William Blair & Company
RKLB icon

William Blair & Company’s Rocket Lab Corp RKLB Stock Holding History

William Blair & Company’s Portfolio RKLB Stock Details RKLB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$19.6M Sell
193,301
-8,260
-4% -$823K 0.05% 260
2026
Q1 		$12.9M Buy
201,561
+8,092
+4% +$610K 0.04% 298
2025
Q4 		$13.5M Sell
193,469
-6,849
-3% -$393K 0.04% 299
2025
Q3 		$9.6M Sell
200,318
-2,454
-1% -$111K 0.03% 366
2025
Q2 		$7.25M Buy
202,772
+14,799
+8% +$362K 0.02% 416
2025
Q1 		$3.36M Buy
187,973
+270
+0.1% +$6.47K 0.01% 584
2024
Q4 		$4.78M Sell
187,703
-2,365
-1% -$41.5K 0.01% 504
2024
Q3 		$1.85M Sell
190,068
-24,975
-12% -$152K 0.01% 730
2024
Q2 		$1.03M Sell
215,043
-43,730
-17% -$182K ﹤0.01% 865
2024
Q1 		$1.06M Sell
258,773
-88,145
-25% -$407K ﹤0.01% 843
2023
Q4 		$1.92M Sell
346,918
-95,251
-22% -$430K 0.01% 678
2023
Q3 		$1.94M Sell
442,169
-6,782
-2% -$41.2K 0.01% 662
2023
Q2 		$2.69M Buy
448,951
+4,707
+1% +$21.6K 0.01% 596
2023
Q1 		$1.79M Buy
444,244
+18,773
+4% +$84.3K 0.01% 681
2022
Q4 		$1.6M Buy
425,471
+1,000
+0.2% +$4.37K 0.01% 693
2022
Q3 		$1.73M Sell
424,471
-158
-0% -$779 0.01% 650
2022
Q2 		$1.61M Sell
424,629
-1,890
-0.4% -$11.1K 0.01% 700
2022
Q1 		$3.43M Buy
426,519
+23,677
+6% +$220K 0.01% 558
2021
Q4 		$4.95M Sell
402,842
-29,198
-7% -$401K 0.02% 479
2021
Q3 		$6.97M Buy
+432,040
New +$5.2M 0.02% 386

Other funds holding RKLB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 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
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

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

William Blair & Company reduced its Rocket Lab Corp (RKLB) stake by 4.1% in Q2 2026, selling an estimated $823K and leaving 193,301 shares worth $19.6M. The position accounts for 0.05% of the portfolio, ranked #260.

William Blair & Company first reported a position in RKLB in Q3 2021 and has held it in 20 quarters since. 1,128 funds tracked by Wall St. Rank hold RKLB as of Q2 2026.

  • William Blair & Company held 193,301 shares of Rocket Lab Corp worth $19.6M as of Q2 2026.
  • William Blair & Company sold 8,260 Rocket Lab Corp shares in Q2 2026, an estimated $823K.
  • Rocket Lab Corp made up 0.05% of William Blair & Company's portfolio in Q2 2026, its #260 holding.
  • William Blair & Company first reported a position in Rocket Lab Corp in Q3 2021 and has held it in 20 quarters since.
  • 1,128 funds tracked by Wall St. Rank held Rocket Lab Corp as of Q2 2026.

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