Jane Street
RKLZ

Jane Street’s Defiance Daily Target 2x Short RKLB ETF RKLZ Stock Holding History

Jane Street’s Portfolio RKLZ Stock Details RKLZ Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$774K Buy
+61,399
New +$2.5M ﹤0.01% 7081
2026
Q1 		– Sell
-405
Closed -$83.2K – 13638
2025
Q4 		$83.2K Buy
+405
New +$207K ﹤0.01% 10279

Other funds holding RKLZ

JF
Jump Financial Chicago, Illinois $12.4B AUM 62.79% 1-Year Est. Return
Optiver Holding
Optiver Holding Amsterdam, Netherlands $371B AUM 64.6% 1-Year Est. Return
HF
HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
SG
StoneX Group New York $2.48B AUM 33.54% 1-Year Est. Return
TSS
Two Sigma Securities New York $1.16B AUM 36.23% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
FTUS
Flow Traders U.S. New York $2.43B AUM 44.44% 1-Year Est. Return
IMC Chicago
IMC Chicago Chicago, Illinois $419B AUM 72.04% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return

Jane Street's RKLZ Position: Q2 2026 in Review

Jane Street opened a new position in Defiance Daily Target 2x Short RKLB ETF (RKLZ) in Q2 2026: 61,399 shares worth $774K. The stake represents ﹤0.01% of the portfolio and ranks #7081 among its holdings. This is a return to the name: Jane Street previously reported a position in RKLZ as recently as Q4 2025.

Jane Street first reported a position in RKLZ in Q4 2025 and has held it in 2 quarters since. 13 funds tracked by Wall St. Rank hold RKLZ as of Q2 2026.

  • Jane Street held 61,399 shares of Defiance Daily Target 2x Short RKLB ETF worth $774K as of Q2 2026.
  • Defiance Daily Target 2x Short RKLB ETF was a new Jane Street position in Q2 2026.
  • Defiance Daily Target 2x Short RKLB ETF made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #7081 holding.
  • Jane Street first reported a position in Defiance Daily Target 2x Short RKLB ETF in Q4 2025 and has held it in 2 quarters since.
  • 13 funds tracked by Wall St. Rank held Defiance Daily Target 2x Short RKLB ETF as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.