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TMDX

TransMedics Group, Inc.
$75.38 +0.79 (+1.06%) At close · Jul 15
Market Cap
$2.62B
Shares
34,560,911

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 414
Total Value: $3,535,632,585
Total Shares: 35,763,806
Showing 1–100 of 428 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Superinvestors Holding TMDX

All superinvestors →
Joel Greenblatt $3,759,686

Holder Concentration

Across 418 13F filers
Top Holder
14.9%
Jun 2023 → Mar 2026 · range 10.5% – 14.9%
of institutional value
Top 5
40.0%
Jun 2023 → Mar 2026 · range 34.0% – 44.9%
of institutional value
Top 10
52.3%
Jun 2023 → Mar 2026 · range 48.8% – 57.7%
of institutional value
HHI
534
Jun 2023 → Mar 2026 · range 378 – 540
Broadly held
Showing 100 of 428
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $526,210,024 14.88% 5,293,331
Mega FMR LLC $506,617,513 14.33% 5,096,243
Mega VANGUARD CAPITAL MANAGEMENT LLC $146,943,090 4.16% 1,478,152
Mega STATE STREET CORP $131,169,407 3.71% 1,319,479
Mega Invesco Ltd. $103,184,993 2.92% 1,037,974
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $93,397,979 2.64% 939,523
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $88,061,453 2.49% 885,841
Mega GOLDMAN SACHS GROUP INC $86,117,093 2.44% 866,282
Mega GEODE CAPITAL MANAGEMENT, LLC $83,420,397 2.36% 839,155
Mid Hood River Capital Management LLC $69,564,135 1.97% 699,770
Mega MORGAN STANLEY $69,005,447 1.95% 694,150
Mega UBS Group AG $57,736,630 1.63% 580,793
Mid EVENTIDE ASSET MANAGEMENT, LLC $54,558,593 1.54% 548,824
Mega DIMENSIONAL FUND ADVISORS LP $51,363,057 1.45% 516,679
Mega WELLINGTON MANAGEMENT GROUP LLP $48,360,279 1.37% 486,473
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $41,762,141 1.18% 420,100
Mega Capital World Investors $37,196,935 1.05% 374,177
Mega CITIGROUP INC $35,527,245 1.00% 357,381
Mega PRICE T ROWE ASSOCIATES INC /MD/ $34,463,756 0.97% 346,683
Mid EMERALD ADVISERS, LLC $34,076,853 0.96% 342,791
Mega NORTHERN TRUST CORP Bank $33,616,383 0.95% 338,159
Mid BRAIDWELL LP $32,744,759 0.93% 329,391
Mega TWO SIGMA INVESTMENTS, LP $32,322,167 0.91% 325,140
Mid FRONTIER CAPITAL MANAGEMENT CO LLC $31,858,022 0.90% 320,471
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $31,704,433 0.90% 318,926
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $31,135,212 0.88% 313,200
Mega JPMORGAN CHASE & CO $30,652,174 0.87% 308,341
Mega MILLENNIUM MANAGEMENT LLC $30,427,412 0.86% 306,080
Large BAILLIE GIFFORD & CO $30,339,334 0.86% 305,194
Mega BANK OF AMERICA CORP /DE/ Bank $29,343,444 0.83% 295,176
Mid ZEVENBERGEN CAPITAL INVESTMENTS LLC $28,483,052 0.81% 286,521
Mega WELLS FARGO & COMPANY/MN $27,218,555 0.77% 273,801
Mid ROYCE & ASSOCIATES LP $24,294,014 0.69% 244,382
Mega VANGUARD FIDUCIARY TRUST CO Bank $23,499,927 0.66% 236,394
Mega PRINCIPAL FINANCIAL GROUP INC $23,006,754 0.65% 231,433
Mid EMERALD MUTUAL FUND ADVISERS TRUST Mutual Fund $22,797,297 0.64% 229,326
Large LORD, ABBETT & CO. LLC $21,271,055 0.60% 213,973
Mega Bank of New York Mellon Corp Bank $21,012,087 0.59% 211,368
Large WASATCH ADVISORS LP $20,486,186 0.58% 308,434
Mega DEUTSCHE BANK AG\ Bank $19,427,993 0.55% 195,433
Mega BARCLAYS PLC $18,945,358 0.54% 190,578
Large BLAIR WILLIAM & CO/IL $17,299,029 0.49% 174,017
Mid ArrowMark Colorado Holdings LLC $17,005,869 0.48% 171,068
Large Candriam S.C.A. $15,782,928 0.45% 158,766
Large Man Group plc $15,747,438 0.45% 158,409
Large CONGRESS ASSET MANAGEMENT CO $15,132,734 0.43% 227,834
Mid Davidson Kempner Capital Management LP $14,553,624 0.41% 146,400
Mega BNP PARIBAS ARBITRAGE, SA $14,367,627 0.41% 144,529
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $13,308,513 0.38% 133,875
Small FirstWave Capital Management LLC $12,353,481 0.35% 124,268
Large Public Sector Pension Investment Board Pension $12,153,369 0.34% 122,255
Mega ENVESTNET ASSET MANAGEMENT INC $11,585,837 0.33% 116,546
Large ExodusPoint Capital Management, LP $11,466,446 0.32% 115,345
Mega RAYMOND JAMES FINANCIAL INC $11,435,627 0.32% 115,035
Mid OPPENHEIMER & CO INC $11,280,251 0.32% 113,472
Large Trexquant Investment LP $10,567,283 0.30% 106,300
Mega AMERIPRISE FINANCIAL INC $10,409,618 0.29% 104,714
Mid Bellevue Group AG $10,054,227 0.28% 101,139
Small BROWN CAPITAL MANAGEMENT LLC $9,737,607 0.28% 97,954
Mid NEXT CENTURY GROWTH INVESTORS LLC $9,587,597 0.27% 96,445
Mega CITADEL ADVISORS LLC $9,483,714 0.27% 95,400
Mid RENAISSANCE GROUP LLC $9,299,109 0.26% 93,543
Small Lagoda Investment Management, L.P. $8,999,587 0.25% 90,530
Mega RHUMBLINE ADVISERS $8,929,403 0.25% 89,824
Large CREDIT AGRICOLE S A $8,687,339 0.25% 87,389
Mega Legal & General Group Plc $7,828,834 0.22% 78,753
Small Montanaro Asset Management Ltd $7,827,443 0.22% 78,739
Mega Nuveen, LLC $7,795,632 0.22% 78,419
Large Ensign Peak Advisors, Inc $7,512,314 0.21% 75,569
Mega JANUS HENDERSON GROUP PLC $7,305,441 0.21% 73,488
Mega CITADEL ADVISORS LLC $7,117,756 0.20% 71,600
Large SEI INVESTMENTS CO $6,921,818 0.20% 69,629
Mega BANK OF MONTREAL /CAN/ Bank $6,895,672 0.20% 69,366
Mid Longaeva Partners L.P. $6,864,956 0.19% 69,057
Large LAZARD ASSET MANAGEMENT LLC $6,441,171 0.18% 64,794
Mega Swiss National Bank Bank $6,382,122 0.18% 64,200
Mega AMERICAN CENTURY COMPANIES INC $6,222,568 0.18% 62,595
Large PRUDENTIAL FINANCIAL INC $6,126,638 0.17% 61,630
Mega CITADEL ADVISORS LLC $6,123,755 0.17% 61,601
Small Biondo Investment Advisors, LLC $5,762,797 0.16% 57,970
Mid PEREGRINE CAPITAL MANAGEMENT LLC $5,684,661 0.16% 57,184
Small Bastion Asset Management Inc. $5,513,576 0.16% 55,463
Mega FIRST TRUST ADVISORS LP $5,357,105 0.15% 53,889
Mega JANE STREET GROUP, LLC $5,348,258 0.15% 53,800
Mid Engineers Gate Manager LP $5,231,451 0.15% 52,625
Large FEDERATED HERMES, INC. $5,108,282 0.14% 51,386
Small Integrated Advisors Network LLC $4,730,921 0.13% 47,590
Large Universal- Beteiligungs- und Servicegesellschaft mbH $4,699,607 0.13% 47,275
Large KING LUTHER CAPITAL MANAGEMENT CORP $4,680,620 0.13% 47,084
Large BESSEMER GROUP INC $4,555,064 0.13% 45,821
Mega ALLIANCEBERNSTEIN L.P. $4,251,169 0.12% 42,764
Small BEACONLIGHT CAPITAL, LLC $4,222,737 0.12% 42,478
Large TUDOR INVESTMENT CORP ET AL $3,997,971 0.11% 40,217
Large Driehaus Capital Management LLC $3,987,732 0.11% 40,114
Mid F/m Investments LLC $3,984,949 0.11% 40,086
Mega LPL Financial LLC $3,966,061 0.11% 39,896
Mega NORDEA INVESTMENT MANAGEMENT AB $3,860,089 0.11% 38,830
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $3,761,674 0.11% 37,840
Large Gotham Asset Management, LLC $3,759,686 0.11% 37,820
Mid TRILLIUM ASSET MANAGEMENT, LLC $3,719,027 0.11% 37,411
Key facts CIK 1756262 CUSIP 89377M109 13F (30d) 25 filings 25 filers Visit website Investor relations

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