Siren, L.L.C. Q3 2025 Filing

Filed November 13, 2025

Portfolio Value

$2.6T

Holdings

115

Report Date

Q3 2025

Filing Type

13F-HR

All Holdings (115 positions)

#StockSharesValue% PortfolioType
1
SRRKScholar Rock Holding Corp
9,250,005$344.5B13.48%
2
KYMRKymera Therapeutics Inc
3,428,150$194.0B7.59%
3
ONCBeOne Medicines AG
492,990$168.0B6.57%
4
ARWRArrowhead Pharmaceuticals Inc
2,669,880$92.1B3.60%
5
BCAXBicara Therapeutics Inc
5,216,969$82.4B3.22%
6
CNTACentessa Pharmaceuticals PLC
3,227,517$78.3B3.06%
7
CRNXCrinetics Pharmaceuticals Inc
1,688,611$70.3B2.75%
8
EWTXEdgewise Therapeutics Inc
3,897,099$63.2B2.47%
9
IRONDisc Medicine Inc
913,401$60.4B2.36%
10
DYNDyne Therapeutics Inc
4,729,174$59.8B2.34%
11
APLSApellis Pharmaceuticals Inc
2,578,396$58.3B2.28%
12
RNAAvidity Biosciences Inc
1,285,610$56.0B2.19%
13
STOKStoke Therapeutics Inc
2,247,347$52.8B2.07%
14
LXRXLexicon Pharmaceuticals Inc
38,918,903$52.5B2.06%
15
RYTMRhythm Pharmaceuticals Inc
499,975$50.5B1.98%
16
TNGXTango Therapeutics Inc
5,883,188$49.4B1.93%
17
RVMDRevolution Medicines Inc
1,043,720$48.7B1.91%
18
ASNDAscendis Pharma A/S
235,862$46.9B1.83%
19
RZLTRezolute Inc
4,870,000$45.8B1.79%
20
SLDBSolid Biosciences Inc
7,415,905$45.8B1.79%
21
SEPNSepterna Inc
2,202,514$41.4B1.62%
22
RCUSArcus Biosciences Inc
2,912,077$39.6B1.55%
23
TSHATaysha Gene Therapies Inc
11,014,737$36.0B1.41%
24
TBLATaboola.com Ltd
9,969,495$34.0B1.33%
25
XENEXenon Pharmaceuticals Inc
812,761$32.6B1.28%
26
SLNOSoleno Therapeutics Inc
467,342$31.6B1.24%
27
RAPPRapport Therapeutics Inc
1,053,469$31.3B1.22%
28
GPCRStructure Therapeutics Inc
1,026,811$28.8B1.12%
29
WVEWAVE Life Sciences Ltd
3,696,322$27.1B1.06%
30
RELYRemitly Global Inc
1,618,271$26.4B1.03%
31
COGTCogent Biosciences Inc
1,724,279$24.8B0.97%
32
TRVITrevi Therapeutics Inc
2,536,867$23.2B0.91%
33
NAMSNewAmsterdam Pharma Company NV
765,705$21.8B0.85%
34
KRROKorro Bio Inc
418,833$20.1B0.78%
35
ERASErasca Inc
8,757,249$19.1B0.75%
36
IHSIHS Holding Limited
2,357,520$16.1B0.63%
37
QUREUniqure NV
275,200$16.1B0.63%
38
BCYCBicycle Therapeutics PLC
2,012,752$15.6B0.61%
39
SLNSilence Therapeutics PLC
2,911,438$15.1B0.59%
40
RAPTRAPT Therapeutics Inc
580,466$15.0B0.59%
41
UPBUpstream Bio Inc
788,450$14.8B0.58%
42
GOSSGossamer Bio Inc
5,208,968$13.7B0.54%
43
AVBPArrivent Biopharma Inc
700,000$12.9B0.51%
44
AMZNAmazon.com Inc
58,500$12.8B0.50%
45
ORICOric Pharmaceuticals Inc
1,007,575$12.1B0.47%
46
DNLIDenali Therapeutics Inc
821,513$11.9B0.47%
47
IONQIONQ Inc
170,000$10.5B0.41%
48
SIONSionna Therapeutics Inc
325,000$9.6B0.37%
49
CRWDCrowdStrike Holdings Inc
18,500$9.1B0.35%
50
MSFTMicrosoft Corp
17,150$8.9B0.35%
51
SEERSeer Inc
4,000,000$8.7B0.34%
52
NBISNebius Group NV
72,600$8.2B0.32%
53
NMRANeumora Therapeutics Inc
4,358,283$7.9B0.31%
54
TSMTaiwan Semiconductor Manufacturing Co Ltd
28,200$7.9B0.31%
55
CRMSalesforce Inc
30,100$7.1B0.28%
56
CGEMCullinan Therapeutics Inc
1,193,410$7.1B0.28%
57
NVDANVIDIA Corp
37,485$7.0B0.27%
58
NOWServiceNow Inc
7,126$6.6B0.26%
59
SYRESpyre Therapeutics Inc
368,598$6.2B0.24%
60
RNACCartesian Therapeutics Inc
563,272$5.8B0.23%
61
PDDPDD Holdings Inc
43,401$5.7B0.22%
62
ELDNEledon Pharmaceuticals Inc
2,072,767$5.4B0.21%
63
ADBEAdobe Inc
15,051$5.3B0.21%
64
GOOGLAlphabet Inc
21,203$5.2B0.20%
65
FROGJfrog Ltd
107,116$5.1B0.20%
66
SGMTSagimet Biosciences Inc
724,771$5.0B0.19%
67
DTDynatrace Inc
100,229$4.9B0.19%
68
DDOGDatadog Inc
32,925$4.7B0.18%
69
NBPI-Mab
1,165,957$4.4B0.17%
70
AGENAgenus Inc
1,064,250$4.1B0.16%
71
LXEOLexeo Therapeutics Inc
603,435$4.0B0.16%
72
BDTXBlack Diamond Therapeutics Inc
1,046,517$4.0B0.16%
73
WHWKWhitehawk Therapeutics Inc
2,082,000$4.0B0.15%
74
VTVTvTv Therapeutics Inc
163,000$3.8B0.15%
75
TILInstil Bio Inc
203,933$3.6B0.14%
76
FHTXFoghorn Therapeutics Inc
720,720$3.5B0.14%
77
PRQRProQR Therapeutics NV
1,552,183$3.3B0.13%
78
N1UANew Oriental Education & Technology Group Inc
62,000$3.3B0.13%
79
CRWVCoreWeave Inc
24,000$3.3B0.13%
80
PEPGPepGen Inc
700,000$3.2B0.13%
81
GTLBGitLab Inc
64,000$2.9B0.11%
82
BEKEKe Holdings Inc
145,000$2.8B0.11%
83
PANWPalo Alto Networks Inc
13,450$2.7B0.11%
84
TENXTenax Therapeutics Inc
352,441$2.7B0.10%
85
WKWorkiva Inc
30,000$2.6B0.10%
86
QCOMQualcomm Inc
14,000$2.3B0.09%
87
BIOABIOAGE Labs Inc
382,406$2.2B0.09%
88
KDPKeurig Dr Pepper Inc
77,050$2.0B0.08%
89
HUBSHubSpot Inc
4,000$1.9B0.07%
90
CMGChipotle Mexican Grill Inc
47,500$1.9B0.07%
91
KLRSKalaris Therapeutics Inc
318,264$1.8B0.07%
92
GBIOGeneration Bio Co
296,892$1.8B0.07%
93
CLBTCellebrite DI Ltd
90,000$1.7B0.07%
94
PRMBPrimo Brands Corp
75,000$1.7B0.06%
95
SPOTSpotify Technology SA
2,173$1.5B0.06%
96
NIQNIQ Global Intelligence PLC
95,000$1.5B0.06%
97
MNDYmonday.com Ltd
7,000$1.4B0.05%
98
SAILSailPoint Inc
50,000$1.1B0.04%
99
ESTCElastic NV
12,500$1.1B0.04%
100
IRENIREN Ltd
20,000$938.1M0.04%
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