TransMedics Group (TMDX) Institutional Ownership

$79.22 +1.61 (+2.07%)

As of 11:16 AM Eastern

Current Institutional Ownership Percentage: 99.67%
Number of Institutional Buyers (last 12 months): 290
Total Institutional Inflows (last 12 months): $628.92M

Number of Institutional Sellers (last 12 months): 149
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.

TMDX Institutional Buying and Selling by Quarter

TransMedics Group Major Shareholders & Ownership History

Export

Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
6/18/2026	Pacer Advisors Inc.	2,391	$238K	0.0%	+79.8%	0.007%
6/12/2026	Militia Capital Management LLC	21,000	$2.09M	0.5%	N/A	0.061%
5/19/2026	Kensington Investment Counsel LLC	8,291	$824K	0.4%	-46.8%	0.024%
5/19/2026	Janus Henderson Group PLC	73,488	$7.31M	0.0%	+2.1%	0.213%
5/18/2026	Amundi	6,897	$686K	0.0%	+31.2%	0.020%
5/18/2026	California State Teachers Retirement System	37,840	$3.76M	0.0%	+22.8%	0.109%
5/18/2026	Royal Bank of Canada	26,937	$2.68M	0.0%	-57.1%	0.078%
5/16/2026	The Manufacturers Life Insurance Company	15,234	$1.51M	0.0%	-2.9%	0.044%
5/16/2026	Quantinno Capital Management LP	8,059	$801K	0.0%	+197.9%	0.023%
5/14/2026	Beaconlight Capital LLC	42,478	$4.22M	2.2%	+44.8%	0.123%
Get the Latest News and Ratings for TMDX and Related Stocks Enter your email address below to receive the latest news and analysts' ratings for TransMedics Group and its competitors with MarketBeat's FREE daily newsletter.
5/14/2026	Public Employees Retirement System of Ohio	14,666	$1.46M	0.0%	+8.1%	0.042%
5/14/2026	Keebeck Wealth Management	5,175	$514K	0.1%	+12.4%	0.015%
5/14/2026	Sei Investments Co.	69,629	$6.92M	0.0%	+25.9%	0.201%
5/13/2026	Cetera Investment Advisers	17,073	$1.70M	0.0%	+58.5%	0.049%
5/13/2026	Militia Capital Management LLC	16,600	$1.65M	0.4%	N/A	0.048%
5/13/2026	Signature Equity Partners LLC	1,195	$119K	0.1%	N/A	0.003%
5/13/2026	First Citizens Bank & Trust Co.	3,355	$334K	0.0%	-6.0%	0.010%
5/13/2026	First Trust Advisors LP	53,889	$5.36M	0.0%	+111.5%	0.156%
5/7/2026	Dimensional Fund Advisors LP	516,679	$51.36M	0.0%	+5.5%	1.496%
5/7/2026	Swiss National Bank	64,200	$6.38M	0.0%	+0.5%	0.186%
5/7/2026	Precision Wealth Strategies LLC	4,357	$433K	0.1%	N/A	0.013%
5/6/2026	Catalyst Capital Advisors LLC	5,355	$532K	0.0%	-18.6%	0.016%
5/6/2026	Bessemer Group Inc.	45,821	$4.56M	0.0%	+38.8%	0.133%
5/6/2026	Allspring Global Investments Holdings LLC	6,465	$649K	0.0%	+11.2%	0.019%
5/5/2026	Bastion Asset Management Inc.	55,463	$6.10M	1.9%	-3.7%	0.161%
5/5/2026	Regency Capital Management Inc. DE	21,846	$2.17M	1.0%	N/A	0.063%
5/5/2026	D.A. Davidson & CO.	14,971	$1.49M	0.0%	-2.4%	0.043%
5/5/2026	Bank of New York Mellon Corp	211,368	$21.01M	0.0%	-42.7%	0.612%
5/5/2026	Illinois Municipal Retirement Fund	19,618	$1.95M	0.0%	-4.5%	0.057%
5/5/2026	Geneos Wealth Management Inc.	30,635	$3.05M	0.1%	N/A	0.089%
5/4/2026	Emerald Mutual Fund Advisers Trust	229,326	$22.80M	1.1%	-0.3%	0.664%
5/4/2026	Emerald Advisers LLC	342,791	$34.08M	1.1%	-2.4%	0.993%
5/4/2026	Principal Financial Group Inc.	231,433	$23.01M	0.0%	+19.4%	0.670%
5/4/2026	Teachers Retirement System of The State of Kentucky	16,779	$1.67M	0.0%	+97.0%	0.049%
5/2/2026	Global Assets Advisory LLC	1,870	$186K	0.0%	N/A	0.005%
5/1/2026	Fifth Third Bancorp	20,802	$2.07M	0.0%	+4,638.5%	0.060%
5/1/2026	Candriam S.C.A.	158,766	$15.78M	0.1%	+45.4%	0.460%
4/30/2026	First Horizon Corp	429	$43K	0.0%	-38.9%	0.001%
4/30/2026	Kestra Advisory Services LLC	5,272	$524K	0.0%	-7.0%	0.015%
4/30/2026	Taylor Frigon Capital Management LLC	19,718	$1.96M	1.1%	-0.5%	0.057%
The 1934 playbook (Ad) In 1934, a legal government maneuver transferred billions in wealth overnight. Most Americans never saw it coming — but those who did walked away wealthy.Trump holds that same legal authority today. Advisors close to the administration believe he may use it.If he does, the transfer moves fast. The window to position yourself on the right side is already closing. Get the free report now
4/29/2026	Integrated Advisors Network LLC	47,590	$4.73M	0.2%	N/A	0.138%
4/29/2026	Shelton Wealth Management LLC	13,148	$1.31M	0.6%	-1.8%	0.038%
4/28/2026	Whittier Trust Co. of Nevada Inc.	425	$45K	0.0%	+95.0%	0.001%
4/28/2026	Ascentis Independent Advisors	299	$30K	0.0%	N/A	0.001%
4/27/2026	HB Wealth Management LLC	14,843	$1.48M	0.0%	+0.7%	0.043%
4/27/2026	Private Advisor Group LLC	4,721	$469K	0.0%	N/A	0.014%
4/25/2026	Strs Ohio	1,700	$169K	0.0%	-5.6%	0.005%
4/24/2026	Peregrine Capital Management LLC	57,184	$5.69M	0.2%	-4.9%	0.166%
4/23/2026	North Star Investment Management Corp.	300	$30K	0.0%	N/A	0.001%
4/22/2026	Pictet Asset Management Holding SA	5,266	$523K	0.0%	+8.4%	0.015%
4/21/2026	Wasatch Advisors LP	346,144	$34.41M	0.2%	+4.3%	1.002%
4/21/2026	Louisiana State Employees Retirement System	15,200	$1.51M	0.0%	N/A	0.044%
4/21/2026	Fiduciary Alliance LLC	2,016	$200K	0.0%	N/A	0.006%
4/17/2026	Total Clarity Wealth Management Inc.	2,322	$231K	0.1%	+5.1%	0.007%
4/17/2026	Values First Advisors Inc.	5,944	$591K	0.3%	+3.1%	0.017%
4/17/2026	Campbell Newman Asset Management Inc.	12,248	$1.22M	0.1%	+1.7%	0.035%
4/16/2026	SG Americas Securities LLC	6,910	$687K	0.0%	-56.1%	0.020%
4/16/2026	Strong Tower Advisory Services	8,891	$884K	0.2%	N/A	0.026%
3/10/2026	Montanaro Asset Management Ltd	101,939	$12.40M	3.5%	-21.9%	0.297%
3/9/2026	Corient Private Wealth LLC	3,084	$375K	0.0%	+32.5%	0.009%
2/24/2026	Pacer Advisors Inc.	1,330	$162K	0.0%	N/A	0.004%
2/23/2026	Virtu Financial LLC	26,949	$3.28M	0.1%	+467.7%	0.079%
2/19/2026	Corient Private Wealth LLC	3,084	$375K	0.0%	+32.5%	0.009%
2/18/2026	Summit Global Investments	3,260	$397K	0.0%	+3.6%	0.010%
2/18/2026	State of Tennessee Department of Treasury	13,533	$1.81M	0.0%	-9.2%	0.040%
2/18/2026	EP Wealth Advisors LLC	1,728	$210K	0.0%	N/A	0.005%
2/18/2026	Regal Partners Ltd	8,600	$1.05M	0.1%	N/A	0.025%
2/18/2026	Empowered Funds LLC	1,049	$128K	0.0%	N/A	0.003%
2/18/2026	XTX Topco Ltd	13,693	$1.67M	0.0%	+78.8%	0.040%
2/18/2026	Kensington Investment Counsel LLC	15,584	$1.90M	0.8%	-9.2%	0.046%
2/18/2026	Wellington Management Group LLP	433,321	$52.71M	0.0%	+100.5%	1.268%
2/18/2026	Polymer Capital Management US LLC	11,197	$1.36M	0.1%	N/A	0.033%
2/18/2026	Occudo Quantitative Strategies LP	2,577	$313K	0.0%	-70.7%	0.008%
2/18/2026	Man Group plc	95,664	$11.64M	0.0%	-15.8%	0.280%
2/18/2026	Janus Henderson Group PLC	71,951	$8.75M	0.0%	+270.5%	0.211%
2/18/2026	Gotham Asset Management LLC	40,872	$4.97M	0.0%	+396.2%	0.120%
2/18/2026	Engineers Gate Manager LP	13,773	$1.68M	0.0%	-43.0%	0.040%
2/18/2026	Clough Capital Partners L P	7,119	$866K	0.1%	N/A	0.021%
2/18/2026	Beaconlight Capital LLC	29,344	$3.57M	2.1%	-33.6%	0.086%
2/17/2026	Guggenheim Capital LLC	12,542	$1.53M	0.0%	+423.5%	0.037%
2/17/2026	Schonfeld Strategic Advisors LLC	91,065	$11.08M	0.0%	+245.8%	0.267%
2/17/2026	Brown Capital Management LLC	145,918	$17.75M	1.5%	-53.5%	0.427%
2/17/2026	AQR Capital Management LLC	4,808	$585K	0.0%	-44.1%	0.014%
2/17/2026	Braidwell LP	315,341	$38.36M	1.2%	-10.2%	0.923%
2/17/2026	Cetera Investment Advisers	10,771	$1.31M	0.0%	+26.3%	0.032%
2/17/2026	ArrowMark Colorado Holdings LLC	186,979	$22.75M	0.5%	-40.3%	0.547%
2/17/2026	Stansberry Asset Management LLC	2,016	$245K	0.0%	N/A	0.006%
2/17/2026	Trexquant Investment LP	92,481	$11.25M	0.1%	+15.0%	0.271%
2/17/2026	Amundi	5,257	$640K	0.0%	-12.7%	0.015%
2/17/2026	Jump Financial LLC	3,400	$414K	0.0%	-97.3%	0.010%
Louis Navellier: My #1 AI stock for 2026 (name & ticker inside) (Ad) Louis Navellier's Stock Grader system helped him flag Nvidia before its 82,000% run and has identified the top S&P 500 stock for 12 years running—and today, he's giving away his #1 AI stock pick for 2026, free. This company's sales are up 28% year over year, it holds over 30,000 patents in wireless and video technology, and it just earned an A-rating in his proprietary Stock Grader system that has cost him $9 million to build and maintain. Get the name and ticker of Louis Navellier's #1 AI stock free
2/17/2026	Price T Rowe Associates Inc. MD	569,970	$69.34M	0.0%	+43.2%	1.668%
2/17/2026	Weiss Asset Management LP	15,264	$1.86M	0.0%	N/A	0.045%
2/17/2026	Advisory Services Network LLC	1,765	$215K	0.0%	-27.7%	0.005%
2/17/2026	Public Employees Retirement System of Ohio	13,572	$1.65M	0.0%	+23.1%	0.040%
2/17/2026	Russell Investments Group Ltd.	6,871	$836K	0.0%	+51.0%	0.020%
2/17/2026	Maryland State Retirement & Pension System	5,015	$610K	0.0%	+2.3%	0.015%
2/17/2026	Kemnay Advisory Services Inc.	825	$100K	0.0%	N/A	0.002%
2/17/2026	State of Wisconsin Investment Board	31,950	$3.89M	0.0%	+940.7%	0.094%
2/17/2026	Captrust Financial Advisors	1,680	$204K	0.0%	-9.9%	0.005%
2/17/2026	Fred Alger Management LLC	30,269	$3.68M	0.0%	-79.9%	0.089%

TMDX Institutional Ownership - Frequently Asked Questions

During the previous two years, 449 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 5,279,598 shares in the last 24 months. This purchase volume represents approximately $628.92M in transactions.

Of the 149 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 11,798,084 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 6/25/2026 by MarketBeat.com Staff.

From Our Partners

Get 30 Days of MarketBeat All Access for Free

Start Your 30-Day Trial

In-depth profiles and analysis for 20,000 public companies.
Real-time analyst ratings, insider transactions, earnings data, and more.
Our daily ratings and market update email newsletter.

Sign In
Create Account

Your Email Address:

Your Password:

Forgot your password?

Your Email Address:

Choose a Password:

By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

TransMedics Group (TMDX) Institutional Ownership

TMDX Institutional Buying and Selling by Quarter

TransMedics Group Major Shareholders & Ownership History

TMDX Institutional Ownership - Frequently Asked Questions

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools

About MarketBeat

MarketBeat Products

Popular Tools

Financial Calendars

Terms & Info

TransMedics Group (TMDX) Institutional Ownership

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

TMDX Institutional Buying and Selling by Quarter

TransMedics Group Major Shareholders & Ownership History

TMDX Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of TMDX shares?

What percentage of TransMedics Group's stock is owned by institutional investors?

Which institutional investors have been buying TransMedics Group's stock?

How much institutional buying is happening at TransMedics Group?

Which of TransMedics Group's major shareholders have been selling company stock?

How much institutional selling is happening at TransMedics Group?

MarketBeat All Access Features

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools