Jane Street
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Jane Street’s Siebert Financial SIEB Stock Holding History

Jane Street’s Portfolio SIEB Stock Details SIEB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-10,200
Closed -$29.8K – 12262
2025
Q3 		$29.8K Sell
10,200
-100
-1% -$345 ﹤0.01% 10461
2025
Q2 		$45.5K Buy
+10,300
New +$41.8K ﹤0.01% 9201

Other funds holding SIEB

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
CF
Cantor Fitzgerald New York $9.31B AUM 73.66% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Cetera Investment Advisers
Cetera Investment Advisers Schaumburg, Illinois $110B AUM 26.29% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

Jane Street's SIEB Position: Q2 2026 in Review

Jane Street opened a new position in Siebert Financial (SIEB) in Q2 2026: 55,771 shares worth $92K. The stake represents ﹤0.01% of the portfolio and ranks #10642 among its holdings. This is a return to the name: Jane Street previously reported a position in SIEB as recently as Q4 2025.

Jane Street first reported a position in SIEB in Q4 2024 and has held it in 4 quarters since. 47 funds tracked by Wall St. Rank hold SIEB as of Q2 2026.

  • Jane Street held 55,771 shares of Siebert Financial worth $92K as of Q2 2026.
  • Siebert Financial was a new Jane Street position in Q2 2026.
  • Siebert Financial made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #10642 holding.
  • Jane Street first reported a position in Siebert Financial in Q4 2024 and has held it in 4 quarters since.
  • 47 funds tracked by Wall St. Rank held Siebert Financial as of Q2 2026.

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