William Blair & Company
TMDX icon

William Blair & Company’s Transmedics TMDX Stock Holding History

William Blair & Company’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 		$1.25M Sell
18,859
-155,158
-89% -$13.1M ﹤0.01% 901
2026
Q1 		$17.3M Buy
174,017
+38,128
+28% +$4.97M 0.05% 260
2025
Q4 		$16.5M Buy
135,889
+78,446
+137% +$9.84M 0.04% 266
2025
Q3 		$6.45M Sell
57,443
-11,044
-16% -$1.29M 0.02% 460
2025
Q2 		$9.18M Sell
68,487
-6,508
-9% -$715K 0.03% 364
2025
Q1 		$5.05M Sell
74,995
-105,569
-58% -$7.26M 0.02% 480
2024
Q4 		$11.3M Buy
180,564
+44,610
+33% +$4.15M 0.03% 319
2024
Q3 		$21.3M Sell
135,954
-26,774
-16% -$4.13M 0.06% 222
2024
Q2 		$24.5M Sell
162,728
-20,796
-11% -$2.49M 0.08% 198
2024
Q1 		$13.6M Buy
183,524
+24,417
+15% +$2.01M 0.04% 286
2023
Q4 		$12.6M Buy
159,107
+152,563
+2,331% +$9.2M 0.04% 279
2023
Q3 		$358K Buy
+6,544
New +$471K ﹤0.01% 1156

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

William Blair & Company's TMDX Position: Q2 2026 in Review

William Blair & Company reduced its Transmedics (TMDX) stake by 89% in Q2 2026, selling an estimated $13.1M and leaving 18,859 shares worth $1.25M. The position accounts for ﹤0.01% of the portfolio, ranked #901.

William Blair & Company first reported a position in TMDX in Q3 2023 and has held it in 12 quarters since. The position peaked at $24.5M in Q2 2024. 374 funds tracked by Wall St. Rank hold TMDX as of Q2 2026.

  • William Blair & Company held 18,859 shares of Transmedics worth $1.25M as of Q2 2026.
  • William Blair & Company sold 155,158 Transmedics shares in Q2 2026, an estimated $13.1M.
  • Transmedics made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #901 holding.
  • William Blair & Company first reported a position in Transmedics in Q3 2023 and has held it in 12 quarters since.
  • William Blair & Company's Transmedics position peaked at $24.5M in Q2 2024.
  • 374 funds tracked by Wall St. Rank held Transmedics as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.