CenterBook Partners’s ASP Isotopes ASPI Stock Holding History

CenterBook Partners’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 Q2	–	Sell	-175,959	Closed	-$825K	–	505
2025 Q1	$825K	Sell	175,959 -1,325,085	-88%	-$6.61M	0.05%	351
2024 Q4	$6.8M	Buy	+1,501,044	New	+$7.99M	0.41%	71

Other funds holding ASPI

Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

AIC

AWM Investment Company New York $903M AUM 163.47% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

PFMOSF

Philadelphia Financial Management of San Francisco San Francisco, California $346M AUM 30.02% 1-Year Est. Return

RIM

Rovida Investment Management Grand Cayman, Cayman Islands $797M AUM 111.83% 1-Year Est. Return

BNP Paribas Asset Management Paris, France $86.1B AUM 29.11% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

TAM

Telemark Asset Management Boston, Massachusetts $1.08B AUM 70.88% 1-Year Est. Return

CenterBook Partners's ASPI Position: Q2 2025 in Review

CenterBook Partners sold out of ASP Isotopes (ASPI) in Q2 2025, closing a stake of 175,959 shares — an estimated $825K sold.

CenterBook Partners first reported a position in ASPI in Q4 2024 and held it in 2 quarters. The position peaked at $6.8M in Q4 2024. 130 funds tracked by Wall St. Rank hold ASPI as of Q2 2025.

CenterBook Partners reported no remaining ASP Isotopes position as of Q2 2025 after selling out during the quarter.
CenterBook Partners sold 175,959 ASP Isotopes shares in Q2 2025, an estimated $825K.
CenterBook Partners first reported a position in ASP Isotopes in Q4 2024 and held it in 2 quarters.
CenterBook Partners's ASP Isotopes position peaked at $6.8M in Q4 2024.
130 funds tracked by Wall St. Rank held ASP Isotopes as of Q2 2025.

Based on CenterBook Partners's 13F filing for Q2 2025, filed 12 Aug 2025.