William Blair Investment Management
PRMB

William Blair Investment Management’s Primo Brands PRMB Stock Holding History

William Blair Investment Management’s Portfolio PRMB Stock Details PRMB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$279M Sell
11,426,823
-1,629,369
-12% -$36.2M 0.84% 14
2026
Q1 		$246M Buy
13,056,192
+428,772
+3% +$8.28M 0.81% 17
2025
Q4 		$206M Buy
12,627,420
+793,036
+7% +$14.7M 0.58% 37
2025
Q3 		$262M Buy
11,834,384
+1,231,701
+12% +$31.9M 0.68% 27
2025
Q2 		$314M Sell
10,602,683
-799,329
-7% -$25.6M 0.83% 21
2025
Q1 		$405M Buy
11,402,012
+240,142
+2% +$7.84M 1.14% 12
2024
Q4 		$343M Buy
+11,161,870
New +$331M 0.84% 16

Other funds holding PRMB

ORCP
One Rock Capital Partners New York $2.84B AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
SHCM
Sachem Head Capital Management New York $4.82B AUM 73.38% 1-Year Est. Return
SC
Samlyn Capital New York $6.14B AUM 42.05% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $65.2B AUM 39.42% 1-Year Est. Return

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

William Blair Investment Management reduced its Primo Brands (PRMB) stake by 12% in Q2 2026, selling an estimated $36.2M and leaving 11,426,823 shares worth $279M. The position accounts for 0.84% of the portfolio, ranked #14.

William Blair Investment Management first reported a position in PRMB in Q4 2024 and has held it in 7 quarters since. The position peaked at $405M in Q1 2025. 381 funds tracked by Wall St. Rank hold PRMB as of Q2 2026.

  • William Blair Investment Management held 11,426,823 shares of Primo Brands worth $279M as of Q2 2026.
  • William Blair Investment Management sold 1,629,369 Primo Brands shares in Q2 2026, an estimated $36.2M.
  • Primo Brands made up 0.84% of William Blair Investment Management's portfolio in Q2 2026, its #14 holding.
  • William Blair Investment Management first reported a position in Primo Brands in Q4 2024 and has held it in 7 quarters since.
  • William Blair Investment Management's Primo Brands position peaked at $405M in Q1 2025.
  • 381 funds tracked by Wall St. Rank held Primo Brands as of Q2 2026.

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