Simplex Trading
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Simplex Trading’s Acumen Pharmaceuticals ABOS Stock Holding History

Simplex Trading’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
Q2 		– Sell
-58,300
Closed -$138K – 9160
2026
Q1 		$138K Buy
+58,300
New +$149K ﹤0.01% 4725
2025
Q4 		– Sell
-2,000
Closed -$3K – 8350
2025
Q3 		$3K Hold
2,000
– – ﹤0.01% 8462
2025
Q2 		$2K Sell
2,000
-3,300
-62% -$3.55K ﹤0.01% 8067
2025
Q1 		$5K Buy
5,300
+2,900
+121% +$4.14K ﹤0.01% 7507
2024
Q4 		$4K Buy
2,400
+400
+20% +$963 ﹤0.01% 7692
2024
Q3 		$4K Sell
2,000
-200
-9% -$543 ﹤0.01% 7675
2024
Q2 		$5K Buy
2,200
+800
+57% +$2.55K ﹤0.01% 7819
2024
Q1 		$5K Sell
1,400
-17,700
-93% -$66.7K ﹤0.01% 7968
2023
Q4 		$73K Sell
19,100
-7,300
-28% -$21.7K ﹤0.01% 5694
2023
Q3 		$109K Buy
+26,400
New +$163K ﹤0.01% 4991
2023
Q1 		– Sell
-900
Closed -$4K – 8870
2022
Q4 		$4K Sell
900
-3,000
-77% -$20.2K ﹤0.01% 8155
2022
Q3 		$39K Sell
3,900
-3,600
-48% -$20.6K ﹤0.01% 6753
2022
Q2 		$35K Buy
+7,500
New +$28.2K ﹤0.01% 6932

Other funds holding ABOS

RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
SCV
Sands Capital Ventures Arlington, Virginia $614M AUM 19.92% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
KIA
Knollwood Investment Advisory Hunt Valley, Maryland $1.12B AUM 41.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
IC
Ikarian Capital Dallas, Texas $928M AUM 596.14% 1-Year Est. Return

Simplex Trading's ABOS Position: Q2 2026 in Review

Simplex Trading sold out of Acumen Pharmaceuticals (ABOS) in Q2 2026, closing a stake of 17,414 shares — an estimated $43K sold.

Simplex Trading first reported a position in ABOS in Q2 2022 and held it in 7 quarters. The position peaked at $82K in Q4 2023. 96 funds tracked by Wall St. Rank hold ABOS as of Q2 2026.

  • Simplex Trading reported no remaining Acumen Pharmaceuticals position as of Q2 2026 after selling out during the quarter.
  • Simplex Trading sold 17,414 Acumen Pharmaceuticals shares in Q2 2026, an estimated $43K.
  • Simplex Trading first reported a position in Acumen Pharmaceuticals in Q2 2022 and held it in 7 quarters.
  • Simplex Trading's Acumen Pharmaceuticals position peaked at $82K in Q4 2023.
  • 96 funds tracked by Wall St. Rank held Acumen Pharmaceuticals as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.