Jane Street
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Jane Street’s ProShares Ultra SpaceX SPCF Stock Holding History

Jane Street’s Portfolio SPCF Stock Details SPCF Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$556K Buy
33,222
+18,987
+133% +$290K ﹤0.01% 7765
2026
Q2 		$365K Buy
+14,235
New +$381K ﹤0.01% 8757

Other funds holding SPCF

BNP Paribas Financial Markets
BNP Paribas Financial Markets Paris, France $294B AUM 47.59% 1-Year Est. Return
HRT Financial
HRT Financial New York $57.2B AUM 52.85% 1-Year Est. Return
Jump Financial
Jump Financial Chicago, Illinois $13.9B AUM 45.06% 1-Year Est. Return
Mariner
Mariner Overland Park, Kansas $100B AUM 26.06% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return
Simplex Trading
Simplex Trading Chicago, Illinois $184B AUM 51.71% 1-Year Est. Return
MAM
Morse Asset Management Darien, Connecticut $579M AUM 50.13% 1-Year Est. Return
Ameritas Advisory Services
Ameritas Advisory Services Lincoln, Nebraska $5.22B AUM 19.55% 1-Year Est. Return
SBI Securities
SBI Securities Tokyo, Japan $4.38B AUM 56.37% 1-Year Est. Return
Physician Wealth Advisors
Physician Wealth Advisors Midvale, Utah $869M AUM 17.6% 1-Year Est. Return

Jane Street's SPCF Position: Q3 2026 in Review

Jane Street increased its ProShares Ultra SpaceX (SPCF) stake by 133% in Q3 2026, buying an estimated $290K and bringing the position to 33,222 shares worth $556K. The position accounts for ﹤0.01% of the portfolio, ranked #7765.

Jane Street first reported a position in SPCF in Q2 2026 and has held it in 2 quarters since. 14 funds tracked by Wall St. Rank hold SPCF as of Q3 2026.

  • Jane Street held 33,222 shares of ProShares Ultra SpaceX worth $556K as of Q3 2026.
  • Jane Street bought 18,987 ProShares Ultra SpaceX shares in Q3 2026, an estimated $290K.
  • ProShares Ultra SpaceX made up ﹤0.01% of Jane Street's portfolio in Q3 2026, its #7765 holding.
  • Jane Street first reported a position in ProShares Ultra SpaceX in Q2 2026 and has held it in 2 quarters since.
  • 14 funds tracked by Wall St. Rank held ProShares Ultra SpaceX as of Q3 2026.

Based on Jane Street's 13F filing for Q3 2026, filed 12 Nov 2026.