ratio based on open interest is 1.58 (987 puts vs 626 calls), and 11.72 based on today's volume. A ratio above 1 means more puts than calls.

What is ALGN's implied volatility?

At-the-money implied volatility for ALGN options expiring October 9, 2026 is about 61.6%, an annualized estimate of how much the market expects Align Technology stock to move.

How many ALGN option expiration dates are there?

ALGN has 15 listed expiration dates, from Oct 9, 2026 to Jan 19, 2029.

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.