Onto Innovation (ONTO) Options Chain

NYSE: ONTOIndustrialsIndustrial Machinery/ComponentsUSD

293.79+1.12 (+0.38%)

Market open · Delayed 15 min · as of Oct 9, 3:20 PM ET

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 7
Share price: $293.87
Put/call ratio (OI): 0.71
Put/call ratio (volume): 0.92
ATM implied volatility: 57.3%
Expected move: ±$23.32
Open interest (C / P): 1.67K / 1.19K

ONTO options summary

The ONTO options chain for the October 16, 2026 expiration lists 26 call and 25 put contracts, with 7 days until expiration. Open interest stands at 1,667 calls and 1,188 puts, a put/call ratio of 0.71, which is fairly balanced between calls and puts. At-the-money implied volatility near the $290.00 strike is 57.3%, which implies the market expects a move of about ±$23.32 (7.9%) in Onto Innovation stock by expiration.

The most open interest sits at the $330.00 call (526 contracts) and the $210.00 put (440 contracts).

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

ONTO options chain · October 16, 2026

ONTO 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
—	—	—	—	—	—	170.00	0.00	2.15	0.07	209.7%	—	2
10	—	211.5%	76.25	116.30	120.30	175.00	0.00	2.15	1.52	199.9%	—	6
—	—	—	—	—	—	180.00	0.00	2.15	0.28	190.6%	10	12
—	—	—	—	—	—	185.00	0.00	2.15	0.05	181.4%	1	8
11	1	118.2%	112.50	102.60	105.30	190.00	0.00	0.20	0.50	120.5%	1	14
—	—	—	—	—	—	195.00	0.00	0.80	1.07	137.7%	1	13
10	10	105.5%	104.60	92.60	95.30	200.00	0.00	2.15	1.08	155.1%	1	79
5	4	147.2%	75.31	81.80	85.30	210.00	0.00	1.05	1.12	121.1%	1	440
4	1	86.5%	58.58	72.60	75.40	220.00	0.00	0.45	0.45	93.1%	10	45
—	—	—	—	—	—	230.00	0.00	2.25	0.10	107.9%	7	52
9	8	103.0%	50.06	51.60	55.60	240.00	0.00	2.40	0.30	94.0%	43	51
13	4	90.8%	53.77	41.90	45.90	250.00	0.00	1.45	0.60	70.2%	3	46
12	1	59.1%	42.20	33.00	36.50	260.00	0.70	1.75	1.19	64.2%	1	53
26	1	56.7%	25.20	24.40	27.20	270.00	1.80	2.90	2.60	60.7%	1	43
56	1	56.5%	16.95	16.60	19.50	280.00	3.50	5.40	6.20	58.3%	4	85
24	2	55.6%	11.92	10.40	12.90	290.00	7.20	9.50	8.35	59.0%	1	103
ONTO $293.87
82	2	57.5%	8.20	6.30	8.30	300.00	12.90	14.80	13.96	59.9%	2	45
126	7	59.3%	3.80	3.80	5.00	310.00	19.40	22.20	16.00	61.1%	2	45
148	1	58.2%	2.81	1.80	2.70	320.00	26.90	30.60	22.49	61.4%	1	42
526	1	58.8%	1.60	0.70	1.60	330.00	36.60	39.30	16.00	66.7%	1	3
122	16	74.0%	2.70	0.45	2.50	340.00	—	—	—	—	—	—
398	17	78.8%	2.50	0.10	2.10	350.00	—	—	—	—	—	—
27	3	90.0%	0.45	0.00	2.40	360.00	—	—	—	—	—	—
5	1	98.1%	0.40	0.00	2.30	370.00	—	—	—	—	—	—
7	4	106.3%	0.30	0.00	2.25	380.00	84.90	88.90	94.50	98.6%	—	1
7	1	114.0%	0.40	0.00	2.20	390.00	—	—	—	—	—	—
13	9	119.6%	0.20	0.00	2.00	400.00	105.00	108.40	110.00	108.2%	1	0
4	3	128.8%	0.20	0.00	2.15	410.00	—	—	—	—	—	—
7	1	136.0%	0.55	0.00	2.15	420.00	124.80	128.90	91.70	126.6%	1	0
—	—	—	—	—	—	430.00	134.80	138.90	101.60	133.3%	1	0
13	3	149.8%	0.44	0.00	2.15	440.00	144.60	148.90	111.50	136.4%	1	0
2	1	156.3%	0.10	0.00	2.15	450.00	—	—	—	—	—	—

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 ONTO put/call ratio?

For the October 16, 2026 expiration, the ONTO put/call ratio based on open interest is 0.71 (1,188 puts vs 1,667 calls), and 0.92 based on today's volume. A ratio above 1 means more puts than calls.

What is ONTO's implied volatility?

At-the-money implied volatility for ONTO options expiring October 16, 2026 is about 57.3%, an annualized estimate of how much the market expects Onto Innovation stock to move.

How many ONTO option expiration dates are there?

ONTO has 8 listed expiration dates, from Oct 16, 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.