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TMO

Thermo Fisher Scientific Inc Common Stock (TMO)

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TMO in the last 90 days

Thermo Fisher Scientific Inc Common Stock (TMO) (TMO) had 2 congress transactions by 2 members and no insider purchases in filings from the last 90 days.

FINRA’s latest report (settlement 15 SEPT 2026) shows 5,019,933 shares held short, 2.7 days to cover, down 11.8% from the report before.

  • Congress: 0 purchases and 2 sales reported, amounts in the bands the law requires.
  • Delay: each filing below shows how many days passed between the trade and its publication. None of this is real-time.

Latest filing on file: 07 AUG 2026 · FINRA settlement 15 SEPT 2026 · public filings, reported as filed

What the price is doing

$659$488 → $659 · +35% over six months

TMO is up 35%. Short sellers still aren't backing off.

Bets against it — they pay off if the price falls — are up 11% over the same stretch.

$488 STARTAPRMAYJUNJULAUGSEPT07 MAY 2026 — Hon. Dwight Evans — $1,001 – $15,000 · partial10 JUL 2026 — Hon. Dan Newhouse — $1,001 – $15,000NOW $659

Politician activityBoughtSold

Short sellers

11 reports · twice a month

APR 0%peak +25%15 SEPT +11%APRMAYJUNJULAUGSEPT

Money betting TMO falls. Reported twice a month, and it shows up seven working days late.

Politicians

0 buys · 2 sales

Traded over six months

View activity →

Short sellers

Bets up 11%

Over six months · newest 15 SEPT 2026

See the numbers →

Insiders

Nothing reported

Traded over six months

Quiet Money

Our take on how well TMO holds up when sellers show up.

How it holds up · last 60 trading days

Through 21 SEPT 2026

Resilient

When TMO gets hit, it tends to hold up better than usual.

Lately, TMO has been harder to push down than usual.

That's been true for the last 5 trading days.

The last 6 months

ResilientMixedVulnerable
MAYJUNJULAUGSEPT
31 MAR 2026Now · 21 SEPT 2026

What the filings show

What the filings show · last 90 days

2 of 4 sources

-25Tilted out

Leaning outBalancedLeaning in

The disclosed money is leaning away from this name, on what has actually been filed. This reads on two of the four sources we track.

Short interest
Short interest fell 5.3% — 5,298,322 to 5,019,933 shares between 15 JUL 2026 and 15 SEPT 2026. See the filings →
+13
Congress
2 members of Congress disclosed 0 purchases and 2 sales. See the filings →
-100

This summarises filings that have already been published — it is not a forecast, a rating of the company, or advice. Every figure above is listed in full further down this page, with the document it came from.

FINRA short interest

Settlement 15 SEPT 2026 · shares held short

5,019,933shares held short

Days to cover

2.74

Avg daily volume

1,832,072

Since last report

-11.79%

As of 15 September 2026, 5,019,933 Thermo Fisher Scientific Inc Common Stock (TMO) shares were held short — the total across every reporting firm, not one fund's position. That is 670,655 shares fewer than the previous report, a 11.79% decrease. At the average daily volume of 1,832,072 shares, that position represents 2.74 days of trading — what the filing calls days to cover.

This is the most recent figure that exists, and it is 17 days old. FINRA collects short interest twice a month, on a settlement date, and publishes it about eight business days later. So nobody has a live short-interest number for TMO — not us, and not anyone quoting one. We print the settlement date on the figure so you always know which day you are looking at.

Across the 12 reports we hold, the position has risen from 4,072,471 shares on 31 March 2026 to 5,019,933 today, a change of 23.3%. The highest reading in that window was 5,690,588 shares on 31 August 2026.

SettlementShares shortDays to cover
15 SEPT 20265,019,9332.74
31 AUG 20265,690,5883.39
14 AUG 20264,744,1802.86
31 JUL 20264,985,8771.90
15 JUL 20265,298,3222.98
30 JUN 20265,351,5352.19
15 JUN 20264,418,3532.05
29 MAY 20264,693,3911.67
15 MAY 20264,773,5311.91
30 APR 20264,865,9722.12
15 APR 20264,538,9182.72
31 MAR 20264,072,4711.93
What is TMO's short interest?
5,019,933 shares, as of the 15 September 2026 settlement date. That is the figure FINRA published, unadjusted.
What percentage of the float is short?
We do not publish that, because FINRA does not publish float. The regulator reports the number of shares held short; turning it into a percentage needs a share count from somewhere else, and different sources disagree about what counts as float. We would rather give you the number that was actually filed than a percentage built on an assumption.
How current is this?
It is 17 days old, and that is as fresh as short interest gets. FINRA measures it twice a month and publishes it seven business days after the settlement date. Any site showing you a "live" short interest figure is showing you something else.
What does days to cover mean?
It is the short position divided by average daily trading volume — here, 2.74. It describes how many days of ordinary trading the position is equivalent to. It is arithmetic from the filing, not a prediction about what will happen.
Where does this come from?
FINRA's consolidated short interest file, which is public. We read it directly and store it unchanged, except that we blank the days-to-cover placeholder FINRA writes when a stock has almost no volume.

Disclosed insider buying on file

—no purchase on file passed the price check

Open-market purchases only — the amount is a fact, not a verdict.

On file here

Short positions0

Insider purchases0

Congress transactions32

Latest change07 AUG 2026

SHORT POSITIONS · 0INSIDER BUYS · 0CONGRESS · 32

Congress transactions on file

32 disclosed · newest first · every row links to its filing

WhoAmount as filedTradedFiledLag
Hon. Michael RulliSOLD$1,001 – $15,00012 DEC 202407 AUG 2026603 days — the law says 45
Hon. Dan NewhouseSOLD$1,001 – $15,00010 JUL 202617 JUL 20267 days
Hon. Dwight EvansSOLD$1,001 – $15,000 · partial07 MAY 202615 MAY 20268 days
Hon. Julia LetlowBOUGHT$1,001 – $15,00023 OCT 202413 JAN 2026447 days — the law says 45
Hon. Julia LetlowSOLD$1,001 – $15,00028 APR 202513 JAN 2026260 days — the law says 45
Hon. Julia LetlowBOUGHT$1,001 – $15,00025 JUL 202513 JAN 2026172 days — the law says 45
Hon. Lisa McClainSOLD$1,001 – $15,00031 OCT 202521 NOV 202521 days
Hon. Lisa McClainSOLD$1,001 – $15,00030 OCT 202521 NOV 202522 days
Hon. Lisa McClainBOUGHT$1,001 – $15,00030 OCT 202521 NOV 202522 days
Hon. Valerie HoyleSOLD$1,001 – $15,00023 SEPT 202510 OCT 202517 days
Hon. Valerie HoyleBOUGHT$1,001 – $15,00029 OCT 202412 SEPT 2025318 days — the law says 45
Hon. Valerie HoyleBOUGHT$1,001 – $15,00006 JUN 202512 SEPT 202598 days — the law says 45
Hon. Valerie HoyleSOLD$1,001 – $15,00003 MAR 202512 SEPT 2025193 days — the law says 45
Hon. Kelly Louise MorrisonSOLD$15,001 – $50,000 · partial19 AUG 202511 SEPT 202523 days
Hon. Kelly Louise MorrisonSOLD$15,001 – $50,000 · partial19 AUG 202511 SEPT 202523 days
Hon. Kelly Louise MorrisonSOLD$1,001 – $15,000 · partial19 AUG 202511 SEPT 202523 days
Hon. Kelly Louise MorrisonSOLD$1,001 – $15,000 · partial19 AUG 202511 SEPT 202523 days
Hon. Lisa McClainBOUGHT$1,001 – $15,00011 DEC 202413 AUG 2025245 days — the law says 45
Hon. Lisa McClainSOLD$1,001 – $15,000 · partial10 JUN 202513 AUG 202564 days — the law says 45
Hon. Lisa McClainBOUGHT$1,001 – $15,00022 JUL 202513 AUG 202522 days
Hon. Richard W. AllenSOLD$15,001 – $50,00016 MAY 202518 JUN 202533 days
Hon. Thomas H. Kean JrBOUGHT$1,001 – $15,00005 MAY 202517 JUN 202543 days
Hon. Rob BresnahanBOUGHT$15,001 – $50,00015 MAY 202531 MAY 202516 days
Hon. Dan NewhouseSOLD$1,001 – $15,000 · partial11 APR 202516 MAY 202535 days
Hon. Richard W. AllenSOLD$15,001 – $50,00011 APR 202515 MAY 202534 days
Hon. Julie JohnsonSOLD$1,001 – $15,00007 APR 202514 MAY 202537 days
Hon. Bruce WestermanSOLD$1,001 – $15,00021 APR 202512 MAY 202521 days
Hon. Jefferson ShreveSOLD$15,001 – $50,00007 APR 202508 MAY 202531 days
Hon. Rob BresnahanSOLD$15,001 – $50,00008 APR 202528 APR 202520 days
Hon. Bruce WestermanBOUGHT$1,001 – $15,00003 MAR 202516 APR 202544 days
Hon. Greg LandsmanSOLD$1,001 – $15,00027 MAR 202508 APR 202512 days
Hon. Rob BresnahanSOLD$1,001 – $15,00025 FEB 202527 MAR 202530 days
What this page will never showNo price targetsNo score out of 100No buy or sell callsNo predictionsDocuments, dates, and how late they were.