Mariner
RKLB icon

Mariner’s Rocket Lab Corp RKLB Stock Holding History

Mariner’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
Q1 		$10.1M Sell
157,675
-26,779
-15% -$2.02M 0.01% 742
2025
Q4 		$12.9M Buy
184,454
+29,263
+19% +$1.68M 0.02% 591
2025
Q3 		$7.44M Sell
155,191
-13,624
-8% -$618K 0.01% 748
2025
Q2 		$6.04M Buy
168,815
+5,209
+3% +$127K 0.01% 798
2025
Q1 		$2.93M Buy
163,606
+7,521
+5% +$180K ﹤0.01% 1035
2024
Q4 		$3.98M Sell
156,085
-8,823
-5% -$155K 0.01% 882
2024
Q3 		$1.6M Buy
164,908
+7,991
+5% +$48.5K ﹤0.01% 1311
2024
Q2 		$753K Buy
156,917
+33,075
+27% +$138K ﹤0.01% 1720
2024
Q1 		$509K Buy
123,842
+18,956
+18% +$87.5K ﹤0.01% 2014
2023
Q4 		$580K Buy
104,886
+57,984
+124% +$262K ﹤0.01% 1848
2023
Q3 		$205K Buy
46,902
+21,203
+83% +$129K ﹤0.01% 2483
2023
Q2 		$154K Buy
25,699
+6,301
+32% +$28.9K ﹤0.01% 2541
2023
Q1 		$78K Buy
+19,398
New +$87.1K ﹤0.01% 2614
2022
Q4 		– Sell
-16,470
Closed -$67K – 2823
2022
Q3 		$67K Buy
+16,470
New +$81.2K ﹤0.01% 2273

Other funds holding RKLB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
DE
Defiance ETFs New York $6.98B AUM

Mariner's RKLB Position: Q1 2026 in Review

Mariner reduced its Rocket Lab Corp (RKLB) stake by 15% in Q1 2026, selling an estimated $2.02M and leaving 157,675 shares worth $10.1M. The position accounts for 0.01% of the portfolio, ranked #742.

Mariner first reported a position in RKLB in Q3 2022 and has held it in 14 quarters since. The position peaked at $12.9M in Q4 2025. 872 funds tracked by Wall St. Rank hold RKLB as of Q1 2026.

  • Mariner held 157,675 shares of Rocket Lab Corp worth $10.1M as of Q1 2026.
  • Mariner sold 26,779 Rocket Lab Corp shares in Q1 2026, an estimated $2.02M.
  • Rocket Lab Corp made up 0.01% of Mariner's portfolio in Q1 2026, its #742 holding.
  • Mariner first reported a position in Rocket Lab Corp in Q3 2022 and has held it in 14 quarters since.
  • Mariner's Rocket Lab Corp position peaked at $12.9M in Q4 2025.
  • 872 funds tracked by Wall St. Rank held Rocket Lab Corp as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.