William Blair & Company
SW

William Blair & Company’s Smurfit Westrock SW Stock Holding History

William Blair & Company’s Portfolio SW Stock Details SW Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$302K Buy
6,519
+455
+8% +$18.8K ﹤0.01% 1416
2026
Q1 		$242K Buy
+6,064
New +$262K ﹤0.01% 1410

Other funds holding SW

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 $3.37T AUM 44.26% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
CCM
Causeway Capital Management Los Angeles, California $9.24B AUM 21.27% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return

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

William Blair & Company increased its Smurfit Westrock (SW) stake by 7.5% in Q2 2026, buying an estimated $18.8K and bringing the position to 6,519 shares worth $302K. The position accounts for ﹤0.01% of the portfolio, ranked #1416.

William Blair & Company first reported a position in SW in Q1 2026 and has held it in 2 quarters since. 639 funds tracked by Wall St. Rank hold SW as of Q2 2026.

  • William Blair & Company held 6,519 shares of Smurfit Westrock worth $302K as of Q2 2026.
  • William Blair & Company bought 455 Smurfit Westrock shares in Q2 2026, an estimated $18.8K.
  • Smurfit Westrock made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1416 holding.
  • William Blair & Company first reported a position in Smurfit Westrock in Q1 2026 and has held it in 2 quarters since.
  • 639 funds tracked by Wall St. Rank held Smurfit Westrock as of Q2 2026.

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