Thermo Fisher Scientific (TMO) Options Chain

NYSE: TMOIndustrialsIndustrial Machinery/ComponentsUSD

658.02+6.04 (+0.93%)

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

Expiration date

Expiration: Oct 23, 2026
Days to expiration: 12
Share price: $658.02
Put/call ratio (OI): 1.98
Put/call ratio (volume): 1.27
Open interest (C / P): 277 / 549

TMO options summary

The TMO options chain for the October 23, 2026 expiration lists 29 call and 30 put contracts, with 12 days until expiration. Open interest stands at 277 calls and 549 puts, a put/call ratio of 1.98, which is more bearish, with puts outnumbering calls. The most open interest sits at the $780.00 call (77 contracts) and the $650.00 put (112 contracts).

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

TMO options chain · October 23, 2026

TMO 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
—	—	—	—	—	—	510.00	0.00	4.90	1.85	86.9%	—	1
—	—	—	—	—	—	520.00	0.00	4.90	0.60	81.5%	1	6
—	—	—	—	—	—	530.00	0.00	4.90	0.80	76.1%	88	59
—	—	—	—	—	—	540.00	0.00	4.90	0.82	70.8%	54	29
62	30	58.7%	95.60	105.30	113.70	550.00	0.00	3.40	2.15	60.4%	41	91
—	—	—	—	—	—	560.00	—	—	1.15	—	—	—
—	—	—	—	—	—	570.00	0.05	7.70	2.40	62.4%	1	4
1	—	53.9%	45.70	77.00	85.50	580.00	0.05	5.80	3.10	52.4%	1	4
3	3	52.9%	69.59	68.50	76.20	590.00	0.30	5.80	3.68	58.3%	1	9
—	—	—	—	—	—	600.00	1.60	6.90	5.00	55.7%	30	45
—	—	—	—	—	—	610.00	4.90	6.90	6.66	49.3%	1	8
1	—	58.2%	66.33	43.90	51.00	620.00	6.00	9.90	6.44	50.6%	5	9
—	—	—	—	—	—	625.00	—	—	16.15	—	—	—
11	1	57.3%	36.05	36.00	44.00	630.00	8.30	13.30	10.00	51.3%	6	12
—	—	—	—	—	—	632.50	—	—	10.30	—	—	—
—	—	—	—	—	—	637.50	—	—	11.40	—	—	—
3	1	56.4%	39.30	29.20	37.50	640.00	13.10	16.20	21.90	49.4%	75	108
—	—	—	—	—	—	645.00	—	—	12.81	—	—	—
—	—	—	—	—	—	647.50	—	—	15.79	—	—	—
3	1	51.8%	25.14	23.90	29.70	650.00	16.50	21.00	29.50	50.4%	5	112
—	—	—	—	—	—	652.50	—	—	18.84	—	—	—
—	—	—	—	—	—	655.00	—	—	29.40	—	—	—
—	—	—	—	—	—	657.50	—	—	22.00	—	—	—
TMO $658.02
3	1	54.4%	22.70	20.20	26.00	660.00	20.70	25.10	22.90	48.6%	1	3
—	—	—	23.70	—	—	662.50	—	—	25.86	—	—	—
—	—	—	22.00	—	—	665.00	—	—	25.10	—	—	—
—	—	—	21.70	—	—	667.50	—	—	—	—	—	—
11	2	50.9%	11.26	14.40	19.90	670.00	24.40	32.70	34.20	52.6%	75	47
—	—	—	35.67	—	—	675.00	—	—	—	—	—	—
—	—	—	—	—	—	677.50	—	—	32.68	—	—	—
5	1	50.6%	13.00	12.20	16.00	680.00	32.00	36.40	31.80	47.3%	—	1
—	—	—	29.49	—	—	685.00	—	—	—	—	—	—
24	4	47.7%	11.18	8.80	11.50	690.00	38.00	44.00	37.70	48.9%	—	1
—	—	—	12.80	—	—	695.00	—	—	—	—	—	—
26	4	55.6%	19.20	4.50	12.20	700.00	—	—	—	—	—	—
12	2	55.8%	5.91	3.50	9.90	710.00	—	—	—	—	—	—
—	—	—	11.11	—	—	715.00	—	—	—	—	—	—
8	1	52.1%	6.35	1.75	6.60	720.00	—	—	—	—	—	—
12	1	62.5%	2.75	0.40	8.50	730.00	—	—	—	—	—	—
2	1	54.9%	3.76	0.25	9.00	740.00	—	—	—	—	—	—
3	1	51.3%	1.98	0.05	5.50	750.00	—	—	—	—	—	—
2	1	53.5%	2.85	0.05	4.90	760.00	—	—	—	—	—	—
3	1	57.1%	3.50	0.05	4.90	770.00	—	—	—	—	—	—
77	246	60.5%	1.20	0.00	4.90	780.00	—	—	—	—	—	—
3	1	63.9%	1.60	0.00	4.90	790.00	—	—	—	—	—	—
2	1	67.2%	1.85	0.00	4.90	800.00	—	—	—	—	—	—

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 TMO put/call ratio?

For the October 23, 2026 expiration, the TMO put/call ratio based on open interest is 1.98 (549 puts vs 277 calls), and 1.27 based on today's volume. A ratio above 1 means more puts than calls.

How many TMO option expiration dates are there?

TMO has 14 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.