Citadel Advisors
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Citadel Advisors’s Transmedics TMDX Stock Holding History

Citadel Advisors’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
Q2 		$27.2M Buy
409,100
+337,500
+471% +$28.6M ﹤0.01% 2210
2026
Q1 		$7.12M Sell
71,600
-12,300
-15% -$1.6M ﹤0.01% 3788
2025
Q4 		$10.2M Sell
83,900
-274,200
-77% -$34.4M ﹤0.01% 3234
2025
Q3 		$40.2M Sell
358,100
-51,800
-13% -$6.06M 0.01% 1597
2025
Q2 		$54.9M Buy
409,900
+118,700
+41% +$13M 0.01% 1172
2025
Q1 		$19.6M Buy
291,200
+54,700
+23% +$3.76M ﹤0.01% 2058
2024
Q4 		$14.7M Buy
236,500
+42,900
+22% +$3.99M ﹤0.01% 2512
2024
Q3 		$30.4M Buy
193,600
+39,600
+26% +$6.1M 0.01% 1673
2024
Q2 		$23.2M Buy
154,000
+111,000
+258% +$13.3M ﹤0.01% 1852
2024
Q1 		$3.18M Buy
43,000
+12,000
+39% +$989K ﹤0.01% 4678
2023
Q4 		$2.45M Sell
31,000
-16,600
-35% -$1M ﹤0.01% 5008
2023
Q3 		$2.61M Buy
47,600
+25,500
+115% +$1.84M ﹤0.01% 4742
2023
Q2 		$1.86M Sell
22,100
-1,800
-8% -$138K ﹤0.01% 5276
2023
Q1 		$1.81M Sell
23,900
-4,600
-16% -$318K ﹤0.01% 5579
2022
Q4 		$1.76M Sell
28,500
-8,400
-23% -$447K ﹤0.01% 5716
2022
Q3 		$1.54M Buy
36,900
+20,600
+126% +$896K ﹤0.01% 6104
2022
Q2 		$513K Buy
16,300
+3,900
+31% +$104K ﹤0.01% 8584
2022
Q1 		$334K Sell
12,400
-4,300
-26% -$77K ﹤0.01% 10342
2021
Q4 		$320K Sell
16,700
-68,900
-80% -$1.73M ﹤0.01% 10781
2021
Q3 		$2.83M Buy
85,600
+55,000
+180% +$1.68M ﹤0.01% 5508
2021
Q2 		$1.01M Buy
30,600
+3,700
+14% +$103K ﹤0.01% 8335
2021
Q1 		$1.12M Buy
+26,900
New +$828K ﹤0.01% 7839

Other funds holding TMDX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $66.6B AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
HRCM
Hood River Capital Management Palm Beach Gardens, Florida $13.8B AUM 163.97% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $2.7B AUM 88.53% 1-Year Est. Return

Citadel Advisors's TMDX Position: Q2 2026 in Review

Citadel Advisors increased its Transmedics (TMDX) stake by 807% in Q2 2026, buying an estimated $42.1M and bringing the position to 558,824 shares worth $37.1M. The position accounts for ﹤0.01% of the portfolio, ranked #1864.

Citadel Advisors first reported a position in TMDX in Q2 2019 and has held it in 25 quarters since. The position peaked at $41M in Q1 2025. 375 funds tracked by Wall St. Rank hold TMDX as of Q2 2026.

  • Citadel Advisors held 558,824 shares of Transmedics worth $37.1M as of Q2 2026.
  • Citadel Advisors bought 497,223 Transmedics shares in Q2 2026, an estimated $42.1M.
  • Transmedics made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #1864 holding.
  • Citadel Advisors first reported a position in Transmedics in Q2 2019 and has held it in 25 quarters since.
  • Citadel Advisors's Transmedics position peaked at $41M in Q1 2025.
  • 375 funds tracked by Wall St. Rank held Transmedics as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.