XT
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XTX Topco’s Acumen Pharmaceuticals ABOS Stock Holding History

XTX Topco’s Portfolio ABOS Stock Details ABOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-49,563
Closed -$105K – 3775
2025
Q4 		$105K Buy
+49,563
New +$98.3K ﹤0.01% 2628
2023
Q4 		– Sell
-16,538
Closed -$68.6K – 1516
2023
Q3 		$68.6K Buy
+16,538
New +$102K 0.01% 1231

Other funds holding ABOS

RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
SCV
Sands Capital Ventures Arlington, Virginia $421M AUM 26.25% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return
KIA
Knollwood Investment Advisory Hunt Valley, Maryland $992M AUM 28.95% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
IC
Ikarian Capital Dallas, Texas $1.23B AUM 600.17% 1-Year Est. Return
Hudson Bay Capital Management
Hudson Bay Capital Management Stamford, Connecticut $29B AUM 30.2% 1-Year Est. Return

XTX Topco's ABOS Position: Q1 2026 in Review

XTX Topco sold out of Acumen Pharmaceuticals (ABOS) in Q1 2026, closing a stake of 49,563 shares — an estimated $105K sold.

XTX Topco first reported a position in ABOS in Q3 2023 and held it in 2 quarters. The position peaked at $105K in Q4 2025. 84 funds tracked by Wall St. Rank hold ABOS as of Q1 2026.

  • XTX Topco reported no remaining Acumen Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • XTX Topco sold 49,563 Acumen Pharmaceuticals shares in Q1 2026, an estimated $105K.
  • XTX Topco first reported a position in Acumen Pharmaceuticals in Q3 2023 and held it in 2 quarters.
  • XTX Topco's Acumen Pharmaceuticals position peaked at $105K in Q4 2025.
  • 84 funds tracked by Wall St. Rank held Acumen Pharmaceuticals as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.