TMO options flow: unusual options activity in Thermo Fisher Scientific Inc.

Updated 28 September 2026, 09:54 ET

Over the last week the tape recorded 70 unusual options prints in Thermo Fisher Scientific Inc. (TMO), $8.7M of tracked premium, close to even between bullish and bearish premium. Bullish premium was $4.1M against $4.1M bearish; $5.7M went into calls and $3.1M into puts, a put call ratio of 0.54. The largest print was $619K of TMO 19 Jan 2029 $760 puts on 22 September 2026, executed at ask. The last session with prints, 25 September 2026, added 7 prints and $775K of premium. TMO closed at $675.00 on 25 September 2026, down 0.5%.

This week's unusual flow

Unusual prints70

Tracked premium$8.7M

Net premium-$53K

Bullish premium$4.1M

Bearish premium$4.1M

Call premium$5.7M

Put premium$3.1M

P/C ratio0.54

Sweeps51%

Size over OI26

Whale prints0

High conviction12

Prints from 21 September 2026 to 25 September 2026, 5 sessions. Delayed tier: every print is shown twenty minutes after it executed, and the page is rebuilt after each session.

Net premium is bullish minus bearish premium. The put call ratio is put premium divided by call premium, weighted by money rather than by contract count. Sweeps is the share of prints executed across several exchanges at once. Read the guide: Reading the Pulse.

Largest prints of the week

Date	Contract	Type	Size	Open int.	Premium	Execution	Sentiment	Tier
22 Sep 2026	TMO 19 Jan 2029 $760 puts	Trade	40	0	$619K	At ask	Bearish	High conviction
22 Sep 2026	TMO 19 Jan 2029 $760 puts	Trade	40	0	$610K	At ask	Bearish	High conviction
22 Sep 2026	TMO 19 Jan 2029 $760 puts	Trade	35	0	$533K	At ask	Bearish	High conviction
22 Sep 2026	TMO 19 Jan 2029 $760 puts	Trade	35	0	$532K	At ask	Bearish	Notable
24 Sep 2026	TMO 16 Oct 2026 $680 calls	Trade	300	198	$516K	At ask	Bullish	High conviction
22 Sep 2026	TMO 19 Jan 2029 $820 calls	Trade	50	0	$488K	At ask	Bullish	High conviction
22 Sep 2026	TMO 19 Jan 2029 $820 calls	Trade	35	0	$342K	At ask	Bullish	High conviction
24 Sep 2026	TMO 17 Jun 2027 $840 calls	Trade	100	4	$298K	At ask	Bullish	High conviction
25 Sep 2026	TMO 16 Oct 2026 $620 calls	Sweep	50	201	$285K	At bid	Bearish	Notable
25 Sep 2026	TMO 16 Oct 2026 $620 calls	Sweep	46	201	$252K	At bid	Neutral	Notable
24 Sep 2026	TMO 21 Jan 2028 $500 calls	Sweep	10	197	$234K	At ask	Bullish	Notable
22 Sep 2026	TMO 30 Oct 2026 $600 calls	Trade	30	24	$206K	At ask	Bullish	Notable

Size above open interest means the trade opened a position larger than everything that existed in the contract the night before. Above ask and below bid are the most aggressive executions. Read the guide: Size versus open interest.

Where the money is aimed

Expiry	Prints	Premium	Calls share	Net premium
19 Jan 2029	11	$3.7M	39%	-$1.4M
16 Oct 2026	19	$2.2M	100%	+$238K
21 Jan 2028	6	$561K	82%	+$358K
15 Jan 2027	9	$481K	29%	-$16K
30 Oct 2026	4	$448K	100%	+$244K
18 Dec 2026	7	$363K	67%	-$108K

The most premium, $3.7M, is aimed at the 19 Jan 2029 expiry; the nearest expiry with unusual prints is 16 Oct 2026.

A print in a contract expiring this week is a view about the next few days, often about a known event; a print months out is a different kind of statement. Read the guide: 0DTE options flow.

The last session, 25 September 2026

Prints7

Premium$775K

Net premium-$204K

P/C ratio0.14

Sweeps86%

Date	Contract	Type	Size	Open int.	Premium	Execution	Sentiment	Tier
25 Sep 2026	TMO 16 Oct 2026 $620 calls	Sweep	50	201	$285K	At bid	Bearish	Notable
25 Sep 2026	TMO 16 Oct 2026 $620 calls	Sweep	46	201	$252K	At bid	Neutral	Notable
25 Sep 2026	TMO 16 Oct 2026 $620 calls	Sweep	14	201	$76K	At ask	Bullish	Notable
25 Sep 2026	TMO 18 Dec 2026 $690 puts	Sweep	13	5	$65K	At ask	Bearish	High conviction
25 Sep 2026	TMO 20 Nov 2026 $660 calls	Sweep	10	257	$40K	At ask	Bullish	Notable

Every print in TMO with its full detail, the live tape, one tap filters and saved screeners: open TMO in Options Sentiment Screener.

Price

Last close$675.00

Day-0.50%

1 week+3.62%

1 month+6.52%

3 months+31.57%

1 year+44.23%

52 week high$682.98

52 week low$435.27

Volume2,097,584

Market cap$250.8B

The live quote and the price chart sit beside the ticker's flow in the app: open TMO in Options Sentiment Screener.

Analysts

The most recent analyst targets on file, from 13 firms, have a median of $600, 11.1% below the last close.

Calls bought at a strike above the average target are a bet that the analysts are too cautious; puts far below the price in a name they like are protection or a strong disagreement. Read the guide: Reading one ticker's flow.

About Thermo Fisher Scientific Inc.

Exchange: NYSE
Sector: Health Care
Industry: Measuring And Control Equipment
Headquarters: Waltham, Massachusetts
Website: thermofisher.com

Thermo Fisher Scientific Inc. offers life sciences solutions, analytical instruments, specialty diagnostics, and laboratory products and service worldwide. Its Life Sciences Solutions segment offers reagents, instruments, and consumables for biological and medical research, discovery, and production of drugs and vaccines. Specialty Diagnostics segment offers liquid, ready-to-use, and lyophilized immunodiagnostic reagent kits, as well as calibrators, controls, and calibration verification fluids. Laboratory Products and Services segment provides laboratory refrigerators and freezers.

In the same sector

Flow pages for other Health Care names in the S&P 500:

LLY Eli Lilly & Co.JNJ Johnson & Johnson ABBV AbbVie Inc.MRK Merck & Co. Inc.UNH UnitedHealth Group Inc.AMGN Amgen Inc.GILD Gilead Sciences, Inc.ABT Abbott Laboratories

Learn

The live tape for TMO with every print's execution detail, one tap filters for calls, puts, sweeps and 0DTE, saved screeners and, for Realtime subscribers, push alerts and no delay. The same screen is in the iOS and Android apps.

Open TMO in Options Sentiment Screener