TRANSMEDICS GROUP INC TMDX

US Healthcare Electromedical & Electrotherapeutic Apparatus
$68.86
+1.5%
52w: $62.04 – $150.42

Latest 13F among current holders filed 17 days ago (Jun 18, 2026)

Price — last 12 months

research preview data
62.04106.23150.42
Jun 20, 2025 Jul 2, 2026
Institutional holders
416
-13 QoQ
13F value
$3.63B
-19.8% QoQ
Smart-money holders
22
signal tier ≥ 2
New smart buyers
3
Q1 2026
Options barometer
1.2×
$71.6M calls / $57.8M puts

Institutional value by quarter

$2.62B
Q1 2024
$5.15B
Q2 2024
$5.80B
Q3 2024
$2.40B
Q4 2024
$2.63B
Q1 2025
$4.97B
Q2 2025
$4.21B
Q3 2025
$4.53B
Q4 2025
$3.63B
Q1 2026

Number of holders

263
Q1 2024
343
Q2 2024
379
Q3 2024
316
Q4 2024
300
Q1 2025
369
Q2 2025
388
Q3 2025
429
Q4 2025
416
Q1 2026

Who owns TMDX?

Q1 2026 filings
FundTypeSharesValue% of fundChange
BlackRock, Inc. Index provider5.3M$526.2M0.0%-1.9%
FMR LLC Long only active5.1M$506.6M0.0%+0.4%
VANGUARD PORTFOLIO MANAGEMENT LLC Diversified mechanical1.9M$190.8M0.0%
VANGUARD CAPITAL MANAGEMENT LLC Diversified mechanical1.5M$146.9M0.0%
STATE STREET CORP Index provider1.3M$131.2M0.0%+3.5%
Invesco Ltd. Index provider1.0M$103.2M0.0%+51.6%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Bank broker939.5K$93.4M0.0%-5.8%
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Diversified mechanical885.8K$88.1M0.2%+6.4%
GOLDMAN SACHS GROUP INC Bank broker866.3K$86.1M0.0%-10.3%
GEODE CAPITAL MANAGEMENT, LLC Index provider839.2K$83.4M0.0%+2.8%
Hood River Capital Management LLC Other699.8K$69.6M0.7%+1.4%
MORGAN STANLEY Bank broker694.1K$69.0M0.0%+4.0%
UBS Group AG Bank broker580.8K$57.7M0.0%-11.9%
EVENTIDE ASSET MANAGEMENT, LLC Other548.8K$54.5M0.9%+0.1%
DIMENSIONAL FUND ADVISORS LP Quant stat arb516.7K$51.4M0.0%+5.5%
WELLINGTON MANAGEMENT GROUP LLP Long only active486.5K$48.4M0.0%+12.3%
Capital World Investors Long only active374.2K$37.2M0.0%+64.5%
CITIGROUP INC Bank broker357.4K$35.5M0.0%+396.1%
PRICE T ROWE ASSOCIATES INC /MD/ Diversified mechanical346.7K$34.5M0.0%-39.2%
WASATCH ADVISORS LP Other346.1K$34.4M0.2%+4.3%
EMERALD ADVISERS, LLC Other342.8K$34.1M1.1%-2.4%
NORTHERN TRUST CORP Index provider338.2K$33.6M0.0%-0.3%
BRAIDWELL LP ★2Fundamental diversified329.4K$32.7M1.2%+4.5%
TWO SIGMA INVESTMENTS, LP Quant stat arb325.1K$32.3M0.0%-25.4%
FRONTIER CAPITAL MANAGEMENT CO LLC Other320.5K$31.9M0.3%+5.8%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Index provider318.9K$31.7M0.0%-1.3%
MILLENNIUM MANAGEMENT LLC Multistrat pod306.1K$30.4M0.0%+105.4%
BAILLIE GIFFORD & CO ★2Long only active305.2K$30.3M0.0%-3.6%
BANK OF AMERICA CORP /DE/ Bank broker295.2K$29.3M0.0%+5.7%
JPMORGAN CHASE & CO Bank broker308.3K$29.1M0.0%-17.8%
ZEVENBERGEN CAPITAL INVESTMENTS LLC ★2Fundamental diversified286.5K$28.5M0.8%+2.3%
WELLS FARGO & COMPANY/MN Bank broker273.8K$27.2M0.0%+5.9%
ROYCE & ASSOCIATES LP Other244.4K$24.3M0.2%+0.5%
VANGUARD FIDUCIARY TRUST CO Diversified mechanical236.4K$23.5M0.0%
PRINCIPAL FINANCIAL GROUP INC Diversified mechanical231.4K$23.0M0.0%+19.4%
EMERALD MUTUAL FUND ADVISERS TRUST Other229.3K$22.8M1.1%-0.3%
LORD, ABBETT & CO. LLC Other214.0K$21.3M0.1%-1.3%
Bank of New York Mellon Corp Diversified mechanical211.4K$21.0M0.0%-3.3%
DEUTSCHE BANK AG\ Bank broker195.4K$19.4M0.0%+18.8%
BARCLAYS PLC Bank broker190.6K$18.9M0.0%-4.6%
BLAIR WILLIAM & CO/IL Diversified mechanical174.0K$17.3M0.0%+28.1%
ArrowMark Colorado Holdings LLC Other171.1K$17.0M0.5%-8.5%
Candriam S.C.A. Other158.8K$15.8M0.1%+45.4%
Man Group plc Quant stat arb158.4K$15.7M0.0%+65.6%
Davidson Kempner Capital Management LP Quant stat arb146.4K$14.6M0.5%Held
BNP PARIBAS FINANCIAL MARKETS Bank broker144.5K$14.4M0.0%-31.0%
SUSQUEHANNA INTERNATIONAL GROUP, LLP Market maker133.9K$13.3M0.0%New
FirstWave Capital Management LLC ★2Fundamental concentrated124.3K$12.4M13.2%+66.7%
Public Sector Pension Investment Board Pension sovereign122.3K$12.2M0.0%+3.4%
ENVESTNET ASSET MANAGEMENT INC Wealth advisor116.5K$11.6M0.0%+169.9%

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