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TransMedics Group, Inc.

TMDX
Exchange
Nasdaq
Industry
Electromedical & Electrotherapeutic Apparatus
SEC CIK
0001756262

In the last 90 days, TransMedics Group, Inc. insiders filed 1 open-market purchase and 0 sales; 375 institutions reported holding it in 13F filings for Q2 2026, worth $2.31B in total; no superinvestor holds it.

13F holders, Q2 2025

Institutional positions in TransMedics Group, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
368
+73 vs. Q1 2025
Shares held
36.8M
−2.24M (−5.7%) vs. Q1 2025
Total value
$4.93B
+$2.30B (+87.6%) vs. Q1 2025
New holders
104
117 more added
Sold out
31
113 more reduced

3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting TMDX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2025: 368 institutions
Q1 2021: 107 institutionsQ2 2021: 124 institutionsQ3 2021: 120 institutionsQ4 2021: 121 institutionsQ1 2022: 110 institutionsQ2 2022: 135 institutionsQ3 2022: 178 institutionsQ4 2022: 200 institutionsQ1 2023: 225 institutionsQ2 2023: 240 institutionsQ3 2023: 222 institutionsQ4 2023: 249 institutionsQ1 2024: 262 institutionsQ2 2024: 340 institutionsQ3 2024: 374 institutionsQ4 2024: 315 institutionsQ1 2025: 298 institutionsQ2 2025: 368 institutionsQ3 2025: 388 institutionsQ4 2025: 429 institutionsQ1 2026: 416 institutionsQ2 2026: 375 institutions
Value heldQ2 2025: $4.93B
Q1 2021: $773.0MQ2 2021: $623.5MQ3 2021: $636.5MQ4 2021: $384.7MQ1 2022: $561.4MQ2 2022: $719.7MQ3 2022: $1.18BQ4 2022: $1.79BQ1 2023: $2.26BQ2 2023: $2.73BQ3 2023: $1.91BQ4 2023: $2.76BQ1 2024: $2.52BQ2 2024: $5.09BQ3 2024: $5.74BQ4 2024: $2.30BQ1 2025: $2.63BQ2 2025: $4.93BQ3 2025: $4.17BQ4 2025: $4.53BQ1 2026: $3.63BQ2 2026: $2.31B
Institutions holding TMDX and their total value by quarter
QuarterHoldersValue
Q2 2026375$2.31B
Q1 2026416$3.63B
Q4 2025429$4.53B
Q3 2025388$4.17B
Q2 2025368$4.93B
Q1 2025298$2.63B
Q4 2024315$2.30B
Q3 2024374$5.74B
Q2 2024340$5.09B
Q1 2024262$2.52B
Q4 2023249$2.76B
Q3 2023222$1.91B
Q2 2023240$2.73B
Q1 2023225$2.26B
Q4 2022200$1.79B
Q3 2022178$1.18B
Q2 2022135$719.7M
Q1 2022110$561.4M
Q4 2021121$384.7M
Q3 2021120$636.5M
Q2 2021124$623.5M
Q1 2021107$773.0M

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding TransMedics Group, Inc.; share changes are against Q1 2025.

Institutions holding TMDX in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Profund Advisors LLC1,672$224.1K0.01%+1,672New
Wealth Enhancement Advisory Services, LLC1,737$224.4K0.00%+1,737New
49 Wealth Management, LLC1,757$235.5K0.03%+1,757New
Integrated Wealth Concepts LLC1,770$237.2K0.00%+1,770New
HighPoint Advisor Group LLC1,792$240.1K0.01%+1,792New
Fiduciary Alliance LLC1,807$242.2K0.02%−1,528−45.8%Reduced
Caxton Associates LLP1,808$242.3K0.01%+1,808New
New Age Alpha Advisors, LLC1,826$244.7K0.01%+113+6.6%Added
Captrust Financial Advisors1,834$245.7K0.00%+1,834New
GAMMA Investing LLC1,882$252.2K0.02%+318+20.3%Added
Quest Partners LLC1,950$261.3K0.03%+662+51.4%Added
Hager Investment Management Services, LLC1,964$263.2K0.16%+1,224+165.4%Added
PharVision Advisers, LLC1,970$264.0K0.38%+1,970New
Venturi Wealth Management, LLC1,973$264.4K0.01%+1,973New
Sava Infond d.o.o.2,000$268.0K0.04%−200−9.1%Reduced
Phoenix Holdings Ltd.2,031$271.9K0.00%+2,031New
Cerity Partners LLC2,055$275.4K0.00%+2,055New
Mackenzie Financial Corp2,086$279.5K0.00%+2,086New
Vontobel Holding Ltd.2,100$281.4K0.00%−2,226−51.5%Reduced
JustInvest LLC2,135$286.1K0.00%+2,135New
Evergreen Capital Management LLC2,261$303.0K0.01%+2,261New
NBC Securities, Inc.2,268$303.0K0.02%+1,890+500.0%Added
Global Assets Advisory, LLC2,350$305.7K0.12%−12,550−84.2%Reduced
Guggenheim Capital LLC2,284$306.1K0.00%+2,284New
CI Private Wealth, LLC2,291$307.0K0.00%+2,291New
Jones Financial Companies LLLP2,392$314.4K0.00%+344+16.8%Added
Atria Wealth Solutions, Inc.2,442$315.6K0.01%+2,442New
Scientech Research LLC2,364$316.8K0.08%+2,364New
Crossmark Global Holdings, Inc.2,469$330.9K0.01%+2,469New
SLT Holdings LLC2,493$334.1K0.25%+2,493New
Mach-1 Financial Group, Inc.2,502$335.3K0.10%+2,502New
Foundations Investment Advisors, LLC2,563$343.5K0.01%+2,563New
Neuberger Berman Group LLC2,572$344.7K0.00%+2,572New
Xponance, Inc.2,582$346.0K0.00%+2,582New
STRS Ohio2,600$348.4K0.00%+2,600New
ISAM Funds (UK) Ltd2,770$371.2K0.08%+2,770New
Catalytic Wealth RIA, LLC2,771$371.3K0.03%+2,771New
Silver Oak Securities, Inc2,828$379.0K0.03%+2,823+56,460.0%Added
Total Clarity Wealth Management, Inc.2,879$385.8K0.11%+2,879New
Plan A Wealth LLC2,932$392.9K0.22%+2,932New
RB Capital Management, LLC2,988$400.4K0.09%00.0%Unchanged
The PNC Financial Services Group, Inc.3,035$406.7K0.00%+741+32.3%Added
State of Wisconsin Investment Board3,041$407.5K0.00%−1,893−38.4%Reduced
Sanctuary Advisors, LLC3,103$415.8K0.00%+3,103New
Catalyst Capital Advisors LLC3,150$422.1K0.01%00.0%Unchanged
Gotham Asset Management, LLC3,159$423.3K0.00%+3,159New
Jain Global LLC3,200$428.8K0.01%+3,200New
HSBC Holdings PLC3,231$432.4K0.00%−573−15.1%Reduced
Sapient Capital LLC3,258$436.6K0.01%−150−4.4%Reduced
Park Avenue Securities LLC3,322$445.0K0.00%+3,322New
Ameritas Investment Partners, Inc.3,394$454.8K0.01%+142+4.4%Added
Integrity Investment Advisors, LLC3,422$458.6K0.35%+3,422New
Wedbush Securities Inc3,428$459.0K0.02%+79+2.4%Added
Public Employees Retirement Association of Colorado3,558$477.0K0.00%−168−4.5%Reduced
Tower Research Capital LLC (TRC)3,590$481.1K0.01%+3,165+744.7%Added
Canada Pension Plan Investment Board3,600$482.4K0.00%+100+2.9%Added
Sandhill Capital Partners LLC3,627$486.1K0.03%00.0%Unchanged
First Citizens Bank & Trust Co3,725$499.2K0.01%+3,725New
Private Advisor Group, LLC3,725$499.2K0.00%+3,725New
SG Americas Securities, LLC3,938$528.0K0.00%−10,188−72.1%Reduced
Sugar Maple Asset Management, LLC4,000$536.0K0.42%−7,000−63.6%Reduced
CIBC World Markets Corp4,097$549.0K0.00%−3,179−43.7%Reduced
Envestnet Portfolio Solutions, Inc.4,171$559.0K0.00%+4,171New
Mutual of America Capital Management LLC4,346$582.4K0.01%−542−11.1%Reduced
Pictet Asset Management Holding SA4,476$599.8K0.00%+42+0.9%Added
Advisors Preferred, LLC4,748$617.7K0.10%+4,748New
IFP Advisors, Inc4,613$621.9K0.02%−1,223−21.0%Reduced
Pitcairn Co4,812$644.9K0.04%−906−15.8%Reduced
Teacher Retirement System of Texas4,867$652.2K0.00%−38−0.8%Reduced
Occudo Quantitative Strategies LP4,911$658.1K0.07%+4,911New
AQR Capital Management LLC4,968$665.8K0.00%+4,968New
Spire Wealth Management5,068$679.2K0.02%+5,068New
Two Sigma Securities, LLC5,257$704.5K0.09%+1,864+54.9%Added
Amundi5,526$705.6K0.00%+5,526New
Bank Julius Baer & Co. Ltd, Zurich5,452$730.7K0.00%−578−9.6%Reduced
SBI Securities Co., Ltd.5,487$735.3K0.02%+1,803+48.9%Added
Intrust Bank NA5,577$747.4K0.07%+5,577New
Centiva Capital, LP5,627$754.1K0.05%+5,627New
Harbour Capital Advisors, LLC5,962$761.3K0.16%−100−1.6%Reduced
Dark Forest Capital Management LP5,709$765.1K0.03%+5,709New
Kestra Advisory Services, LLC5,981$801.5K0.00%+1,430+31.4%Added
Values First Advisors, Inc.6,126$821.0K0.45%+489+8.7%Added
Bayesian Capital Management, LP6,200$830.9K0.13%−5,655−47.7%Reduced
Cetera Investment Advisers6,325$847.6K0.00%+2,292+56.8%Added
Abundance Wealth Counselors6,326$848.0K0.16%−421−6.2%Reduced
Resources Investment Advisors, LLC.6,559$879.0K0.01%+570+9.5%Added
Wiley Bros.-Aintree Capital, LLC6,584$882.3K0.01%−462−6.6%Reduced
KLP Kapitalforvaltning AS6,600$884.5K0.00%+200+3.1%Added
Legato Capital Management LLC6,660$892.5K0.11%+1,730+35.1%Added
Gilder Gagnon Howe & Co LLC6,775$907.9K0.01%+916+15.6%Added
Janney Montgomery Scott LLC6,992$937.0K0.00%−1,807−20.5%Reduced
Options Solutions, LLC7,072$947.7K0.34%+7,072New
Cornerstone Wealth Management, LLC7,212$966.5K0.06%+965+15.4%Added
Squarepoint Ops LLC7,307$979.2K0.00%−61,802−89.4%Reduced
Sit Investment Associates Inc7,380$989.0K0.02%00.0%Unchanged
Henshaw Capital LLC7,443$997.4K0.04%00.0%Unchanged
Police & Firemen's Retirement System of New Jersey7,524$1.01M0.01%+285+3.9%Added
ProShare Advisors LLC7,601$1.02M0.00%−309−3.9%Reduced
Quadrant Capital Group LLC7,612$1.02M0.04%+184+2.5%Added
Oregon Public Employees Retirement Fund7,781$1.04M0.02%+98+1.3%Added