XT
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XTX Topco’s Moleculin Biotech MBRX Stock Holding History

XTX Topco’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
Q2 		$64K Buy
+22,942
New +$58.6K ﹤0.01% 3652
2025
Q3 		– Sell
-2,969
Closed -$22.4K – 2978
2025
Q2 		$22.4K Buy
2,969
+2,506
+541% +$51.4K ﹤0.01% 2147
2025
Q1 		$11.3K Buy
+463
New +$15.6K ﹤0.01% 2238
2021
Q3 		– Sell
-88
Closed -$121K – 900
2021
Q2 		$121K Buy
+88
New +$120K 0.04% 636

Other funds holding MBRX

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
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Rockefeller Capital Management
Rockefeller Capital Management New York $65.2B AUM 31.44% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return
Citigroup
Citigroup New York $303B AUM 53.02% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $521B AUM 51.41% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
EI
EFG International Zurich $5.46B AUM

XTX Topco's MBRX Position: Q2 2026 in Review

XTX Topco opened a new position in Moleculin Biotech (MBRX) in Q2 2026: 22,942 shares worth $64K. The stake represents ﹤0.01% of the portfolio and ranks #3652 among its holdings. This is a return to the name: XTX Topco previously reported a position in MBRX as recently as Q2 2025.

XTX Topco first reported a position in MBRX in Q2 2021 and has held it in 4 quarters since. The position peaked at $121K in Q2 2021. 18 funds tracked by Wall St. Rank hold MBRX as of Q2 2026.

  • XTX Topco held 22,942 shares of Moleculin Biotech worth $64K as of Q2 2026.
  • Moleculin Biotech was a new XTX Topco position in Q2 2026.
  • Moleculin Biotech made up ﹤0.01% of XTX Topco's portfolio in Q2 2026, its #3652 holding.
  • XTX Topco first reported a position in Moleculin Biotech in Q2 2021 and has held it in 4 quarters since.
  • XTX Topco's Moleculin Biotech position peaked at $121K in Q2 2021.
  • 18 funds tracked by Wall St. Rank held Moleculin Biotech as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.