TransMedics Group, Inc. (TMDX) Institutional Ownership

Institutions by Trading Activity

40,748,023Shares Outstanding

37,055,108Shares held by institutions

$4,035,671,812Value of institutional holdings

90.94%Institutional ownership %

3.63%Shares Changed QoQ

412No. of institutional investors

TransMedics Group, Inc. (NASDAQ:TMDX) has 411 institutional investors with active 13F positions as of December 2025.

These investors held 88.6% of outstanding shares in December 2025, down from 93.0% in September 2025.
They increased total shares held in TransMedics by 2.04% from last quarter, and the number of investors in TMDX increased 33.88% annually.
Of these 411 holders, 232 added to their stakes in TransMedics, 126 trimmed positions, and 53 made no changes.
Institutional investors collectively held 36.08Mn shares in TransMedics as of December 2025, up by 720.18K shares quarter on quarter, and down 3.29Mn shares year over year.
As of December 31, 2025, the biggest holder of TransMedics is ADIRONDACK TRUST CO at 460 shares, representing 0.0% of shares outstanding.
Business Quant data shows the 1 biggest positions in TransMedics as of December 2025 are held by ADIRONDACK TRUST CO (460).

37,055,108 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	5,395,232	63,634	1.19%	$656,329,974.00
FMR LLC	31 Dec, 2025	5,077,036	12,666	0.25%	$617,621,412.00
VANGUARD GROUP INC	31 Dec, 2025	3,605,279	-328	-0.01%	$438,582,190.00
Goldman Sachs Group Inc	31 Dec, 2025	1,931,862	1,228,284	174.58%	$235,011,012.00
State Street Corp	31 Dec, 2025	1,275,133	-4,408	-0.34%	$155,119,929.00
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	31 Dec, 2025	996,878	-72,614	-6.79%	$121,270,211.00
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	31 Dec, 2025	832,241	832,241	0.00%	$101,242,000.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	816,474	2,903	0.36%	$99,339,491.00
DRIEHAUS CAPITAL MANAGEMENT LLC	31 Dec, 2025	712,041	-26,117	-3.54%	$86,619,788.00
Hood River Capital Management LLC	31 Dec, 2025	690,357	11,920	1.76%	$83,981,929.00
Invesco Ltd.	31 Dec, 2025	684,574	298,770	77.44%	$83,278,427.00
Morgan Stanley	31 Dec, 2025	667,761	119,942	21.89%	$81,233,295.00
UBS Group AG	31 Dec, 2025	659,296	-196,767	-22.99%	$80,203,359.00
EVENTIDE ASSET MANAGEMENT, LLC	31 Dec, 2025	548,267	971	0.18%	$66,698,201.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	489,710	38,717	8.58%	$59,573,649.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	435,969	-199,425	-31.39%	$53,035,629.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	433,321	217,180	100.48%	$52,713,499.00
Jpmorgan Chase & Co	31 Dec, 2025	375,261	-409,451	-52.18%	$45,650,501.00
TWO SIGMA ADVISERS, LP	31 Dec, 2025	362,300	-61,000	-14.41%	$44,073,795.00
EMERALD ADVISERS, LLC	31 Dec, 2025	351,349	-36,239	-9.35%	$42,741,606.00

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