William Blair Investment Management
VRTX icon

William Blair Investment Management’s Vertex Pharmaceuticals VRTX Stock Holding History

William Blair Investment Management’s Portfolio VRTX Stock Details VRTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$16M Sell
32,172
-7,375
-19% -$3.27M 0.05% 274
2026
Q1 		$17.7M Sell
39,547
-188
-0.5% -$87.7K 0.06% 263
2025
Q4 		$18M Buy
39,735
+39,139
+6,567% +$16.9M 0.05% 288
2025
Q3 		$233K Sell
596
-22,012
-97% -$9.2M ﹤0.01% 405
2025
Q2 		$10.1M Sell
22,608
-56,724
-72% -$26.1M 0.03% 327
2025
Q1 		$38.5M Buy
79,332
+1,800
+2% +$839K 0.11% 168
2024
Q4 		$31.2M Buy
77,532
+983
+1% +$456K 0.08% 245
2024
Q3 		$35.6M Buy
+76,549
New +$36.8M 0.09% 194

Other funds holding VRTX

Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

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

William Blair Investment Management reduced its Vertex Pharmaceuticals (VRTX) stake by 19% in Q2 2026, selling an estimated $3.27M and leaving 32,172 shares worth $16M. The position accounts for 0.05% of the portfolio, ranked #274.

William Blair Investment Management first reported a position in VRTX in Q3 2024 and has held it in 8 quarters since. The position peaked at $38.5M in Q1 2025. 1,765 funds tracked by Wall St. Rank hold VRTX as of Q2 2026.

  • William Blair Investment Management held 32,172 shares of Vertex Pharmaceuticals worth $16M as of Q2 2026.
  • William Blair Investment Management sold 7,375 Vertex Pharmaceuticals shares in Q2 2026, an estimated $3.27M.
  • Vertex Pharmaceuticals made up 0.05% of William Blair Investment Management's portfolio in Q2 2026, its #274 holding.
  • William Blair Investment Management first reported a position in Vertex Pharmaceuticals in Q3 2024 and has held it in 8 quarters since.
  • William Blair Investment Management's Vertex Pharmaceuticals position peaked at $38.5M in Q1 2025.
  • 1,765 funds tracked by Wall St. Rank held Vertex Pharmaceuticals as of Q2 2026.

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