Jane Street
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Jane Street’s Moleculin Biotech MBRX Stock Holding History

Jane Street’s Portfolio MBRX Stock Details MBRX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-1,128
Closed -$74.6K – 12413
2025
Q4 		$74.6K Buy
+1,128
New +$210K ﹤0.01% 10338
2022
Q4 		– Sell
-3
Closed -$21K – 9723
2022
Q3 		$21K Buy
+3
New +$34.7K ﹤0.01% 9188
2019
Q4 		– Sell
-1
Closed -$42K – 5477
2019
Q3 		$42K Buy
+1
New +$51.7K ﹤0.01% 4906
2017
Q3 		– Hold
0
– -$22K – 4822
2017
Q2 		– Hold
0
– – – 4253

Other funds holding MBRX

SM
Sabby Management Miami Beach, Florida $111M AUM 74.4% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
HRT Financial
HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
Rockefeller Capital Management
Rockefeller Capital Management New York $65.2B AUM 31.44% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Tower Research Capital (TRC)
Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
EFG International
EFG International Zurich $5.46B AUM

Jane Street's MBRX Position: Q1 2026 in Review

Jane Street sold out of Moleculin Biotech (MBRX) in Q1 2026, closing a stake of 1,128 shares — an estimated $74.6K sold.

Jane Street first reported a position in MBRX in Q3 2019 and held it in 3 quarters. The position peaked at $74.6K in Q4 2025. 15 funds tracked by Wall St. Rank hold MBRX as of Q1 2026.

  • Jane Street reported no remaining Moleculin Biotech position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 1,128 Moleculin Biotech shares in Q1 2026, an estimated $74.6K.
  • Jane Street first reported a position in Moleculin Biotech in Q3 2019 and held it in 3 quarters.
  • Jane Street's Moleculin Biotech position peaked at $74.6K in Q4 2025.
  • 15 funds tracked by Wall St. Rank held Moleculin Biotech as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.