Siren, L.L.C. Q1 2025 Filing

Filed May 14, 2025

Portfolio Value

$1.8T

Holdings

116

Report Date

Q1 2025

Filing Type

13F-HR

All Holdings (116 positions)

#StockSharesValue% PortfolioType
1
SRRKScholar Rock Holding Corp
9,250,005$297.4B16.93%
2
ONCBeigene Ltd
498,689$135.7B7.73%
3
KYMRKymera Therapeutics Inc
3,240,313$88.7B5.05%
4
2L9Blueprint Medicines Corp
726,167$64.3B3.66%
5
CRNXCrinetics Pharmaceuticals Inc
1,688,611$56.6B3.22%
6
APLSApellis Pharmaceuticals Inc
2,578,396$56.4B3.21%
7
IRONDisc Medicine Inc
1,071,865$53.2B3.03%
8
SLNOSoleno Therapeutics Inc
727,337$52.0B2.96%
9
ASNDAscendis Pharma A/S
287,366$44.8B2.55%
10
MRUSMerus NV
1,043,467$43.9B2.50%
11
BCAXBicara Therapeutics Inc
3,267,083$42.6B2.42%
12
CNTACentessa Pharmaceuticals PLC
2,960,029$42.6B2.42%
13
NAMSNewAmsterdam Pharma Company NV
1,912,030$39.1B2.23%
14
EWTXEdgewise Therapeutics Inc
1,696,444$37.3B2.12%
15
ARWRArrowhead Pharmaceuticals Inc
2,669,880$34.0B1.94%
16
RNAAvidity Biosciences Inc
1,110,610$32.8B1.87%
17
WVEWAVE Life Sciences Ltd
3,696,322$29.9B1.70%
18
TBLATaboola.com Ltd
9,969,495$29.4B1.67%
19
DYNDyne Therapeutics Inc
2,717,987$28.4B1.62%
20
SLDBSolid Biosciences Inc
7,415,905$27.4B1.56%
21
XENEXenon Pharmaceuticals Inc
732,761$24.6B1.40%
22
APGEApogee Therapeutics Inc
594,994$22.2B1.27%
23
RVMDRevolution Medicines Inc
563,755$19.9B1.13%
24
TRVITrevi Therapeutics Inc
2,863,793$18.0B1.03%
25
VERAVera Therapeutics Inc
747,216$17.9B1.02%
26
PRTAProthena Corporation PLC
1,283,555$15.9B0.90%
27
BCYCBicycle Therapeutics PLC
1,812,752$15.4B0.88%
28
STOKStoke Therapeutics Inc
2,247,347$14.9B0.85%
29
RYTMRhythm Pharmaceuticals Inc
277,533$14.7B0.84%
30
SMMTSummit Therapeutics Inc
695,000$13.4B0.76%
31
SEPNSepterna Inc
2,202,514$12.8B0.73%
32
RCUSArcus Biosciences Inc
1,612,077$12.7B0.72%
33
IHSIHS Holding Limited
2,357,520$12.3B0.70%
34
ERASErasca Inc
8,757,249$12.0B0.68%
35
DNLIDenali Therapeutics Inc
821,513$11.2B0.64%
36
PCVXVaxcyte Inc
295,543$11.2B0.64%
37
AMZNAmazon.com Inc
56,500$10.7B0.61%
38
MSFTMicrosoft Corp
28,500$10.7B0.61%
39
RELYRemitly Global Inc
490,449$10.2B0.58%
40
TSHATaysha Gene Therapies Inc
6,514,737$9.1B0.52%
41
CGEMCullinan Therapeutics Inc
1,193,410$9.0B0.51%
42
CRWDCrowdStrike Holdings Inc
25,000$8.8B0.50%
43
SLNSilence Therapeutics PLC
2,789,833$7.9B0.45%
44
GOOGLAlphabet Inc
50,703$7.8B0.45%
45
RNACCartesian Therapeutics Inc
563,272$7.4B0.42%
46
ADBEAdobe Inc
19,298$7.4B0.42%
47
KRROKorro Bio Inc
418,833$7.3B0.42%
48
NOWServiceNow Inc
9,126$7.3B0.41%
49
SEERSeer Inc
4,000,000$6.8B0.38%
50
PDDPDD Holdings Inc
52,901$6.3B0.36%
51
SYRESpyre Therapeutics Inc
368,598$5.9B0.34%
52
GOSSGossamer Bio Inc
5,208,968$5.7B0.33%
53
ORICOric Pharmaceuticals Inc
1,007,575$5.6B0.32%
54
UPBUpstream Bio Inc
788,450$4.8B0.27%
55
NVDANVIDIA Corp
44,432$4.8B0.27%
56
TSMTaiwan Semiconductor Manufacturing Co Ltd
28,500$4.7B0.27%
57
DDOGDatadog Inc
47,425$4.7B0.27%
58
NMRANeumora Therapeutics Inc
4,358,283$4.4B0.25%
59
FROGJfrog Ltd
131,616$4.2B0.24%
60
DTDynatrace Inc
87,729$4.1B0.24%
61
MTSRMetsera Inc
150,000$4.1B0.23%
62
RCKTRocket Pharmaceuticals Inc
591,263$3.9B0.22%
63
CRMSalesforce Inc
14,600$3.9B0.22%
64
N1UANew Oriental Education & Technology Group Inc
79,500$3.8B0.22%
65
RAPPRapport Therapeutics Inc
378,469$3.8B0.22%
66
IONQIONQ Inc
170,000$3.8B0.21%
67
1K0IGM Biosciences Inc
3,255,826$3.7B0.21%
68
WHWKWhitehawk Therapeutics Inc
2,082,000$3.7B0.21%
69
TILInstil Bio Inc
203,933$3.5B0.20%
70
TNGXTango Therapeutics Inc
2,565,342$3.5B0.20%
71
VIGLVigil Neuroscience Inc
1,967,064$3.5B0.20%
72
SIONSionna Therapeutics Inc
325,000$3.4B0.19%
73
NBISNebius Group NV
140,000$3.0B0.17%
74
FHTXFoghorn Therapeutics Inc.
720,720$2.6B0.15%
75
RDDTReddit Inc
23,500$2.5B0.14%
76
LPLALPL Financial Holdings Inc
7,500$2.5B0.14%
77
SGMTSagimet Biosciences Inc
724,771$2.4B0.13%
78
ELDNEledon Pharmaceuticals Inc
690,170$2.3B0.13%
79
TSLATesla Inc
9,000$2.3B0.13%
80
KLRSKalaris Therapeutics Inc
282,586$2.3B0.13%
81
MRVLMarvell Technology Inc
36,808$2.3B0.13%
82
QCOMQualcomm Inc
14,000$2.2B0.12%
83
BEKEKe Holdings Inc
105,000$2.1B0.12%
84
LXEOLexeo Therapeutics Inc
603,435$2.1B0.12%
85
PRQRProQR Therapeutics NV
1,552,183$2.1B0.12%
86
PANWPalo Alto Networks Inc
11,500$2.0B0.11%
87
SAILSailPoint Inc
95,000$1.8B0.10%
88
BDTXBlack Diamond Therapeutics Inc
1,046,517$1.6B0.09%
89
LXRXLexicon Pharmaceuticals Inc
3,516,214$1.6B0.09%
90
SAROStandardAero, Inc.
56,855$1.5B0.09%
91
BIOABIOAGE Labs Inc
382,406$1.4B0.08%
92
TRMLTourmaline Bio Inc
91,426$1.4B0.08%
93
WKWorkiva Inc
17,500$1.3B0.08%
94
BILLBILL Holdings Inc
28,500$1.3B0.07%
95
PYPLPayPal Holdings Inc
20,000$1.3B0.07%
96
GBIOGBXGeneration Bio Co
2,968,925$1.2B0.07%
97
SEMRSEMrush Holdings Inc
125,000$1.2B0.07%
98
PEGAPegasystems Inc
16,500$1.1B0.07%
99
MDBMongoDB Inc
5,500$964.7M0.05%
100
NKENike Inc
15,000$952.2M0.05%
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