William Blair Investment Management
WAY

William Blair Investment Management’s Waystar Holding Corp WAY Stock Holding History

William Blair Investment Management’s Portfolio WAY Stock Details WAY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-5,282,220
Closed -$173M – 459
2025
Q4 		$173M Buy
5,282,220
+19,033
+0.4% +$678K 0.48% 50
2025
Q3 		$200M Buy
5,263,187
+23,822
+0.5% +$883K 0.52% 49
2025
Q2 		$214M Buy
5,239,365
+1,011,940
+24% +$39M 0.57% 39
2025
Q1 		$158M Buy
+4,227,425
New +$167M 0.44% 63

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BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BCI
Bain Capital Investors Boston, Massachusetts $3.27B AUM 3.23% 1-Year Est. Return
AI
Advent International Boston, Massachusetts $4.24B AUM 4.24% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
GAM
Goldentree Asset Management New York $1.69B AUM 10.69% 1-Year Est. Return