Twin Securities, Inc. Hedge Fund

Location: New York, NY

CIK: 0001351351 · Show all filings

Period: Q1 2026 (← Previous)

Filing Date: May 15, 2026

Total Value: $206M (100.0% shares, 0.0% debt)

Holdings (17)

New Positions (9)

ACLX ARCELLX INC 3.0%

Value $6.198M Shares 53,982 Est. Cost $71.30 Unrealized 0.0%

TERN TERNS PHARMACEUTICALS INC 3.0%

Value $6.113M Shares 115,958 Est. Cost $37.46 Unrealized 0.0%

APLS APELLIS PHARMACEUTICALS INC 2.5%

Value $5.127M Shares 127,440 Est. Cost $22.69 Unrealized 0.0%

RVMD REVOLUTION MEDICINES INC 1.8%

Value $3.793M Shares 39,000 Est. Cost $103.02 Unrealized 0.0%

RVMD REVOLUTION MEDICINES INC 1.8%

Value $3.753M Shares 38,593 Est. Cost $103.02 Unrealized 0.0%

OS ONESTREAM INC 0.7%

Value $1.449M Shares 60,372 Est. Cost $23.28 Unrealized 0.0%

TTWO TAKE-TWO INTERACTIVE SOFTWAR 0.6%

Value $1.284M Shares 6,500 Est. Cost $224.98 Unrealized 0.0%

DAWN DAY ONE BIOPHARMACEUTICALS I 0.3%

Value $678K Shares 31,626 Est. Cost $11.02 Unrealized 0.0%

RNA ATRIUM THERAPEUTICS INC 0.3%

Value $667K Shares 49,913 Est. Cost $13.37 Unrealized —

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
ACLX	ARCELLX INC	53,982	$6.198M	3.0%	$71.30	0.0%	COMMON STOCK	03940C100
TERN	TERNS PHARMACEUTICALS INC	115,958	$6.113M	3.0%	$37.46	0.0%	COM	880881107
APLS	APELLIS PHARMACEUTICALS INC	127,440	$5.127M	2.5%	$22.69	0.0%	COM	03753U106
RVMD	REVOLUTION MEDICINES INC	39,000	$3.793M	1.8%	$103.02	0.0%	PUT	76155X100
RVMD	REVOLUTION MEDICINES INC	38,593	$3.753M	1.8%	$103.02	0.0%	COM	76155X100
OS	ONESTREAM INC	60,372	$1.449M	0.7%	$23.28	0.0%	CL A	68278B107
TTWO	TAKE-TWO INTERACTIVE SOFTWAR	6,500	$1.284M	0.6%	$224.98	0.0%	COM	874054109
DAWN	DAY ONE BIOPHARMACEUTICALS I	31,626	$678K	0.3%	$11.02	0.0%	COM	23954D109
RNA	ATRIUM THERAPEUTICS INC	49,913	$667K	0.3%	$13.37	—	COM	04965N104

Increased Positions (6)

EA ELECTRONIC ARTS INC 44.2%

Value $91.12M (+85.9%) Shares 446,948 (+86.4%) Est. Cost $202.09 Unrealized +0.2%

CWAN CLEARWATER ANALYTICS HLDGS I 13.4%

Value $27.53M (+2214.6%) Shares 1,164,090 (+2260.6%) Est. Cost $23.67 Unrealized +0.7%

HOLX HOLOGIC INC 6.6%

Value $13.53M (+115.0%) Shares 179,036 (+111.8%) Est. Cost $74.10 Unrealized +1.2%

WBD WARNER BROS DISCOVERY INC 17.3%

Value $35.7M (+11.1%) Shares 1,299,915 (+16.6%) Est. Cost $23.11 Unrealized +22.2%

KVUE KENVUE INC 4.0%

Value $8.284M (+18.4%) Shares 480,517 (+18.5%) Est. Cost $16.48 Unrealized +7.2%

MANU MANCHESTER UTD PLC NEW 0.1%

Value $251K (+8.2%) Shares 14,920 (+2.4%) Est. Cost $17.42 Unrealized -1.6%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
EA	ELECTRONIC ARTS INC	446,948 (+86.4%)	$91.12M (+85.9%)	44.2%	$202.09	+0.2%	COM	285512109
CWAN	CLEARWATER ANALYTICS HLDGS I	1,164,090 (+2260.6%)	$27.53M (+2214.6%)	13.4%	$23.67	+0.7%	CL A	185123106
HOLX	HOLOGIC INC	179,036 (+111.8%)	$13.53M (+115.0%)	6.6%	$74.10	+1.2%	COM	436440101
WBD	WARNER BROS DISCOVERY INC	1,299,915 (+16.6%)	$35.7M (+11.1%)	17.3%	$23.11	+22.2%	COM SER A	934423104
KVUE	KENVUE INC	480,517 (+18.5%)	$8.284M (+18.4%)	4.0%	$16.48	+7.2%	COM	49177J102
MANU	MANCHESTER UTD PLC NEW	14,920 (+2.4%)	$251K (+8.2%)	0.1%	$17.42	-1.6%	ORD CL A	G5784H106

Exited Positions (9)

— CYBERARK SOFTWARE LTD 28.8%

Value $59.39M Shares 133,145 Est. Cost $459.10 Unrealized —

EXAS EXACT SCIENCES CORP 23.8%

Value $49.11M Shares 483,589 Est. Cost $80.31 Unrealized +27.8%

RNAM AVIDITY BIOSCIENCES INC 12.8%

Value $26.34M Shares 365,144 Est. Cost $64.59 Unrealized +12.5%

CFLT CONFLUENT INC 7.4%

Value $15.29M Shares 505,486 Est. Cost $24.55 Unrealized +24.2%

NSC NORFOLK SOUTHN CORP 3.5%

Value $7.276M Shares 25,200 Est. Cost $288.62 Unrealized +3.3%

— DAYFORCE INC 1.3%

Value $2.714M Shares 39,241 Est. Cost $68.83 Unrealized +0.6%

— CIDARA THERAPEUTICS INC 0.5%

Value $1.082M Shares 4,900 Est. Cost $220.89 Unrealized —

MLYS MINERALYS THERAPEUTICS INC 0.3%

Value $607K Shares 16,737 Est. Cost $40.10 Unrealized -21.8%

WBD WARNER BROS DISCOVERY INC 0.3%

Value $579K Shares 20,100 Est. Cost $23.11 Unrealized +22.2%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
—	CYBERARK SOFTWARE LTD	133,145	$59.39M	28.8%	$459.10	—	—	M2682V108
EXAS	EXACT SCIENCES CORP	483,589	$49.11M	23.8%	$80.31	+27.8%	—	30063P105
RNAM	AVIDITY BIOSCIENCES INC	365,144	$26.34M	12.8%	$64.59	+12.5%	—	05370A108
CFLT	CONFLUENT INC	505,486	$15.29M	7.4%	$24.55	+24.2%	—	20717M103
NSC	NORFOLK SOUTHN CORP	25,200	$7.276M	3.5%	$288.62	+3.3%	—	655844108
—	DAYFORCE INC	39,241	$2.714M	1.3%	$68.83	+0.6%	—	15677J108
—	CIDARA THERAPEUTICS INC	4,900	$1.082M	0.5%	$220.89	—	—	171757206
MLYS	MINERALYS THERAPEUTICS INC	16,737	$607K	0.3%	$40.10	-21.8%	—	603170101
WBD	WARNER BROS DISCOVERY INC	20,100	$579K	0.3%	$23.11	+22.2%	CALL	934423104

Decreased Positions (1)

SGRY SURGERY PARTNERS INC 0.1%

Value $119K (-95.5%) Shares 10,025 (-94.1%) Est. Cost $22.39 Unrealized -31.8%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
SGRY	SURGERY PARTNERS INC	10,025 (-94.1%)	$119K (-95.5%)	0.1%	$22.39	-31.8%	COM	86881A100

Unchanged Positions (1)

TIC TIC SOLUTIONS INC 0.2%

Value $509K Shares 77,339 Est. Cost $11.94 Unrealized -14.2%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
TIC	TIC SOLUTIONS INC	77,339	$509K	0.2%	$11.94	-14.2%	COM	00510N102