Mariner
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Mariner’s Transmedics TMDX Stock Holding History

Mariner’s Portfolio TMDX Stock Details TMDX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-9,022
Closed -$1.1M – 3832
2025
Q4 		$1.1M Buy
9,022
+405
+5% +$50.8K ﹤0.01% 1885
2025
Q3 		$967K Sell
8,617
-2,881
-25% -$337K ﹤0.01% 1935
2025
Q2 		$1.54M Sell
11,498
-1,728
-13% -$190K ﹤0.01% 1503
2025
Q1 		$890K Buy
13,226
+1,070
+9% +$73.6K ﹤0.01% 1774
2024
Q4 		$758K Sell
12,156
-512
-4% -$47.7K ﹤0.01% 1848
2024
Q3 		$1.99M Sell
12,668
-874
-6% -$135K ﹤0.01% 1191
2024
Q2 		$2.04M Sell
13,542
-2,917
-18% -$350K ﹤0.01% 1101
2024
Q1 		$1.22M Buy
16,459
+200
+1% +$16.5K ﹤0.01% 1383
2023
Q4 		$1.28M Sell
16,259
-5,891
-27% -$355K ﹤0.01% 1272
2023
Q3 		$1.21M Sell
22,150
-6,915
-24% -$498K ﹤0.01% 1219
2023
Q2 		$2.44M Sell
29,065
-2,947
-9% -$226K 0.01% 899
2023
Q1 		$2.42M Sell
32,012
-99
-0.3% -$6.85K 0.01% 872
2022
Q4 		$1.98M Sell
32,111
-2,370
-7% -$126K 0.01% 930
2022
Q3 		$1.44M Buy
+34,481
New +$1.5M 0.01% 904

Other funds holding TMDX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $58.4B AUM
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Mariner's TMDX Position: Q1 2026 in Review

Mariner sold out of Transmedics (TMDX) in Q1 2026, closing a stake of 9,022 shares — an estimated $1.1M sold.

Mariner first reported a position in TMDX in Q3 2022 and held it in 14 quarters. The position peaked at $2.44M in Q2 2023. 414 funds tracked by Wall St. Rank hold TMDX as of Q1 2026.

  • Mariner reported no remaining Transmedics position as of Q1 2026 after selling out during the quarter.
  • Mariner sold 9,022 Transmedics shares in Q1 2026, an estimated $1.1M.
  • Mariner first reported a position in Transmedics in Q3 2022 and held it in 14 quarters.
  • Mariner's Transmedics position peaked at $2.44M in Q2 2023.
  • 414 funds tracked by Wall St. Rank held Transmedics as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.