Ken Griffin
RBLU

Ken Griffin’s T-REX 2X Long RBLX Daily Target ETF RBLU Stock Holding History

Ken Griffin’s Portfolio RBLU Stock Details RBLU Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-2,200
Closed -$219K – 14566
2025
Q3 		$219K Buy
+2,200
New +$185K ﹤0.01% 11079

Other funds holding RBLU

Optiver Holding
Optiver Holding Amsterdam, Netherlands $289B AUM 33.63% 1-Year Est. Return
SS
SBI Securities Tokyo, Japan $4.4B AUM 74.26% 1-Year Est. Return
Simplex Trading
Simplex Trading Chicago, Illinois $149B AUM 62.07% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return

Ken Griffin's RBLU Position: Q1 2026 in Review

Ken Griffin opened a new position in T-REX 2X Long RBLX Daily Target ETF (RBLU) in Q1 2026: 11,535 shares worth $136K. The stake represents ﹤0.01% of the portfolio and ranks #11769 among its holdings.

5 funds tracked by Wall St. Rank hold RBLU as of Q1 2026.

  • Ken Griffin held 11,535 shares of T-REX 2X Long RBLX Daily Target ETF worth $136K as of Q1 2026.
  • T-REX 2X Long RBLX Daily Target ETF was a new Ken Griffin position in Q1 2026.
  • T-REX 2X Long RBLX Daily Target ETF made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #11769 holding.
  • 5 funds tracked by Wall St. Rank held T-REX 2X Long RBLX Daily Target ETF as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.