SEI Investments
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SEI Investments’s Acumen Pharmaceuticals ABOS Stock Holding History

SEI Investments’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 		$27.3K Buy
+11,564
New +$29.5K ﹤0.01% 3207
2025
Q2 		– Sell
-21,782
Closed -$24K – 2784
2025
Q1 		$24K Hold
21,782
– – ﹤0.01% 2732
2024
Q4 		$37.5K Hold
21,782
– – ﹤0.01% 2688
2024
Q3 		$54K Buy
+21,782
New +$59.1K ﹤0.01% 2628

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

SEI Investments's ABOS Position: Q1 2026 in Review

SEI Investments opened a new position in Acumen Pharmaceuticals (ABOS) in Q1 2026: 11,564 shares worth $27.3K. The stake represents ﹤0.01% of the portfolio and ranks #3207 among its holdings. This is a return to the name: SEI Investments previously reported a position in ABOS as recently as Q1 2025.

SEI Investments first reported a position in ABOS in Q3 2024 and has held it in 4 quarters since. The position peaked at $54K in Q3 2024. 84 funds tracked by Wall St. Rank hold ABOS as of Q1 2026.

  • SEI Investments held 11,564 shares of Acumen Pharmaceuticals worth $27.3K as of Q1 2026.
  • Acumen Pharmaceuticals was a new SEI Investments position in Q1 2026.
  • Acumen Pharmaceuticals made up ﹤0.01% of SEI Investments's portfolio in Q1 2026, its #3207 holding.
  • SEI Investments first reported a position in Acumen Pharmaceuticals in Q3 2024 and has held it in 4 quarters since.
  • SEI Investments's Acumen Pharmaceuticals position peaked at $54K in Q3 2024.
  • 84 funds tracked by Wall St. Rank held Acumen Pharmaceuticals as of Q1 2026.

Based on SEI Investments's 13F filing for Q1 2026, filed 13 May 2026.