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Southport Management’s ASP Isotopes ASPI Stock Holding History

Southport Management’s Portfolio ASPI Stock Details ASPI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		$455K Buy
85,000
+55,000
+183% +$437K 1.59% 24
2025
Q3 		$289K Buy
+30,000
New +$277K 1.19% 24

Other funds holding ASPI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
RIM
Rovida Investment Management Grand Cayman, Cayman Islands $1.47B AUM 142.45% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
AIC
AWM Investment Company New York $1.15B AUM 201.65% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Southport Management's ASPI Position: Q4 2025 in Review

Southport Management increased its ASP Isotopes (ASPI) stake by 183% in Q4 2025, buying an estimated $437K and bringing the position to 85,000 shares worth $455K. The position accounts for 1.59% of the portfolio, ranked #24.

Southport Management first reported a position in ASPI in Q3 2025 and has held it in 2 quarters since. 173 funds tracked by Wall St. Rank hold ASPI as of Q4 2025.

  • Southport Management held 85,000 shares of ASP Isotopes worth $455K as of Q4 2025.
  • Southport Management bought 55,000 ASP Isotopes shares in Q4 2025, an estimated $437K.
  • ASP Isotopes made up 1.59% of Southport Management's portfolio in Q4 2025, its #24 holding.
  • Southport Management first reported a position in ASP Isotopes in Q3 2025 and has held it in 2 quarters since.
  • 173 funds tracked by Wall St. Rank held ASP Isotopes as of Q4 2025.

Based on Southport Management's 13F filing for Q4 2025, filed 13 Feb 2026.