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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, Q1 2025

Institutional positions in TransMedics Group, Inc. as of Mar 31, 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
298
−13 vs. Q4 2024
Shares held
39.1M
+2.29M (+6.2%) vs. Q4 2024
Total value
$2.63B
+$336.1M (+14.7%) vs. Q4 2024
New holders
51
121 more added
Sold out
64
91 more reduced

4 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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 holdersQ1 2025: 298 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 heldQ1 2025: $2.63B
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, Q1 2025

Shares, value and share of portfolio for each institution holding TransMedics Group, Inc.; share changes are against Q4 2024.

Institutions holding TMDX in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Canada Pension Plan Investment Board3,500$235.5K0.00%+3,500New
Sapient Capital LLC3,408$229.3K0.00%+50+1.5%Added
Two Sigma Securities, LLC3,393$228.3K0.03%+3,393New
Wedbush Securities Inc3,349$225.0K0.01%−79−2.3%Reduced
Fiduciary Alliance LLC3,335$224.4K0.02%−625−15.8%Reduced
Ameritas Investment Partners, Inc.3,252$218.8K0.01%00.0%Unchanged
Catalyst Capital Advisors LLC3,150$211.9K0.00%−1,650−34.4%Reduced
Leonteq Securities AG3,144$210.7K0.02%+1,185+60.5%Added
Campbell & CO Investment Adviser LLC3,040$204.5K0.02%+3,040New
Farallon Capital Management, L.L.C.3,000$201.8K0.00%+3,000New
RB Capital Management, LLC2,988$201.0K0.05%+2,988New
Lindbrook Capital, LLC2,742$184.5K0.02%+1,122+69.3%Added
The PNC Financial Services Group, Inc.2,294$154.3K0.00%+278+13.8%Added
Sava Infond d.o.o.2,200$148.0K0.03%+700+46.7%Added
Jones Financial Companies LLLP2,048$140.5K0.00%−26−1.3%Reduced
Van Eck Associates Corp2,013$135.0K0.00%+16+0.8%Added
Group One Trading, L.P.1,899$127.8K0.01%−1,553−45.0%Reduced
New Age Alpha Advisors, LLC1,713$115.3K0.01%−1,129−39.7%Reduced
Bryn Mawr Trust Co1,601$107.7K0.00%00.0%Unchanged
GAMMA Investing LLC1,564$105.2K0.01%+1,324+551.7%Added
KBC Group NV1,559$105.0K0.00%00.0%Unchanged
Coldstream Capital Management Inc1,314$88.4K0.00%+1,314New
Quest Partners LLC1,288$86.7K0.01%+460+55.6%Added
Arcadia Investment Management Corp1,155$77.7K0.01%00.0%Unchanged
MAI Capital Management1,000$67.3K0.00%−21−2.1%Reduced
CWM, LLC925$62.0K0.00%+155+20.1%Added
Central Trust Co750$50.5K0.00%−692−48.0%Reduced
Hager Investment Management Services, LLC740$49.8K0.03%+205+38.3%Added
Sachetta, LLC635$42.7K0.02%00.0%Unchanged
TD Waterhouse Canada Inc.600$41.0K0.00%+175+41.2%Added
Quarry LP592$39.8K0.01%+278+88.5%Added
Federation des caisses Desjardins du Quebec590$39.7K0.00%+480+436.4%Added
Signaturefd, LLC530$35.7K0.00%+61+13.0%Added
Atlas Capital Advisors LLC500$33.6K0.00%00.0%Unchanged
Ancora Advisors, LLC500$33.6K0.00%00.0%Unchanged
Adirondack Trust Co460$30.9K0.01%00.0%Unchanged
Rakuten Securities, Inc.450$30.3K0.02%−905−66.8%Reduced
Smartleaf Asset Management LLC440$30.2K0.00%+135+44.3%Added
Tower Research Capital LLC (TRC)425$28.6K0.00%−3,934−90.3%Reduced
Newbridge Financial Services Group, Inc.400$26.9K0.01%00.0%Unchanged
Oakworth Capital, Inc.372$25.0K0.00%00.0%Unchanged
NBC Securities, Inc.378$25.0K0.00%+378New
US Bancorp339$22.8K0.00%−66−16.3%Reduced
Umb Bank N A301$20.3K0.00%+54+21.9%Added
Chilton Capital Management LLC300$20.2K0.00%00.0%Unchanged
EverSource Wealth Advisors, LLC282$19.0K0.00%+169+149.6%Added
Fifth Third Bancorp250$16.8K0.00%+103+70.1%Added
Parallel Advisors, LLC212$14.3K0.00%+14+7.1%Added
Huntington National Bank205$13.8K0.00%+4+2.0%Added
Farther Finance Advisors, LLC198$13.5K0.00%−52−20.8%Reduced
Trust Co of Vermont185$12.4K0.00%00.0%Unchanged
Covestor Ltd176$12.0K0.01%+102+137.8%Added
Clearstead Advisors, LLC172$11.6K0.00%+22+14.7%Added
Boston Private Wealth LLC168$11.3K0.00%+168New
Bessemer Group Inc157$11.0K0.00%+104+196.2%Added
Massmutual Trust Co FSB153$10.3K0.00%+88+135.4%Added
Skopos Labs, Inc.116$7.80K0.00%+96+480.0%Added
Steward Partners Investment Advisory, LLC108$7.27K0.00%+56+107.7%Added
Ameriflex Group, Inc.100$6.73K0.00%00.0%Unchanged
City State Bank100$6.73K0.00%00.0%Unchanged
SRS Capital Advisors, Inc.93$6.26K0.00%+93New
Asset Dedication, LLC92$6.19K0.00%00.0%Unchanged
Allworth Financial LP62$5.84K0.00%+34+121.4%Added
National Bank of Canada85$5.71K0.00%+48+129.7%Added
Harbor Investment Advisory, LLC74$4.98K0.00%00.0%Unchanged
Parkside Financial Bank & Trust71$4.78K0.00%+71New
Mark Sheptoff Financial Planning, LLC69$4.64K0.00%00.0%Unchanged
Rothschild Investment LLC67$4.51K0.00%+30+81.1%Added
Sunbelt Securities, Inc.65$4.37K0.00%+65New
Truvestments Capital LLC57$3.83K0.00%00.0%Unchanged
Optiver Holding B.V.47$3.16K0.00%+47New
Caitong International Asset Management Co., Ltd41$2.76K0.00%−1,855−97.8%Reduced
HighMark Wealth Management LLC40$2.69K0.00%00.0%Unchanged
Northwestern Mutual Wealth Management Co36$2.42K0.00%+36New
Sterling Capital Management LLC35$2.35K0.00%+2+6.1%Added
LRI Investments, LLC29$1.96K0.00%00.0%Unchanged
Prestige Wealth Management Group LLC23$1.55K0.00%+17+283.3%Added
First Horizon Advisors, Inc.22$1.48K0.00%−102−82.3%Reduced
Whittier Trust Co of Nevada Inc21$1.41K0.00%+21New
Farmers & Merchants Investments Inc20$1.35K0.00%00.0%Unchanged
High Note Wealth, LLC19$1.28K0.00%+9+90.0%Added
Wolff Wiese Magana LLC17$1.14K0.00%00.0%Unchanged
Bare Financial Services, Inc17$1.14K0.00%+17New
Capital Advisors, Ltd. LLC12$1.00K0.00%+1+9.1%Added
Highline Wealth Partners LLC13$8750.00%+13New
CoreCap Advisors, LLC12$8070.00%+5+71.4%Added
ORG Partners LLC10$6820.00%+10New
Stephens Consulting, LLC10$6730.00%+10New
Bogart Wealth, LLC9$6060.00%−9−50.0%Reduced
Whipplewood Advisors, LLC101$4710.00%+80+381.0%Added
Bell Investment Advisors, Inc7$4710.00%00.0%Unchanged
Silver Oak Securities, Inc5$3430.00%+5New
Assetmark, Inc4$2690.00%−6−60.0%Reduced
ZRC Wealth Management, LLC3$2020.00%00.0%Unchanged
Continuum Advisory, LLC3$2020.00%00.0%Unchanged
Abound Wealth Management2$1350.00%00.0%Unchanged
Sierra Ocean, LLC1$670.00%+1New
Hantz Financial Services, Inc.2$00.00%+2New
Proequities, Inc.0$00.00%−408−100.0%Sold out
Mackenzie Financial Corp0$00.00%−828,147−100.0%Sold out