Castleark Management’s Rocket Lab Corp RKLB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$931K Buy
14,490
+4,030
+39% +$304K 0.03% 227
2025
Q4
$730K Buy
+10,460
New +$600K 0.02% 241

Other funds holding RKLB

Castleark Management's RKLB Position: Q1 2026 in Review

Castleark Management increased its Rocket Lab Corp (RKLB) stake by 39% in Q1 2026, buying an estimated $304K and bringing the position to 14,490 shares worth $931K. The position accounts for 0.03% of the portfolio, ranked #227.

Castleark Management first reported a position in RKLB in Q4 2025 and has held it in 2 quarters since. 872 funds tracked by Wall St. Rank hold RKLB as of Q1 2026.

  • Castleark Management held 14,490 shares of Rocket Lab Corp worth $931K as of Q1 2026.
  • Castleark Management bought 4,030 Rocket Lab Corp shares in Q1 2026, an estimated $304K.
  • Rocket Lab Corp made up 0.03% of Castleark Management's portfolio in Q1 2026, its #227 holding.
  • Castleark Management first reported a position in Rocket Lab Corp in Q4 2025 and has held it in 2 quarters since.
  • 872 funds tracked by Wall St. Rank held Rocket Lab Corp as of Q1 2026.

Based on Castleark Management's 13F filing for Q1 2026, filed 15 May 2026.