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Siren, L.L.C.

Q2 2025 · Filed 2025-08-13
Market Value
$1.8B
+11.3%
Holdings
122
-10
New Purchases
14
Added To
21
Closed
21
Reduced
16
Top 10 Concentration
53.2%
Turnover
28.7%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
KYMR 8.50% 5.61% +2.89% $150M
MLTX 1.36% 0.00% +1.36% $24M
AKRO 0.97% 0.00% +0.97% $17M
LXRX 2.09% 1.13% +0.96% $37M
TSHA 1.45% 0.57% +0.87% $25M
AVBP 0.87% 0.00% +0.87% $15M
DYN 2.62% 1.80% +0.82% $46M
TNGX 0.98% 0.22% +0.76% $17M
RVMD 1.96% 1.26% +0.70% $35M
RYTM 1.47% 0.93% +0.54% $26M
SEPN 1.32% 0.81% +0.52% $23M
STOK 1.45% 0.94% +0.50% $26M
SLN 0.96% 0.50% +0.46% $17M
COGT 0.35% 0.00% +0.35% $6M
PCRX 0.31% 0.00% +0.31% $5M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
BPMC 0.00% 4.06% -4.06% $0
ONC 7.01% 8.58% -1.57% $123M
APLS 2.54% 3.56% -1.03% $45M
PRTA 0.00% 1.00% -1.00% $0
SMMT 0.00% 0.85% -0.85% $0
CRNX 2.76% 3.58% -0.82% $49M
VERA 0.33% 1.13% -0.80% $6M
WVE 1.36% 1.89% -0.52% $24M
RNAM 1.79% 2.07% -0.28% $32M
MTSR 0.00% 0.26% -0.26% $0
MRUS 2.55% 2.78% -0.23% $45M
MSFT 0.46% 0.68% -0.22% $8M
SRRK 18.61% 18.80% -0.19% $328M
BCYC 0.79% 0.97% -0.18% $14M
RCKT 0.08% 0.25% -0.17% $1M

Sector Allocation Over Time

Market Cap Concentration

TierHoldingsValueWeight
Mega Cap 9 $49M 2.8%
Large Cap 31 $291M 16.5%
Mid Cap 39 $1.0B 57.7%
Small Cap 26 $331M 18.8%
Micro Cap 17 $73M 4.2%

Portfolio Analytics

Avg Market Cap
$188.6B
Median Market Cap
$4.5B
Avg P/E
54.1
Median P/E
30.3
Avg Dividend Yield
0.00%
Avg Beta
1.11
# Stocks
122
# ETFs / Funds
0

Top Holdings (122 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 SRRK 18.61% 9,250,005 $328M $35.42 $30M
2 KYMR 8.50% 3,428,150 $150M $43.64 $61M +187,837 +5.8%
3 ONC 7.01% 509,990 $123M $242.07 -$12M +11,301 +2.3%
4 IRON 3.31% 1,099,401 $58M $52.96 $5M +27,536 +2.6%
5 CRNX 2.76% 1,688,611 $49M $28.76 -$8M
6 BCAX 2.75% 5,216,969 $48M $9.29 $6M +1,949,886 +59.7%
7 DYN 2.62% 4,836,437 $46M $9.52 $18M +2,118,450 +77.9%
8 CNTA 2.58% 3,460,029 $45M $13.14 $3M +500,000 +16.9%
9 MRUS 2.55% 853,467 $45M $52.60 $973K -190,000 -18.2%
10 APLS 2.54% 2,578,396 $45M $17.31 -$12M
11 ARWR 2.40% 2,669,880 $42M $15.80 $8M
12 EWTX 2.35% 3,160,298 $41M $13.11 $4M +1,463,854 +86.3%
13 LXRX 2.09% 38,918,903 $37M $0.95 $19M
14 TBLA 2.07% 9,969,495 $36M $3.66 $7M
15 RVMD 1.96% 938,755 $35M $36.79 $15M +375,000 +66.5%
16 RNAM 1.79% 1,110,610 $32M $28.40 -$1M
17 RYTM 1.47% 409,742 $26M $63.19 $11M +132,209 +47.6%
18 STOK 1.45% 2,247,347 $26M $11.35 $11M
19 TSHA 1.45% 11,014,737 $25M $2.31 $16M +4,500,000 +69.1%
20 XENE 1.45% 812,761 $25M $31.30 $855K +80,000 +10.9%
21 WVE 1.36% 3,696,322 $24M $6.50 -$6M
22 MLTX 1.36% 508,267 $24M $47.20 +508,267 NEW
23 SEPN 1.32% 2,202,514 $23M $10.57 $11M
24 TRVI 1.22% 3,938,793 $22M $5.47 $4M +1,075,000 +37.5%
25 TNGX 0.98% 3,364,814 $17M $5.12 $14M +799,472 +31.2%
26 AKRO 0.97% 318,647 $17M $53.36 +318,647 NEW
27 SLN 0.96% 2,911,438 $17M $5.80 $9M +121,605 +4.4%
28 AVBP 0.87% 700,000 $15M $21.77 +700,000 NEW
29 BCYC 0.79% 2,012,752 $14M $6.95 -$1M +200,000 +11.0%
30 RCUS 0.75% 1,612,077 $13M $8.14 $468K
31 IHS 0.74% 2,357,520 $13M $5.56 $802K
32 AMZN 0.70% 56,500 $12M $219.39 $2M
33 DNLI 0.65% 821,513 $11M $13.99 $324K
34 ERAS 0.63% 8,757,249 $11M $1.27 -$876K
35 ORIC 0.58% 1,007,575 $10M $10.15 $5M
36 RELY 0.55% 515,449 $10M $18.77 -$526K +25,000 +5.1%
37 PCVX 0.55% 295,543 $10M $32.51 -$2M
38 CRWD 0.54% 18,500 $9M $509.31 $608K -6,500 -26.0%
39 CGEM 0.51% 1,193,410 $9M $7.53 -$48K
40 GOOGL 0.51% 50,703 $9M $176.20 $1M
41 UPB 0.49% 788,450 $9M $10.98 $4M
42 SEER 0.49% 4,000,000 $9M $2.14 $2M
43 MSFT 0.46% 16,150 $8M $497.41 -$3M -12,350 -43.3%
44 NVDA 0.45% 49,985 $8M $157.99 $3M +5,553 +12.5%
45 IONQ 0.41% 170,000 $7M $42.97 $4M
46 TSM 0.39% 30,500 $7M $226.49 $2M +2,000 +7.0%
47 GOSS 0.36% 5,208,968 $6M $1.23 $677K
48 CRM 0.35% 22,600 $6M $272.69 $2M +8,000 +54.8%
49 COGT 0.35% 854,379 $6M $7.18 +854,379 NEW
50 RNAC 0.33% 563,272 $6M $10.39 -$2M
51 VERA 0.33% 247,216 $6M $23.56 -$12M -500,000 -66.9%
52 ADBE 0.33% 15,051 $6M $386.88 -$2M -4,247 -22.0%
53 SION 0.32% 325,000 $6M $17.35 $2M
54 PDD 0.31% 52,901 $6M $104.66 -$724K
55 SGMT 0.31% 724,771 $6M $7.62 $3M
56 SYRE 0.31% 368,598 $6M $14.97 -$429K
57 PCRX 0.31% 225,000 $5M $23.90 +225,000 NEW
58 NOW 0.30% 5,126 $5M $1,028.08 -$2M -4,000 -43.8%
59 KRRO 0.30% 418,833 $5M $12.49 -$2M
60 DDOG 0.29% 38,425 $5M $134.33 $457K -9,000 -19.0%
61 AGEN 0.28% 1,064,250 $5M $4.57 $4M +564,250 +112.8%
62 FROG 0.27% 107,116 $5M $43.88 $489K -24,500 -18.6%
63 RAPP 0.24% 378,469 $4M $11.37 $507K
64 DT 0.24% 75,229 $4M $55.21 $17K -12,500 -14.2%
65 WHWK 0.22% 2,082,000 $4M $1.87 $187K
66 EDU 0.22% 72,000 $4M $53.95 $84K -7,500 -9.4%
67 IGMS 0.21% 3,255,826 $4M $1.12 -$98K
68 FHTX 0.19% 720,720 $3M $4.70 $757K
69 VIGL 0.19% 411,191 $3M $7.95 -$232K -1,555,873 -79.1%
70 NMRA 0.18% 4,358,283 $3M $0.73 -$1M
71 PRQR 0.18% 1,552,183 $3M $2.04 $1M
72 YNDX 0.16% 51,000 $3M $55.33 -$134K -89,000 -63.6%
73 BDTX 0.15% 1,046,517 $3M $2.48 $973K
74 LXEO 0.14% 603,435 $2M $4.02 $332K
75 PANW 0.13% 11,500 $2M $204.64 $391K
76 QCOM 0.13% 14,000 $2M $159.26 $79K
77 WK 0.11% 28,000 $2M $68.45 $588K +10,500 +60.0%
78 ELDN 0.11% 690,170 $2M $2.71 -$469K
79 BEKE 0.11% 105,000 $2M $17.74 -$247K
80 HUBS 0.09% 3,000 $2M $556.63 +3,000 NEW
81 UNH 0.09% 5,076 $2M $311.97 +5,076 NEW
82 BIOA 0.09% 382,406 $2M $4.13 $141K
83 GTLB 0.09% 35,000 $2M $45.11 +35,000 NEW
84 TRML 0.08% 91,426 $1M $15.99 $71K
85 RCKT 0.08% 591,263 $1M $2.45 -$2M
86 TSLA 0.07% 4,000 $1M $317.66 -$1M -5,000 -55.6%
87 SAIL 0.06% 50,000 $1M $22.86 -$638K -45,000 -47.4%
88 SEMR 0.06% 125,000 $1M $9.05 -$35K
89 PRMB 0.06% 37,500 $1M $29.62 +37,500 NEW
90 CLBT 0.05% 60,000 $960K $16.00 +60,000 NEW
91 KLRS 0.04% 282,586 $755K $2.67 -$2M
92 HOOK 0.04% 566,640 $711K $1.25 $99K
93 TEAM 0.04% 3,500 $711K $203.09 +3,500 NEW
94 PCOR 0.04% 10,000 $684K $68.42 $24K
95 CCCS 0.03% 50,000 $470K $9.41 +50,000 NEW
96 PCG 0.02% 25,000 $348K $13.94 +25,000 NEW
97 RDDT 0.02% 2,000 $301K $150.57 -$2M -21,500 -91.5%
98 VRT 0.01% 2,000 $257K $128.41 +2,000 NEW
99 DECK 0.01% 2,000 $206K $103.07 -$353K -3,000 -60.0%
100 CRBU 0.01% 105,347 $133K $1.26 $37K

New Positions

SymbolValue% Port
MLTX $24M 1.36%
AKRO $17M 0.97%
AVBP $15M 0.87%
COGT $6M 0.35%
PCRX $5M 0.31%
HUBS $2M 0.09%
UNH $2M 0.09%
GTLB $2M 0.09%
PRMB $1M 0.06%
CLBT $960K 0.05%
TEAM $711K 0.04%
CCCS $470K 0.03%
PCG $348K 0.02%
VRT $257K 0.01%

Sold Out Positions

SymbolValue% Port
NKE —%
SARO —%
BILL —%
BA —%
OXY —%
USB —%
RACE —%
MDB —%
MRVL —%
INTC —%
LPLA —%
GDS —%
PEGA —%
SMMT —%
PRTA —%
View SEC EDGAR Filings for Siren, L.L.C. →

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms