William Blair Investment Management
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William Blair Investment Management’s Madrigal Pharmaceuticals MDGL Stock Holding History

William Blair Investment Management’s Portfolio MDGL Stock Details MDGL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$174M Sell
324,123
-16,396
-5% -$8.4M 0.52% 54
2026
Q1 		$178M Sell
340,519
-13,701
-4% -$6.55M 0.59% 37
2025
Q4 		$206M Sell
354,220
-57,582
-14% -$29.4M 0.58% 38
2025
Q3 		$189M Buy
411,802
+61,513
+18% +$22.9M 0.49% 54
2025
Q2 		$106M Sell
350,289
-2,866
-0.8% -$854K 0.28% 97
2025
Q1 		$117M Sell
353,155
-18,616
-5% -$6.12M 0.33% 90
2024
Q4 		$115M Buy
+371,771
New +$105M 0.28% 107

Other funds holding MDGL

BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
ACA
Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return
PC
Paulson & Co New York $2.58B AUM 68.51% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

William Blair Investment Management's MDGL Position: Q2 2026 in Review

William Blair Investment Management reduced its Madrigal Pharmaceuticals (MDGL) stake by 4.8% in Q2 2026, selling an estimated $8.4M and leaving 324,123 shares worth $174M. The position accounts for 0.52% of the portfolio, ranked #54.

William Blair Investment Management first reported a position in MDGL in Q4 2024 and has held it in 7 quarters since. The position peaked at $206M in Q4 2025. 413 funds tracked by Wall St. Rank hold MDGL as of Q2 2026.

  • William Blair Investment Management held 324,123 shares of Madrigal Pharmaceuticals worth $174M as of Q2 2026.
  • William Blair Investment Management sold 16,396 Madrigal Pharmaceuticals shares in Q2 2026, an estimated $8.4M.
  • Madrigal Pharmaceuticals made up 0.52% of William Blair Investment Management's portfolio in Q2 2026, its #54 holding.
  • William Blair Investment Management first reported a position in Madrigal Pharmaceuticals in Q4 2024 and has held it in 7 quarters since.
  • William Blair Investment Management's Madrigal Pharmaceuticals position peaked at $206M in Q4 2025.
  • 413 funds tracked by Wall St. Rank held Madrigal Pharmaceuticals as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.