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Weiss Asset Management LP

CIK:0001357550
Hedge Fund
$10B AUM
409 holdings
Boston, MA, United States
Founded:2005
80 employees
Latest filing:Jun 30, 2025

Weiss Asset Management LP is a private investment firm based in Boston, Massachusetts, established as a Delaware limited partnership. The firm is led by Andrew M. Weiss, Ph.D. and acts as investment manager to multiple private investment partnerships. It primarily serves institutional investors and high-net-worth clients through its global investment strategies spanning equities, fixed income, and alternative asset classes. Although the exact founding year is not available, the firm's regulatory filings suggest it has operated since at least the mid-2000s. Employee count is not publicly stated.

Investment Strategy

Weiss Asset Management LP focuses on quantitative and value-driven strategies across global developed and emerging markets, often identifying inefficiencies or mispricings through rigorous research and modeling. The firm leverages both systematic and discretionary investment approaches targeting a diverse range of asset classes, with risk management and capital preservation as central pillars of its philosophy.

Top Buys
N
NVDANVIDIA CORPORATION
+$582.3M
M
MSTRMICROSTRATEGY INC
+$542.3M
I
IBITISHARES BITCOIN TRUST ETF
+$342.8M
C
COINCOINBASE GLOBAL INC
+$190.1M
S
SMCISUPER MICRO COMPUTER INC
+$105.4M
Top Sells
I
ITCIINTRA-CELLULAR THERAPIES INC
-$216.4M
T
TSLATESLA INC
-$113.3M
A
AMEAMETEK INC
-$87.3M
B
BKNGBOOKING HOLDINGS INC
-$57.0M
C
CHXCHAMPIONX CORPORATION
-$38.7M

Top Holdings

N
NVDANVIDIA CORPORATION
+10.7%$923.2M
M
MSTRMICROSTRATEGY INC
+10.3%$892.9M
I
IBITISHARES BITCOIN TRUST ETF
+5.1%$441.8M
C
COINCOINBASE GLOBAL INC
+2.5%$214.8M
S
SMCISUPER MICRO COMPUTER INC
+1.9%$164.9M

Equity Positions (347)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
N
NVDA
NVIDIA CORPORATION10.66%$923.2M5,843,559$131.94$157.99+$582.3M
M
MSTR
MICROSTRATEGY INC10.31%$892.9M2,208,879$340.45$404.23+$542.3M
I
IBIT
ISHARES BITCOIN TRUST ETF5.10%$441.8M7,217,838$58.67$61.21+$342.8M
C
COIN
COINBASE GLOBAL INC2.48%$214.8M612,743$314.77$350.49+$190.1M
S
SMCI
SUPER MICRO COMPUTER INC1.90%$164.9M3,363,687$41.38$49.01+$105.4M

Options Positions (10)

TickerSecurityActionTypeNotional ValueContractsUnderlying PricePremium PaidChange (Contracts)Change (Value)
M
MSTR
MICROSTRATEGY INCBought
Put
$1.42B35,052$404.23$270.06+8,000+$637.1M
N
NVDA
NVIDIA CORPORATIONBought
Put
$632.0M40,000$157.99$133.19+20,000+$415.2M
I
IBIT
ISHARES BITCOIN TRUST ETFNew
Put
$104.1M17,000$61.21$61.21+17,000+$104.1M
C
CHTR
CHARTER COMMUNICATIONS INC NSold
Put
$52.2M1,276$408.81$349.96-484-$12.7M
A
AAL
AMERICAN AIRLS GROUP INC
Put
$49.7M44,304$11.22$14.720+$3.0M

Industry Allocation

SERVICES-PREPACKAGED SOFTWARE
+28.2%
SEMICONDUCTORS & RELATED DEVICES
+19.2%
COMMODITY CONTRACTS BROKERS & DEALERS
+6.4%
FINANCE SERVICES
+3.2%
PHARMACEUTICAL PREPARATIONS
+2.2%