Sign in

Twin Securities, Inc.

CIK:0001351351
Hedge Fund
$271M AUM
13 holdings
New York, NY, United States
Founded:1988
5 employees
Latest filing:Jun 30, 2025

Twin Securities, Inc. is a New York-based investment adviser and hedge fund manager founded in 1988 by David J. Simon. The firm specializes in merger arbitrage and event-driven investment strategies. It operates with around 5 employees and caters primarily to pooled investment vehicles and other institutional clients, managing hundreds of millions in assets and serving sophisticated investors seeking alternative investment opportunities.

Investment Strategy

Twin Securities, Inc. focuses on merger arbitrage and event-driven strategies. The firm seeks to capitalize on pricing inefficiencies associated with corporate mergers, acquisitions, and other special situations, employing rigorous analysis and discretionary management to generate alpha for pooled investment vehicles. Its philosophy emphasizes risk-adjusted returns, concentrated expertise in event-driven opportunities, and disciplined portfolio construction, targeting sophisticated institutional investors.

Top Buys
B
BPMCBLUEPRINT MEDICINES CORP
+$15.4M
H
HESHESS CORP
+$8.4M
K
KKELLANOVA
+$4.9M
S
SGRYSURGERY PARTNERS INC
+$3.5M
D
DNBDUN & BRADSTREET HLDGS INC
+$2.1M
Top Sells
I
ITCIINTRA-CELLULAR THERAPIES INC
-$58.1M
B
BECNBEACON ROOFING SUPPLY INC
-$22.0M
H
HEESH & E EQUIPMENT SERVICES INC
-$10.4M
D
DFSDISCOVER FINL SVCS
-$3.9M
C
CMRXCHIMERIX INC
-$1.7M

Top Holdings

K
KKELLANOVA
+19.3%$34.1M
H
HESHESS CORP
+16.0%$28.3M
B
BPMCBLUEPRINT MEDICINES CORP
+8.7%$15.4M
S
SGRYSURGERY PARTNERS INC
+6.5%$11.4M
S
SPRSPIRIT AEROSYSTEMS HLDGS INC
+5.5%$9.7M

Equity Positions (11)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
K
K
KELLANOVA19.33%$34.1M428,305$80.97$79.53+$4.9M
H
HES
HESS CORP16.05%$28.3M204,131$142.98$138.54+$8.4M
B
BPMC
BLUEPRINT MEDICINES CORP8.74%$15.4M120,126$128.18$128.18+$15.4M
S
SGRY
SURGERY PARTNERS INC6.45%$11.4M511,716$23.21$22.23+$3.5M
S
SPR
SPIRIT AEROSYSTEMS HLDGS INC5.49%$9.7M253,643$34.42$38.15-$570.0K

Options Positions (2)

TickerSecurityActionTypeNotional ValueContractsUnderlying PricePremium PaidChange (Contracts)Change (Value)
B
BA
BOEING CONew
Call
$63.2M3,017$209.53$209.53+3,017+$63.2M
K
K
KELLANOVANew
Put
$15.9K2$79.53$79.53+2+$15.9K

Industry Allocation

AIRCRAFT
+35.9%
GRAIN MILL PRODUCTS
+19.3%
PETROLEUM REFINING
+16.0%
PHARMACEUTICAL PREPARATIONS
+8.7%
SERVICES-GENERAL MEDICAL & SURGICAL HOSPITALS, NEC
+6.5%