Free Trial
→ From the man who predicted 2008 crash… (From Porter & Company) (Ad)tc pixel Free TMDX Stock Alerts

TransMedics Group (TMDX) Institutional Ownership

TransMedics Group logo
$63.20 +1.16 (+1.87%)
Closing price 05/15/2026 04:00 PM Eastern
Extended Trading
$63.17 -0.03 (-0.04%)
As of 05/15/2026 07:59 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
Compare

Institutional Ownership Changes (13F Filings) for TransMedics Group (NASDAQ:TMDX)

Current
Institutional Ownership
Percentage
99.67%
Number of
Institutional Buyers
(last 12 months)
289
Total
Institutional Inflows
(last 12 months)
$773.87M
Number of
Institutional Sellers
(last 12 months)
151
Total
Institutional Outflows
(last 12 months)
$1.50B
Get TMDX Insider Trade Alerts

Want to know when executives and insiders are buying or selling TransMedics Group stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Subscribe Now
SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.
Skip Chart & View Institutional Buying and Selling Data

TMDX Institutional Buying and Selling by Quarter

TransMedics Group Major Shareholders & Ownership History

Export
Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/14/2026 Beaconlight Capital LLC42,478$4.22M2.2%+44.8%0.123%
5/14/2026 Public Employees Retirement System of Ohio14,666$1.46M0.0%+8.1%0.042%
5/14/2026 Keebeck Wealth Management5,175$514K0.1%+12.4%0.015%
5/14/2026 Sei Investments Co.69,629$6.92M0.0%+25.9%0.201%
5/13/2026 Cetera Investment Advisers17,073$1.70M0.0%+58.5%0.049%
5/13/2026 Militia Capital Management LLC16,600$1.65M0.4%N/A0.048%
5/13/2026 Signature Equity Partners LLC1,195$119K0.1%N/A0.003%
5/13/2026 First Citizens Bank & Trust Co.3,355$334K0.0%-6.0%0.010%
5/13/2026 First Trust Advisors LP53,889$5.36M0.0%+111.5%0.156%
5/7/2026 Dimensional Fund Advisors LP516,679$51.36M0.0%+5.5%1.496%
5/7/2026 Swiss National Bank64,200$6.38M0.0%+0.5%0.186%
5/7/2026 Precision Wealth Strategies LLC4,357$433K0.1%N/A0.013%
5/6/2026 Catalyst Capital Advisors LLC5,355$532K0.0%-18.6%0.016%
5/6/2026 Bessemer Group Inc.45,821$4.56M0.0%+38.8%0.133%
5/6/2026 Allspring Global Investments Holdings LLC6,465$649K0.0%+11.2%0.019%
5/5/2026 Bastion Asset Management Inc.55,463$6.10M1.9%-3.7%0.161%
5/5/2026 Regency Capital Management Inc. DE21,846$2.17M1.0%N/A0.063%
5/5/2026 D.A. Davidson & CO.14,971$1.49M0.0%-2.4%0.043%
5/5/2026 Bank of New York Mellon Corp211,368$21.01M0.0%-42.7%0.612%
5/5/2026 Illinois Municipal Retirement Fund19,618$1.95M0.0%-4.5%0.057%
5/5/2026 Geneos Wealth Management Inc.30,635$3.05M0.1%N/A0.089%
5/4/2026 Emerald Mutual Fund Advisers Trust229,326$22.80M1.1%-0.3%0.664%
5/4/2026 Emerald Advisers LLC342,791$34.08M1.1%-2.4%0.993%
5/4/2026 Principal Financial Group Inc.231,433$23.01M0.0%+19.4%0.670%
5/4/2026 Teachers Retirement System of The State of Kentucky16,779$1.67M0.0%+97.0%0.049%
5/2/2026 Global Assets Advisory LLC1,870$186K0.0%N/A0.005%
5/1/2026 Fifth Third Bancorp20,802$2.07M0.0%+4,638.5%0.060%
5/1/2026 Candriam S.C.A.158,766$15.78M0.1%+45.4%0.460%
4/30/2026 First Horizon Corp429$43K0.0%-38.9%0.001%
4/30/2026 Kestra Advisory Services LLC5,272$524K0.0%-7.0%0.015%
4/30/2026 Taylor Frigon Capital Management LLC19,718$1.96M1.1%-0.5%0.057%
4/29/2026 Integrated Advisors Network LLC47,590$4.73M0.2%N/A0.138%
4/29/2026 Shelton Wealth Management LLC13,148$1.31M0.6%-1.8%0.038%
4/28/2026 Whittier Trust Co. of Nevada Inc.425$45K0.0%+95.0%0.001%
4/28/2026 Ascentis Independent Advisors299$30K0.0%N/A0.001%
4/27/2026 HB Wealth Management LLC14,843$1.48M0.0%+0.7%0.043%
4/27/2026 Private Advisor Group LLC4,721$469K0.0%N/A0.014%
4/25/2026 Strs Ohio1,700$169K0.0%-5.6%0.005%
4/24/2026 Peregrine Capital Management LLC57,184$5.69M0.2%-4.9%0.166%
4/23/2026 North Star Investment Management Corp.300$30K0.0%N/A0.001%
Your $29.97 book is free today (Ad)

Why Some Traders Skip Stocks Entirely You don't need a big account to trade options. In fact, options can give you up to 12 times the leverage of stocks — with a fraction of the capital tied up. This free guide lays it all out in plain English — from A to Z, with step-by-step examples you can follow in your own account.tc pixel

Normally $29.97. Today it's free. Grab your copy now.
4/22/2026 Pictet Asset Management Holding SA5,266$523K0.0%+8.4%0.015%
4/21/2026 Wasatch Advisors LP346,144$34.41M0.2%+4.3%1.002%
4/21/2026 Louisiana State Employees Retirement System15,200$1.51M0.0%N/A0.044%
4/21/2026 Fiduciary Alliance LLC2,016$200K0.0%N/A0.006%
4/17/2026 Total Clarity Wealth Management Inc.2,322$231K0.1%+5.1%0.007%
4/17/2026 Values First Advisors Inc.5,944$591K0.3%+3.1%0.017%
4/17/2026 Campbell Newman Asset Management Inc.12,248$1.22M0.1%+1.7%0.035%
4/16/2026 SG Americas Securities LLC6,910$687K0.0%-56.1%0.020%
4/16/2026 Strong Tower Advisory Services8,891$884K0.2%N/A0.026%
3/10/2026 Montanaro Asset Management Ltd101,939$12.40M3.5%-21.9%0.297%
3/9/2026Corient Private Wealth LLC3,084$375K0.0%+32.5%0.009%
2/24/2026 Pacer Advisors Inc.1,330$162K0.0%N/A0.004%
2/23/2026 Virtu Financial LLC26,949$3.28M0.1%+467.7%0.079%
2/19/2026Corient Private Wealth LLC3,084$375K0.0%+32.5%0.009%
2/18/2026 Summit Global Investments3,260$397K0.0%+3.6%0.010%
2/18/2026State of Tennessee Department of Treasury13,533$1.81M0.0%-9.2%0.040%
2/18/2026 EP Wealth Advisors LLC1,728$210K0.0%N/A0.005%
2/18/2026Regal Partners Ltd8,600$1.05M0.1%N/A0.025%
2/18/2026Empowered Funds LLC1,049$128K0.0%N/A0.003%
2/18/2026XTX Topco Ltd13,693$1.67M0.0%+78.8%0.040%
2/18/2026Kensington Investment Counsel LLC15,584$1.90M0.8%-9.2%0.046%
2/18/2026Wellington Management Group LLP433,321$52.71M0.0%+100.5%1.268%
2/18/2026 Polymer Capital Management US LLC11,197$1.36M0.1%N/A0.033%
2/18/2026Occudo Quantitative Strategies LP2,577$313K0.0%-70.7%0.008%
2/18/2026Man Group plc95,664$11.64M0.0%-15.8%0.280%
2/18/2026Janus Henderson Group PLC71,951$8.75M0.0%+270.5%0.211%
2/18/2026Gotham Asset Management LLC40,872$4.97M0.0%+396.2%0.120%
2/18/2026Engineers Gate Manager LP13,773$1.68M0.0%-43.0%0.040%
2/18/2026Clough Capital Partners L P7,119$866K0.1%N/A0.021%
2/18/2026 Beaconlight Capital LLC29,344$3.57M2.1%-33.6%0.086%
2/17/2026Guggenheim Capital LLC12,542$1.53M0.0%+423.5%0.037%
2/17/2026Schonfeld Strategic Advisors LLC91,065$11.08M0.0%+245.8%0.267%
2/17/2026 Brown Capital Management LLC145,918$17.75M1.5%-53.5%0.427%
2/17/2026AQR Capital Management LLC4,808$585K0.0%-44.1%0.014%
2/17/2026Braidwell LP315,341$38.36M1.2%-10.2%0.923%
2/17/2026 Cetera Investment Advisers10,771$1.31M0.0%+26.3%0.032%
2/17/2026ArrowMark Colorado Holdings LLC186,979$22.75M0.5%-40.3%0.547%
2/17/2026Stansberry Asset Management LLC2,016$245K0.0%N/A0.006%
2/17/2026Trexquant Investment LP92,481$11.25M0.1%+15.0%0.271%
2/17/2026Amundi5,257$640K0.0%-12.7%0.015%
2/17/2026 Jump Financial LLC3,400$414K0.0%-97.3%0.010%
2/17/2026Price T Rowe Associates Inc. MD569,970$69.34M0.0%+43.2%1.668%
2/17/2026Weiss Asset Management LP15,264$1.86M0.0%N/A0.045%
2/17/2026Advisory Services Network LLC1,765$215K0.0%-27.7%0.005%
2/17/2026 Public Employees Retirement System of Ohio13,572$1.65M0.0%+23.1%0.040%
2/17/2026 Russell Investments Group Ltd.6,871$836K0.0%+51.0%0.020%
2/17/2026 Maryland State Retirement & Pension System5,015$610K0.0%+2.3%0.015%
2/17/2026Kemnay Advisory Services Inc.825$100K0.0%N/A0.002%
2/17/2026State of Wisconsin Investment Board31,950$3.89M0.0%+940.7%0.094%
2/17/2026Captrust Financial Advisors1,680$204K0.0%-9.9%0.005%
Your safe trade formula (Ad)

Veteran trader Bill Poulos is giving away his Safe Trade Options Formula at no cost - a 5-part checklist built to bring structure and risk awareness to every trade you place. The formula is free to download and designed for traders who want a repeatable process before entering any position. No strings attached - just a practical framework used by disciplined options traders.tc pixel

Download the free Safe Trade Options Formula before your next trade
2/17/2026Fred Alger Management LLC30,269$3.68M0.0%-79.9%0.089%
2/17/2026&PARTNERS6,732$819K0.0%+4.1%0.020%
2/17/2026Royal Bank of Canada62,833$7.64M0.0%-68.3%0.184%
2/17/2026Mangrove Partners IM LLC1,764$215K0.0%N/A0.005%
2/17/2026Titan Wealth CI Ltd325$40K0.0%N/A0.001%
2/17/2026 Blair William & Co. IL135,889$16.53M0.0%+136.6%0.398%
2/17/2026Graham Capital Management L.P.7,785$947K0.0%-3.4%0.023%
2/17/2026Militia Capital Partners LP12,000$1.46M0.6%-7.7%0.035%
2/17/2026Opal Capital LLC1,677$204K0.1%N/A0.005%
2/16/2026Squarepoint Ops LLC110,496$13.44M0.0%-16.1%0.323%


TMDX Institutional Ownership - Frequently Asked Questions

During the previous two years, 450 institutional investors and hedge funds held shares of TransMedics Group. The most heavily invested institutionals were Vanguard Group Inc. ($438.58M), UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($121.27M), Goldman Sachs Group Inc. ($117.51M), Geode Capital Management LLC ($99.34M), Hood River Capital Management LLC ($91.11M), Two Sigma Investments LP ($71.29M), and Liontrust Investment Partners LLP ($70.19M).Learn more on TransMedics Group's institutional investors.

99.67% of TransMedics Group's stock is owned by institutional investors. Learn more on TMDX's institutional investor holdings.

Of the 405 institutional investors that purchased TransMedics Group's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC ($2.45M), Braidwell LP ($1.02M), Principal Financial Group Inc. ($437.55K), Norges Bank ($437.51K), Goldman Sachs Group Inc. ($409.07K), Dimensional Fund Advisors LP ($395.26K), and Marshall Wace LLP ($394.34K).

Institutional investors have bought a total of 7,451,983 shares in the last 24 months. This purchase volume represents approximately $773.87M in transactions.

Of the 151 institutional investors that sold TransMedics Group's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: New York State Common Retirement Fund ($2.16M), Man Group plc ($2.09M), JPMorgan Chase & Co. ($1.53M), Wellington Management Group LLP ($1.50M), Braidwell LP ($635.74K), Universal Beteiligungs und Servicegesellschaft mbH ($396.23K), and Marshall Wace LLP ($356.32K).

Institutional investors have sold a total of 11,758,324 shares in the last 24 months. This volume of shares sold represents approximately $1.50B in transactions.


Related Companies

This page (NASDAQ:TMDX) was last updated on 5/16/2026 by MarketBeat.com Staff.
From Our Partners
Trump's gold order: the announcement they won't put on the front page
On August 15, 1971, Nixon interrupted prime-time television and ended the gold standard in 15 minutes - no deb...
Reagan Gold Group | Sponsoredtc pixel
Elon's new "super startup"
Adam O'Dell - the analyst who recommended Palantir before it became the top S&P 500 performer - has identified...
Banyan Hill Publishing | Sponsoredtc pixel
CODE RED: AI Meltdown Imminent?
After correctly predicting the 2008 and 2020 stock market meltdowns, I believe this AI company is about to tri...
Paradigm Press | Sponsoredtc pixel
Your book is inside
The "Sucker's Bet" Most New Options Traders Fall For Most people who try options lose money the same way. ...
Profits Run | Sponsoredtc pixel
Secret behind near perfectly timed stock trades…?
After 20 years of professional trading, Ross Givens says this is the single most lucrative market strategy he ...
Traders Agency | Sponsoredtc pixel
Oil is settling in yuan now - here's what that means for gold
Saudi Arabia has terminated its 1974 petrodollar agreement with the United States - the deal that forced every...
Golden Portfolio | Sponsoredtc pixel
The gold strategy that works whether prices rise or fall
Former $900 million hedge fund manager Larry Benedict has developed a strategy he calls Gold Skimming - a way ...
Brownstone Research | Sponsoredtc pixel
The cat is out the bag
Almost 80,000 tech jobs vanished in the first three months of 2026. Meta cut 14,000 roles, Microsoft offered s...
Porter & Company | Sponsoredtc pixel