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TransMedics Group (TMDX) Institutional Ownership

TransMedics Group logo
$93.60 0.00 (0.00%)
Closing price 04:00 PM Eastern
Extended Trading
$93.59 -0.01 (-0.01%)
As of 05:43 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.
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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)
255
Total
Institutional Inflows
(last 12 months)
$727.40M
Number of
Institutional Sellers
(last 12 months)
124
Total
Institutional Outflows
(last 12 months)
$529.52M
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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
8/25/2026VIRGINIA RETIREMENT SYSTEMS ET Al8,300$551K0.0%N/A0.024%
8/24/2026 California State Teachers Retirement System2,646,837$175.80M0.0%+6,894.8%7.659%
8/23/2026 HB Wealth Management LLC15,062$1M0.0%+1.5%0.044%
8/22/2026 FirstWave Capital Management LLC191,240$12.70M5.6%+53.9%0.553%
8/22/2026 Plan A Wealth LLC5,167$343K0.1%+33.9%0.015%
8/21/2026 Braidwell LP609,715$40.50M1.5%+85.1%1.764%
8/20/2026 Beaconlight Capital LLC15,406$1.02M0.4%-63.7%0.045%
8/20/2026 Headlands Technologies LLC24,599$1.63M0.2%N/A0.071%
8/20/2026 Flputnam Investment Management Co.1,155$77K0.0%N/A0.003%
8/19/2026 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC398,250$26.45M0.0%-57.6%1.152%
8/19/2026 Van ECK Associates Corp3,241$215K0.0%+56.4%0.009%
8/19/2026 Wellington Management Group LLP515,973$34.27M0.0%+6.1%1.493%
8/18/2026 RB Capital Management LLC5,081$337K0.1%N/A0.015%
8/18/2026 Empowered Funds LLC48,154$3.20M0.0%N/A0.139%
8/17/2026 Corient Private Wealth LP19,289$1.28M0.0%N/A0.056%
8/15/2026 Freestone Grove Partners LP3,537$235K0.0%N/A0.010%
8/15/2026 Odyssean LLC12,814$851K0.1%+191.9%0.037%
8/15/2026 Man Group plc11,327$752K0.0%N/A0.033%
8/15/2026 Jupiter Topco LLC15,263$1.01M0.0%N/A0.044%
8/14/2026 Ancora Advisors LLC500$33K0.0%N/A0.001%
8/14/2026 Legal & General Group Plc79,582$5.29M0.0%N/A0.230%
8/14/2026 The Manufacturers Life Insurance Company 17,159$1.14M0.0%N/A0.050%
8/14/2026 Algert Global LLC57,154$3.80M0.0%+124.6%0.165%
8/13/2026 Biondo Investment Advisors LLC44,155$2.93M0.4%N/A0.128%
8/12/2026 Emerald Investment Advisers LLC30,456$2.02M0.1%N/A0.088%
8/12/2026 EP Wealth Advisors LLC15,401$1.02M0.0%N/A0.045%
8/12/2026 Keebeck Wealth Management5,820$387K0.0%N/A0.017%
8/11/2026 Allworth Financial LP2,520$167K0.0%N/A0.007%
8/11/2026 Silvant Capital Management LLC385$26K0.0%N/A0.001%
8/11/2026 Trillium Asset Management LLC41,577$2.76M0.1%N/A0.120%
8/10/2026 Diversify Advisory Services LLC15,872$1.18M0.0%N/A0.046%
8/8/2026 Wealthfront Advisers LLC4,401$292K0.0%N/A0.013%
8/8/2026 Summit Creek Advisors LLC26,707$1.77M0.6%N/A0.077%
8/7/2026 Deutsche Bank AG217,031$14.42M0.0%N/A0.628%
8/7/2026 Persistent Asset Partners Ltd829$55K0.0%N/A0.002%
8/7/2026 OneDigital Investment Advisors LLC6,020$400K0.0%N/A0.017%
8/6/2026 Flputnam Investment Management Co.1,155$77K0.0%N/A0.003%
8/6/2026 Global Retirement Partners LLC6,773$450K0.0%N/A0.020%
8/6/2026 Bank of New York Mellon Corp193,752$12.87M0.0%N/A0.561%
8/6/2026 State of Wyoming472$31K0.0%N/A0.001%
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7/10/2026 Wasatch Advisors LP308,434$20.49M0.1%-10.9%0.892%
7/10/2026 Generali Investments Management Co LLC2,996$199K0.0%-35.1%0.009%
7/10/2026 Handelsbanken Fonder AB13,500$897K0.0%-2.9%0.039%
7/7/2026 180 Wealth Advisors LLC4,157$276K0.0%N/A0.012%
7/7/2026 GAMMA Investing LLC1,686$112K0.0%-11.5%0.005%
6/18/2026 Pacer Advisors Inc.2,391$238K0.0%+79.8%0.007%
6/12/2026 Militia Capital Management LLC21,000$2.09M0.5%N/A0.061%
5/19/2026 Kensington Investment Counsel LLC8,291$824K0.4%-46.8%0.024%
5/19/2026Janus Henderson Group PLC73,488$7.31M0.0%+2.1%0.213%
5/18/2026 Amundi6,897$686K0.0%+31.2%0.020%
5/18/2026 California State Teachers Retirement System37,840$3.76M0.0%+22.8%0.109%
5/18/2026 Royal Bank of Canada26,937$2.68M0.0%-57.1%0.078%
5/16/2026 The Manufacturers Life Insurance Company15,234$1.51M0.0%-2.9%0.044%
5/16/2026 Quantinno Capital Management LP8,059$801K0.0%+197.9%0.023%
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%
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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%
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%


TMDX Institutional Ownership - Frequently Asked Questions

During the previous two years, 437 institutional investors and hedge funds held shares of TransMedics Group. The most heavily invested institutionals were Vanguard Group Inc. ($438.58M), California State Teachers Retirement System ($175.80M), 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 396 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: California State Teachers Retirement System ($2.62M), 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), and Marshall Wace LLP ($394.34K).

Institutional investors have bought a total of 7,971,436 shares in the last 24 months. This purchase volume represents approximately $727.40M 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 4,867,409 shares in the last 24 months. This volume of shares sold represents approximately $529.52M 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 8/25/2026. New 13F filings are added each quarter as they're published.
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