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TransMedics Group (TMDX) Institutional Ownership

TransMedics Group logo
$83.17 +3.38 (+4.23%)
As of 12:22 PM Eastern
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Institutional Ownership Changes (13F Filings) for TransMedics Group (NASDAQ:TMDX)

Current
Institutional Ownership
Percentage
99.67%
Number of
Institutional Buyers
(last 12 months)
254
Total
Institutional Inflows
(last 12 months)
$552.62M
Number of
Institutional Sellers
(last 12 months)
124
Total
Institutional Outflows
(last 12 months)
$530.07M
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TMDX Institutional Buying and Selling by Quarter

TransMedics Group Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/23/2026Envestnet Portfolio Solutions Inc.7,691$511K0.0%+77.3%0.022%
9/9/2026WINTON GROUP Ltd18,203$1.21M0.0%+52.4%0.053%
9/9/2026Integrated Wealth Concepts LLC2,877$191K0.0%+31.3%0.008%
9/9/2026IFP Advisors Inc4,652$309K0.0%+4.8%0.013%
8/27/2026Corient Private Wealth LP19,285$1.28M0.0%+123.2%0.056%
8/26/2026Amundi6,026$400K0.0%-12.6%0.017%
8/26/2026HighTower Advisors LLC5,068$337K0.0%-59.5%0.015%
8/25/2026VIRGINIA RETIREMENT SYSTEMS ET Al8,300$551K0.0%N/A0.024%
8/23/2026HB Wealth Management LLC15,062$1M0.0%+1.5%0.044%
8/22/2026FirstWave Capital Management LLC191,240$12.70M5.6%+53.9%0.553%
8/22/2026Plan A Wealth LLC5,167$343K0.1%+33.9%0.015%
8/21/2026Braidwell LP609,715$40.50M1.5%+85.1%1.764%
8/20/2026Beaconlight Capital LLC15,406$1.02M0.4%-63.7%0.045%
8/20/2026Headlands Technologies LLC24,599$1.63M0.2%N/A0.071%
8/20/2026Flputnam Investment Management Co.1,155$77K0.0%N/A0.003%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC398,250$26.45M0.0%-57.6%1.152%
8/19/2026Van ECK Associates Corp3,241$215K0.0%+56.4%0.009%
8/19/2026Wellington Management Group LLP515,973$34.27M0.0%+6.1%1.493%
8/18/2026RB Capital Management LLC5,081$337K0.1%N/A0.015%
8/18/2026Empowered Funds LLC48,154$3.20M0.0%N/A0.139%
8/17/2026Corient Private Wealth LP19,289$1.28M0.0%N/A0.056%
8/15/2026Freestone Grove Partners LP3,537$235K0.0%N/A0.010%
8/15/2026Odyssean LLC12,814$851K0.1%+191.9%0.037%
8/15/2026Man Group plc11,327$752K0.0%N/A0.033%
8/15/2026Jupiter Topco LLC15,263$1.01M0.0%N/A0.044%
8/14/2026Ancora Advisors LLC500$33K0.0%N/A0.001%
8/14/2026Legal & General Group Plc79,582$5.29M0.0%N/A0.230%
8/14/2026The Manufacturers Life Insurance Company17,159$1.14M0.0%N/A0.050%
8/14/2026Algert Global LLC57,154$3.80M0.0%+124.6%0.165%
8/13/2026Biondo Investment Advisors LLC44,155$2.93M0.4%N/A0.128%
8/12/2026Emerald Investment Advisers LLC30,456$2.02M0.1%N/A0.088%
8/12/2026EP Wealth Advisors LLC15,401$1.02M0.0%N/A0.045%
8/12/2026Keebeck Wealth Management5,820$387K0.0%N/A0.017%
8/11/2026Allworth Financial LP2,520$167K0.0%N/A0.007%
8/11/2026Silvant Capital Management LLC385$26K0.0%N/A0.001%
8/11/2026Trillium Asset Management LLC41,577$2.76M0.1%N/A0.120%
8/10/2026Diversify Advisory Services LLC15,872$1.18M0.0%N/A0.046%
8/8/2026Wealthfront Advisers LLC4,401$292K0.0%N/A0.013%
8/8/2026Summit Creek Advisors LLC26,707$1.77M0.6%N/A0.077%
8/7/2026Deutsche Bank AG217,031$14.42M0.0%N/A0.628%
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8/7/2026Persistent Asset Partners Ltd829$55K0.0%N/A0.002%
8/7/2026OneDigital Investment Advisors LLC6,020$400K0.0%N/A0.017%
8/6/2026Flputnam Investment Management Co.1,155$77K0.0%N/A0.003%
8/6/2026Global Retirement Partners LLC6,773$450K0.0%N/A0.020%
8/6/2026Bank of New York Mellon Corp193,752$12.87M0.0%N/A0.561%
8/6/2026State of Wyoming472$31K0.0%N/A0.001%
7/10/2026Wasatch Advisors LP308,434$20.49M0.1%-10.9%0.892%
7/10/2026Generali Investments Management Co LLC2,996$199K0.0%-35.1%0.009%
7/10/2026Handelsbanken Fonder AB13,500$897K0.0%-2.9%0.039%
7/7/2026180 Wealth Advisors LLC4,157$276K0.0%N/A0.012%
7/7/2026GAMMA Investing LLC1,686$112K0.0%-11.5%0.005%
6/18/2026Pacer Advisors Inc.2,391$238K0.0%+79.8%0.007%
6/12/2026Militia Capital Management LLC21,000$2.09M0.5%N/A0.061%
5/19/2026Kensington Investment Counsel LLC8,291$824K0.4%-46.8%0.024%
5/19/2026Janus Henderson Group PLC73,488$7.31M0.0%+2.1%0.213%
5/18/2026Amundi6,897$686K0.0%+31.2%0.020%
5/18/2026California State Teachers Retirement System37,840$3.76M0.0%+22.8%0.109%
5/18/2026Royal Bank of Canada26,937$2.68M0.0%-57.1%0.078%
5/16/2026The Manufacturers Life Insurance Company15,234$1.51M0.0%-2.9%0.044%
5/16/2026Quantinno Capital Management LP8,059$801K0.0%+197.9%0.023%
5/14/2026Beaconlight Capital LLC42,478$4.22M2.2%+44.8%0.123%
5/14/2026Public Employees Retirement System of Ohio14,666$1.46M0.0%+8.1%0.042%
5/14/2026Keebeck Wealth Management5,175$514K0.1%+12.4%0.015%
5/14/2026Sei Investments Co.69,629$6.92M0.0%+25.9%0.201%
5/13/2026Cetera Investment Advisers17,073$1.70M0.0%+58.5%0.049%
5/13/2026Militia Capital Management LLC16,600$1.65M0.4%N/A0.048%
5/13/2026Signature Equity Partners LLC1,195$119K0.1%N/A0.003%
5/13/2026First Citizens Bank & Trust Co.3,355$334K0.0%-6.0%0.010%
5/13/2026First Trust Advisors LP53,889$5.36M0.0%+111.5%0.156%
5/7/2026Dimensional Fund Advisors LP516,679$51.36M0.0%+5.5%1.496%
5/7/2026Swiss National Bank64,200$6.38M0.0%+0.5%0.186%
5/7/2026Precision Wealth Strategies LLC4,357$433K0.1%N/A0.013%
5/6/2026Catalyst Capital Advisors LLC5,355$532K0.0%-18.6%0.016%
5/6/2026Bessemer Group Inc.45,821$4.56M0.0%+38.8%0.133%
5/6/2026Allspring Global Investments Holdings LLC6,465$649K0.0%+11.2%0.019%
5/5/2026Bastion Asset Management Inc.55,463$6.10M1.9%-3.7%0.161%
5/5/2026Regency Capital Management Inc. DE21,846$2.17M1.0%N/A0.063%
5/5/2026D.A. Davidson & CO.14,971$1.49M0.0%-2.4%0.043%
5/5/2026Bank of New York Mellon Corp211,368$21.01M0.0%-42.7%0.612%
5/5/2026Illinois Municipal Retirement Fund19,618$1.95M0.0%-4.5%0.057%
5/5/2026Geneos Wealth Management Inc.30,635$3.05M0.1%N/A0.089%
5/4/2026Emerald Mutual Fund Advisers Trust229,326$22.80M1.1%-0.3%0.664%
5/4/2026Emerald Advisers LLC342,791$34.08M1.1%-2.4%0.993%
5/4/2026Principal Financial Group Inc.231,433$23.01M0.0%+19.4%0.670%
5/4/2026Teachers Retirement System of The State of Kentucky16,779$1.67M0.0%+97.0%0.049%
5/2/2026Global Assets Advisory LLC1,870$186K0.0%N/A0.005%
5/1/2026Fifth Third Bancorp20,802$2.07M0.0%+4,638.5%0.060%
5/1/2026Candriam S.C.A.158,766$15.78M0.1%+45.4%0.460%
4/30/2026First Horizon Corp429$43K0.0%-38.9%0.001%
4/30/2026Kestra Advisory Services LLC5,272$524K0.0%-7.0%0.015%
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4/30/2026Taylor Frigon Capital Management LLC19,718$1.96M1.1%-0.5%0.057%
4/29/2026Integrated Advisors Network LLC47,590$4.73M0.2%N/A0.138%
4/29/2026Shelton Wealth Management LLC13,148$1.31M0.6%-1.8%0.038%
4/28/2026Whittier Trust Co. of Nevada Inc.425$45K0.0%+95.0%0.001%
4/28/2026Ascentis Independent Advisors299$30K0.0%N/A0.001%
4/27/2026HB Wealth Management LLC14,843$1.48M0.0%+0.7%0.043%
4/27/2026Private Advisor Group LLC4,721$469K0.0%N/A0.014%
4/25/2026Strs Ohio1,700$169K0.0%-5.6%0.005%
4/24/2026Peregrine Capital Management LLC57,184$5.69M0.2%-4.9%0.166%
4/23/2026North Star Investment Management Corp.300$30K0.0%N/A0.001%


TMDX Institutional Ownership - Frequently Asked Questions

During the previous two years, 438 institutional investors and hedge funds held shares of TransMedics Group. The most heavily invested institutionals were Vanguard Group Inc. ($438.58M), 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), Liontrust Investment Partners LLP ($70.19M), and Price T Rowe Associates Inc. MD ($69.34M).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 397 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 ($1.30M), Norges Bank ($437.51K), Goldman Sachs Group Inc. ($409.07K), Dimensional Fund Advisors LP ($395.26K), Marshall Wace LLP ($394.34K), and Principal Financial Group Inc. ($389.36K).

Institutional investors have bought a total of 5,361,930 shares in the last 24 months. This purchase volume represents approximately $552.62M in transactions.

Of the 124 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: Wellington Management Group LLP ($1.50M), UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($613.89K), Universal Beteiligungs und Servicegesellschaft mbH ($396.23K), Marshall Wace LLP ($356.32K), Brown Capital Management LLC ($305.45K), Royal Bank of Canada ($171.51K), and Bank of New York Mellon Corp ($157.23K).

Institutional investors have sold a total of 4,875,731 shares in the last 24 months. This volume of shares sold represents approximately $530.07M in transactions.


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Institutional ownership data for NASDAQ:TMDX is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/23/2026. New 13F filings are added each quarter as they're published.
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