TransMedics Group, Inc. (TMDX) — Institutional Holders, Q2 2026

394 institutional investment managers reported a TMDX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $2.8B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← TMDX stock profile

TMDX in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

138

Trimmed

125

Sold out

107

Biggest buyers

CITADEL ADVISORSAdded · +497,223 sh+$33.0M
BlackRockAdded · +303,218 sh+$20.1M
BRAIDWELLAdded · +280,324 sh+$18.6M
Toroso InvestmentsNew · +251,196 sh+$16.7M
CONGRESS ASSET MANAGEMENTNew · +227,834 sh+$15.1M

Biggest sellers

Invesco Ltd.Trimmed · -642,995 sh-$42.7M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMETrimmed · -541,273 sh-$36.0M
TWO SIGMA INVESTMENTSTrimmed · -316,195 sh-$21.0M
GOLDMAN SACHS GROUPTrimmed · -306,511 sh-$20.4M
PRICE T ROWE ASSOCIATESTrimmed · -300,655 sh-$20.0M

TMDX 13F holders ranked 1–100 of 394

Institutional investors reporting a position in TransMedics Group, Inc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 14,921,549 sh	14,921,549	$381.8M	<0.01%	+19.2%
2	FMR#2 · 10,714,328 sh	10,714,328	$347.0M	0.02%	+1.8%
3	VANGUARD PORTFOLIO MANAGEMENT#3 · 1,933,989 sh	1,933,989	$128.5M	<0.01%	+0.8%
4	STATE STREET#4 · 13,362,421 sh	13,362,421	$107.3M	<0.01%	+24.2%
5	VANGUARD CAPITAL MANAGEMENT#5 · 1,497,600 sh	1,497,600	$99.5M	<0.01%	+1.3%
6	WOLVERINE ASSET MANAGEMENT#6 · 69,459,000 sh	69,459,000	$75.4M	0.66%	+4.5%
7	TWO SIGMA INVESTMENTS#7 · 67,443,945 sh	67,443,945	$73.5M	0.05%	+124.3%
8	TENOR CAPITAL MANAGEMENT , L.P.#8 · 59,560,000 sh	59,560,000	$64.8M	0.91%	+24.1%
9	NOMURA ASSET MANAGEMENT INTERNATIONAL#9 · 910,495 sh	910,495	$60.5M	0.09%	+2.8%
10	GEODE CAPITAL MANAGEMENT#10 · 894,913 sh	894,913	$59.5M	<0.01%	+6.6%
11	DeepCurrents Investment Group#11 · 54,174,000 sh	54,174,000	$58.8M	1.78%	+75.8%
12	Hood River Capital Management#12 · 751,133 sh	751,133	$49.9M	0.36%	+7.3%
13	DIMENSIONAL FUND ADVISORS#13 · 610,107 sh	610,107	$40.5M	<0.01%	+18.1%
14	BRAIDWELL#14 · 609,715 sh	609,715	$40.5M	1.50%	+85.1%
15	GOLDMAN SACHS GROUP#15 · 559,771 sh	559,771	$37.2M	<0.01%	-35.4%
16	CITADEL ADVISORS#16 · 558,824 sh	558,824	$37.1M	<0.01%	+807.2%
17	EVENTIDE ASSET MANAGEMENT#17 · 548,874 sh	548,874	$36.5M	0.49%	0.0%
18	BALYASNY ASSET MANAGEMENT L.P.#18 · 33,500,000 sh	33,500,000	$36.4M	0.05%	New
19	Sculptor Capital#19 · 32,500,000 sh	32,500,000	$35.3M	0.29%	+18.2%
20	WELLINGTON MANAGEMENT GROUP LLP#20 · 515,973 sh	515,973	$34.3M	<0.01%	+6.1%
21	EMERALD ADVISERS#21 · 490,491 sh	490,491	$32.6M	0.77%	+43.1%
22	READYSTATE ASSET MANAGEMENT#22 · 30,000,000 sh	30,000,000	$32.5M	0.02%	0.0%
23	UBS Group AG#23 · 489,058 sh	489,058	$32.4M	<0.01%	-22.8%
24	CITIGROUP#24 · 3,667,066 sh	3,667,066	$29.2M	<0.01%	-59.6%
25	MORGAN STANLEY#25 · 405,112 sh	405,112	$26.9M	<0.01%	-75.4%
26	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#26 · 398,250 sh	398,250	$26.5M	<0.01%	-57.6%
27	Invesco Ltd.#27 · 394,979 sh	394,979	$26.2M	<0.01%	-87.0%
28	Capital World Investors#28 · 384,671 sh	384,671	$25.5M	<0.01%	+2.8%
29	NORTHERN#29 · 368,860 sh	368,860	$24.5M	<0.01%	+9.1%
30	CHARLES SCHWAB INVESTMENT MANAGEMENT#30 · 328,666 sh	328,666	$21.8M	<0.01%	+3.1%
31	WASATCH ADVISORS#31 · 308,434 sh	308,434	$20.5M	—	-10.9%
32	ZEVENBERGEN CAPITAL INVESTMENTS#32 · 308,391 sh	308,391	$20.5M	—	+7.6%
33	EMERALD MUTUAL FUND ADVISERS#33 · 302,074 sh	302,074	$20.1M	0.71%	+31.7%
34	D. E. Shaw#34 · 18,000,000 sh	18,000,000	$19.6M	<0.01%	New
35	BNP PARIBAS FINANCIAL MARKETS#35 · 11,514,337 sh	11,514,337	$18.7M	<0.01%	-47.7%
36	BAILLIE GIFFORD#36 · 267,935 sh	267,935	$17.8M	0.02%	-12.2%
37	WELLS FARGO & COMPANY#37 · 262,218 sh	262,218	$17.3M	<0.01%	-4.9%
38	BANK OF AMERICA#38 · 455,001 sh	455,001	$17.3M	<0.01%	-54.2%
39	SUSQUEHANNA INTERNATIONAL GROUP, LLP#39 · 255,398 sh	255,398	$17.0M	<0.01%	+90.8%
40	CAPSTONE INVESTMENT ADVISORS#40 · 15,009,652 sh	15,009,652	$16.9M	0.02%	New
41	Toroso Investments#41 · 251,196 sh	251,196	$16.7M	0.03%	New
42	MILLENNIUM MANAGEMENT#42 · 248,312 sh	248,312	$16.5M	<0.01%	-18.9%
43	Opti Capital Management#43 · 15,000,000 sh	15,000,000	$16.3M	1.00%	-57.1%
44	VANGUARD FIDUCIARY#44 · 245,680 sh	245,680	$16.3M	<0.01%	+3.9%
45	JPMORGAN CHASE#45 · 3,067,269 sh	3,067,269	$16.2M	<0.01%	+182.1%
46	PRINCIPAL FINANCIAL GROUP#46 · 240,867 sh	240,867	$16.0M	<0.01%	+4.1%
47	BARCLAYS PLC#47 · 310,615 sh	310,615	$15.9M	<0.01%	+17.8%
48	CONGRESS ASSET MANAGEMENT#48 · 227,834 sh	227,834	$15.1M	—	New
49	DEUTSCHE BANK AG\#49 · 217,031 sh	217,031	$14.4M	<0.01%	+11.1%
50	Bank of New York Mellon#50 · 193,752 sh	193,752	$12.9M	<0.01%	-8.3%
51	Point72 Asset Management, L.P.#51 · 192,594 sh	192,594	$12.8M	0.01%	New
52	FirstWave Capital Management#52 · 191,240 sh	191,240	$12.7M	5.61%	+53.9%
53	DAVIDSON KEMPNER CAPITAL MANAGEMENT#53 · 166,900 sh	166,900	$11.1M	0.13%	+14.0%
54	HRT FINANCIAL#54 · 165,106 sh	165,106	$11.0M	0.03%	+398.8%
55	CSS#55 · 10,000,000 sh	10,000,000	$10.9M	0.42%	New
56	Nuveen#56 · 4,981,310 sh	4,981,310	$10.6M	<0.01%	-10.7%
57	Nykredit A/S#57 · 9,001,719 sh	9,001,719	$10.0M	0.03%	—
58	FRONTIER CAPITAL MANAGEMENT#58 · 150,162 sh	150,162	$10.0M	0.09%	-53.1%
59	Verition Fund Management#59 · 9,000,000 sh	9,000,000	$9.8M	0.01%	New
60	PUBLIC SECTOR PENSION INVESTMENT BOARD#60 · 118,746 sh	118,746	$7.9M	0.02%	-2.9%
61	OPPENHEIMER#61 · 110,752 sh	110,752	$7.4M	—	-2.4%
62	RENAISSANCE GROUP#62 · 108,157 sh	108,157	$7.2M	0.29%	+15.6%
63	Bellevue Group AG#63 · 101,139 sh	101,139	$6.7M	0.14%	0.0%
64	Lagoda Investment Management, L.P.#64 · 97,465 sh	97,465	$6.5M	3.56%	+7.7%
65	Trexquant Investment#65 · 93,960 sh	93,960	$6.2M	0.04%	-11.6%
66	LAZARD ASSET MANAGEMENT#66 · 2,593,549 sh	2,593,549	$6.2M	<0.01%	-80.3%
67	IMC-Chicago#67 · 90,515 sh	90,515	$6.0M	<0.01%	+226.9%
68	BROWN CAPITAL MANAGEMENT#68 · 89,828 sh	89,828	$6.0M	1.19%	-8.3%
69	DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt#69 · 875,090 sh	875,090	$5.9M	<0.01%	+9.4%
70	Portolan Capital Management#70 · 82,354 sh	82,354	$5.5M	0.20%	+670.5%
71	RHUMBLINE ADVISERS#71 · 80,220 sh	80,220	$5.3M	<0.01%	-10.7%
72	AMERIPRISE FINANCIAL#72 · 79,948 sh	79,948	$5.3M	<0.01%	-23.7%
73	Legal & General Group Plc#73 · 79,582 sh	79,582	$5.3M	<0.01%	+1.1%
74	ALLIANCEBERNSTEIN L.P.#74 · 51,651 sh	51,651	$5.1M	<0.01%	+20.8%
75	Bastion Asset Management#75 · 79,452 sh	79,452	$5.1M	1.73%	+43.3%
76	ZAZOVE ASSOCIATES#76 · 4,500,000 sh	4,500,000	$4.9M	0.39%	+80.0%
77	AMERICAN CENTURY COMPANIES#77 · 70,830 sh	70,830	$4.7M	<0.01%	+13.2%
78	BANK OF MONTREAL#78 · 69,601 sh	69,601	$4.6M	<0.01%	+0.3%
79	PEREGRINE CAPITAL MANAGEMENT#79 · 67,544 sh	67,544	$4.5M	0.15%	+18.1%
80	Swiss National Bank#80 · 65,400 sh	65,400	$4.3M	<0.01%	+1.9%
81	RAYMOND JAMES FINANCIAL#81 · 64,481 sh	64,481	$4.3M	<0.01%	-43.9%
82	SEI INVESTMENTS#82 · 63,474 sh	63,474	$4.2M	<0.01%	-8.8%
83	Ensign Peak Advisors#83 · 57,381 sh	57,381	$3.8M	<0.01%	-24.1%
84	ALGERT GLOBAL#84 · 57,154 sh	57,154	$3.8M	0.04%	+124.6%
85	OSAIC#85 · 54,036 sh	54,036	$3.6M	<0.01%	+673.3%
86	ENVESTNET ASSET MANAGEMENT#86 · 52,828 sh	52,828	$3.5M	<0.01%	-54.7%
87	F/m Investments#87 · 51,906 sh	51,906	$3.4M	0.18%	+29.5%
88	OAKTREE CAPITAL MANAGEMENT#88 · 3,131,000 sh	3,131,000	$3.4M	0.05%	New
89	Empowered Funds#89 · 48,154 sh	48,154	$3.2M	0.02%	New
90	FIRST ADVISORS#90 · 48,108 sh	48,108	$3.2M	<0.01%	-10.7%
91	PRICE T ROWE ASSOCIATES#91 · 46,028 sh	46,028	$3.1M	<0.01%	-86.7%
92	BESSEMER GROUP#92 · 45,799 sh	45,799	$3.0M	<0.01%	0.0%
93	Biondo Investment Advisors#93 · 44,155 sh	44,155	$2.9M	0.36%	-23.8%
94	LPL Financial#94 · 42,725 sh	42,725	$2.8M	<0.01%	+7.1%
95	CREDIT AGRICOLE S A#95 · 42,647 sh	42,647	$2.8M	<0.01%	-51.2%
96	Calamos Advisors#96 · 2,574,000 sh	2,574,000	$2.8M	<0.01%	0.0%
97	TRILLIUM ASSET MANAGEMENT#97 · 41,577 sh	41,577	$2.8M	0.09%	+11.1%
98	NORDEA INVESTMENT MANAGEMENT AB#98 · 40,493 sh	40,493	$2.7M	<0.01%	+4.3%
99	Universal- Beteiligungs- und Servicegesellschaft mbH#99 · 39,330 sh	39,330	$2.6M	<0.01%	-16.8%
100	SG Americas Securities#100 · 24,918 sh	24,918	$2.5M	<0.01%	+260.6%

Funds that sold out of TMDX in Q2 2026 (107)

Held TMDX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held TMDX in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
ROYCE & ASSOCIATES244,382 sh	244,382	$24.3M
LORD, ABBETT213,973 sh	213,973	$21.3M
Candriam S.C.A.158,766 sh	158,766	$15.8M
NEXT CENTURY GROWTH INVESTORS96,445 sh	96,445	$9.6M
Montanaro Asset Management Ltd78,739 sh	78,739	$7.8M
Longaeva Partners L.P.69,057 sh	69,057	$6.9M
Engineers Gate Manager52,625 sh	52,625	$5.2M
FEDERATED HERMES51,386 sh	51,386	$5.1M
Integrated Advisors Network47,590 sh	47,590	$4.7M
TUDOR INVESTMENT ET AL40,217 sh	40,217	$4.0M
DRIEHAUS CAPITAL MANAGEMENT40,114 sh	40,114	$4.0M
Gotham Asset Management37,820 sh	37,820	$3.8M
HUSSMAN STRATEGIC ADVISORS31,500 sh	31,500	$3.1M
PANAGORA ASSET MANAGEMENT22,584 sh	22,584	$2.2M
Baird Financial Group21,202 sh	21,202	$2.1M
Jump Financial17,387 sh	17,387	$1.7M
Militia Capital Management16,600 sh	16,600	$1.7M
MARSHALL WACE, LLP15,646 sh	15,646	$1.6M
BLUE JEAN FINANCIAL15,273 sh	15,273	$1.5M
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO14,666 sh	14,666	$1.5M
Timothy G. Youngquist 2020 Irrevocable14,444 sh	14,444	$1.4M
SHELTON WEALTH MANAGEMENT13,148 sh	13,148	$1.3M
STEINBERGANNA WEALTH MANAGEMENT11,596 sh	11,596	$1.2M
NATIXIS ADVISORS10,220 sh	10,220	$1.0M
CANADA PENSION PLAN INVESTMENT BOARD8,500 sh	8,500	$845.0K
Kensington Investment Counsel8,291 sh	8,291	$824.2K
QUADRANT CAPITAL GROUP15,294 sh	15,294	$809.2K
POLEN CAPITAL MANAGEMENT7,422 sh	7,422	$737.8K
Squarepoint Ops7,274 sh	7,274	$723.1K
Oasis Advisors7,232 sh	7,232	$718.9K
CAPTRUST FINANCIAL ADVISORS6,969 sh	6,969	$692.8K
Harbour Capital Advisors5,807 sh	5,807	$665.8K
Havemeyer Place6,170 sh	6,170	$613.4K
Yorktown Management & Research5,800 sh	5,800	$576.6K
IEQ CAPITAL5,195 sh	5,195	$516.4K
Prosight Management5,000 sh	5,000	$497.1K
Private Advisor Group4,721 sh	4,721	$469.3K
INTRUST BANK NA4,642 sh	4,642	$461.5K
Precision Wealth Strategies4,357 sh	4,357	$433.1K
VIRTUE ASSET MANAGEMENT3,818 sh	3,818	$379.5K
Swiss Life Asset Management Ltd3,698 sh	3,698	$367.6K
HighPoint Advisor Group3,646 sh	3,646	$362.4K
nVerses Capital3,644 sh	3,644	$362.3K
EVERGREEN CAPITAL MANAGEMENT3,540 sh	3,540	$351.9K
Caitong International Asset Management , Ltd3,364 sh	3,364	$334.4K
Blueshift Asset Management3,358 sh	3,358	$333.8K
Pathstone3,238 sh	3,238	$321.9K
MASSACHUSETTS FINANCIAL SERVICES3,232 sh	3,232	$321.3K
Advyzon Investment Management3,196 sh	3,196	$317.7K
Neuberger Berman Group3,156 sh	3,156	$313.7K
Sava Infond d.o.o.3,100 sh	3,100	$308.2K
Cynosure Management3,036 sh	3,036	$301.8K
M&T BANK2,924 sh	2,924	$290.7K
Ausdal Financial Partners2,920 sh	2,920	$290.2K
Polymer Capital Management (US)2,916 sh	2,916	$289.9K
CSS2,880 sh	2,880	$286.3K
Inspire Advisors2,831 sh	2,831	$281.4K
Graham Capital Management, L.P.2,814 sh	2,814	$279.7K
GSA CAPITAL PARTNERS LLP2,745 sh	2,745	$273.0K
Cresset Asset Management2,648 sh	2,648	$263.2K
Annis Gardner Whiting Capital Advisors2,637 sh	2,637	$262.1K
PRELUDE CAPITAL MANAGEMENT2,586 sh	2,586	$257.1K
HIGHLAND CAPITAL MANAGEMENT2,512 sh	2,512	$249.7K
TRUIST FINANCIAL2,512 sh	2,512	$249.7K
TRUEFG2,500 sh	2,500	$248.5K
D. E. Shaw2,481 sh	2,481	$246.6K
ACADIAN ASSET MANAGEMENT2,451 sh	2,451	$243.0K
Clearview Wealth Management2,326 sh	2,326	$231.2K
Total Clarity Wealth Management2,322 sh	2,322	$230.8K
Caprock Group2,312 sh	2,312	$229.8K
Crossmark Global2,280 sh	2,280	$226.7K
Vident Advisory2,229 sh	2,229	$221.6K
Integrity Investment Advisors2,222 sh	2,222	$220.9K
Moors & Cabot2,077 sh	2,077	$206.5K
STANSBERRY ASSET MANAGEMENT2,016 sh	2,016	$200.4K
Penserra Capital Management2,010 sh	2,010	$199.0K
Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna1,800 sh	1,800	$178.9K
STRS OHIO1,700 sh	1,700	$169.0K
Signature Equity Partners1,195 sh	1,195	$118.8K
Morse Asset Management812 sh	812	$80.7K
RiverPark Advisors675 sh	675	$67.1K
ATLAS CAPITAL ADVISORS500 sh	500	$49.7K
Golden State Equity Partners299 sh	299	$29.7K
Bayforest Capital Ltd294 sh	294	$29.2K
Sound Income Strategies282 sh	282	$28.3K
Matrix104 sh	104	$10.0K
BROWN BROTHERS HARRIMAN80 sh	80	$8.0K
Avalon75 sh	75	$7.5K
Western Wealth Management58 sh	58	$5.8K
Truvestments Capital57 sh	57	$5.7K
Aster Capital Management (DIFC) Ltd61 sh	61	$4.1K
Root Financial Partners40 sh	40	$4.0K
MAI Capital Management33 sh	33	$3.3K
TWIN PEAKS WEALTH ADVISORS30 sh	30	$3.0K
Rachor Investment Advisory Services21 sh	21	$2.1K
Versant Capital Management19 sh	19	$1.9K
Bell Investment Advisors16 sh	16	$1.6K
TD PRIVATE CLIENT WEALTH11 sh	11	$1.1K
Torren Management11 sh	11	$1.1K
SWAN Capital8 sh	8	$795.00

And 7 smaller positions.

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.