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Asset Manager ← All Institutions

Siren, L.L.C.

Q3 2025 · Filed 2025-11-13
Market Value
$2.4B
+36.2%
Holdings
121
-1
New Purchases
20
Added To
24
Closed
16
Reduced
12
Top 10 Concentration
50.6%
Turnover
29.8%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
RZLT 1.91% 0.00% +1.91% $46M
ARWR 3.84% 2.40% +1.44% $92M
GPCR 1.20% 0.00% +1.20% $29M
TNGX 2.06% 0.98% +1.08% $49M
RAPP 1.31% 0.24% +1.06% $31M
RCUS 1.65% 0.75% +0.91% $40M
STOK 2.20% 1.45% +0.75% $53M
COGT 1.03% 0.35% +0.68% $25M
BCAX 3.44% 2.75% +0.68% $82M
CNTA 3.26% 2.58% +0.68% $78M
QURE 0.67% 0.00% +0.67% $16M
RYTM 2.11% 1.47% +0.64% $50M
RAPT 0.62% 0.00% +0.62% $15M
RELY 1.10% 0.55% +0.55% $26M
RNAM 2.34% 1.79% +0.54% $56M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
SRRK 14.37% 18.61% -4.24% $344M
MRUS 0.00% 2.55% -2.55% $0
MLTX 0.00% 1.36% -1.36% $0
AKRO 0.00% 0.97% -0.97% $0
IRON 2.52% 3.31% -0.79% $60M
TBLA 1.42% 2.07% -0.65% $34M
PCVX 0.00% 0.55% -0.55% $0
KYMR 8.09% 8.50% -0.40% $194M
VERA 0.00% 0.33% -0.33% $0
SLN 0.63% 0.96% -0.33% $15M
AVBP 0.54% 0.87% -0.33% $13M
PCRX 0.00% 0.31% -0.31% $0
GOOGL 0.21% 0.51% -0.29% $5M
TRVI 0.97% 1.22% -0.26% $23M
WVE 1.13% 1.36% -0.24% $27M

Sector Allocation Over Time

Market Cap Concentration

TierHoldingsValueWeight
Mega Cap 8 $45M 1.9%
Large Cap 31 $447M 18.7%
Mid Cap 36 $1.3B 53.4%
Small Cap 28 $526M 21.9%
Micro Cap 18 $100M 4.2%

Portfolio Analytics

Avg Market Cap
$182.2B
Median Market Cap
$4.1B
Avg P/E
60.2
Median P/E
33.3
Avg Dividend Yield
0.00%
Avg Beta
1.20
# Stocks
121
# ETFs / Funds
0

Top Holdings (121 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 SRRK 14.37% 9,250,005 $344M $37.24 $17M
2 KYMR 8.09% 3,428,150 $194M $56.60 $44M
3 ONC 7.01% 492,990 $168M $340.70 $45M -17,000 -3.3%
4 ARWR 3.84% 2,669,880 $92M $34.49 $50M
5 BCAX 3.44% 5,216,969 $82M $15.79 $34M
6 CNTA 3.26% 3,227,517 $78M $24.25 $33M -232,512 -6.7%
7 CRNX 2.93% 1,688,611 $70M $41.65 $22M
8 EWTX 2.64% 3,897,099 $63M $16.22 $22M +736,801 +23.3%
9 IRON 2.52% 913,401 $60M $66.08 $2M -186,000 -16.9%
10 DYN 2.50% 4,729,174 $60M $12.65 $14M -107,263 -2.2%
11 APLS 2.43% 2,578,396 $58M $22.63 $14M
12 RNAM 2.34% 1,285,610 $56M $43.57 $24M +175,000 +15.8%
13 STOK 2.20% 2,247,347 $53M $23.50 $27M
14 LXRX 2.19% 38,918,903 $53M $1.35 $16M
15 RYTM 2.11% 499,975 $50M $100.99 $25M +90,233 +22.0%
16 TNGX 2.06% 5,883,188 $49M $8.40 $32M +2,518,374 +74.8%
17 RVMD 2.03% 1,043,720 $49M $46.70 $14M +104,965 +11.2%
18 RZLT 1.91% 4,870,000 $46M $9.40 +4,870,000 NEW
19 SEPN 1.73% 2,202,514 $41M $18.81 $18M
20 RCUS 1.65% 2,912,077 $40M $13.60 $26M +1,300,000 +80.6%
21 TSHA 1.50% 11,014,737 $36M $3.27 $11M
22 TBLA 1.42% 9,969,495 $34M $3.41 -$2M
23 XENE 1.36% 812,761 $33M $40.15 $7M
24 RAPP 1.31% 1,053,469 $31M $29.70 $27M +675,000 +178.3%
25 GPCR 1.20% 1,026,811 $29M $28.00 +1,026,811 NEW
26 WVE 1.13% 3,696,322 $27M $7.32 $3M
27 RELY 1.10% 1,618,271 $26M $16.30 $17M +1,102,822 +213.9%
28 COGT 1.03% 1,724,279 $25M $14.36 $19M +869,900 +101.8%
29 TRVI 0.97% 2,536,867 $23M $9.15 $2M -1,401,926 -35.6%
30 KRRO 0.84% 418,833 $20M $47.89 $15M
31 ERAS 0.80% 8,757,249 $19M $2.18 $8M
32 IHS 0.67% 2,357,520 $16M $6.82 $3M
33 QURE 0.67% 275,200 $16M $58.37 +275,200 NEW
34 BCYC 0.65% 2,012,752 $16M $7.74 $2M
35 SLN 0.63% 2,911,438 $15M $5.19 -$2M
36 RAPT 0.62% 580,466 $15M $25.79 +580,466 NEW
37 UPB 0.62% 788,450 $15M $18.81 $6M
38 GOSS 0.57% 5,208,968 $14M $2.63 $7M
39 AVBP 0.54% 700,000 $13M $18.45 -$2M
40 AMZN 0.54% 58,500 $13M $219.57 $449K +2,000 +3.5%
41 ORIC 0.50% 1,007,575 $12M $12.00 $2M
42 DNLI 0.50% 821,513 $12M $14.52 $435K
43 IONQ 0.44% 170,000 $10M $61.50 $3M
44 SION 0.40% 325,000 $10M $29.41 $4M
45 CRWD 0.38% 18,500 $9M $490.38 -$350K
46 MSFT 0.37% 17,150 $9M $517.95 $850K +1,000 +6.2%
47 SEER 0.36% 4,000,000 $9M $2.17 $120K
48 YNDX 0.34% 72,600 $8M $112.27 $5M +21,600 +42.4%
49 NMRA 0.33% 4,358,283 $8M $1.82 $5M
50 TSM 0.33% 28,200 $8M $279.29 $968K -2,300 -7.5%
51 CRM 0.30% 30,100 $7M $237.00 $971K +7,500 +33.2%
52 CGEM 0.30% 1,193,410 $7M $5.93 -$2M
53 NVDA 0.29% 37,485 $7M $186.58 -$903K -12,500 -25.0%
54 NOW 0.27% 7,126 $7M $920.28 $1M +2,000 +39.0%
55 SYRE 0.26% 368,598 $6M $16.76 $660K
56 RNAC 0.24% 563,272 $6M $10.22 -$96K
57 PDD 0.24% 43,401 $6M $132.17 $200K -9,500 -18.0%
58 ELDN 0.22% 2,072,767 $5M $2.59 $3M +1,382,597 +200.3%
59 ADBE 0.22% 15,051 $5M $352.75 -$514K
60 GOOGL 0.21% 21,203 $5M $243.10 -$4M -29,500 -58.2%
61 FROG 0.21% 107,116 $5M $47.33 $370K
62 SGMT 0.21% 724,771 $5M $6.86 -$551K
63 DT 0.20% 100,229 $5M $48.45 $703K +25,000 +33.2%
64 DDOG 0.20% 32,925 $5M $142.40 -$473K -5,500 -14.3%
65 IMAB 0.18% 1,165,957 $4M $3.78 +1,165,957 NEW
66 AGEN 0.17% 1,064,250 $4M $3.85 -$766K
67 LXEO 0.17% 603,435 $4M $6.64 $2M
68 BDTX 0.17% 1,046,517 $4M $3.79 $1M
69 WHWK 0.16% 2,082,000 $4M $1.90 $62K
70 FHTX 0.15% 720,720 $4M $4.89 $137K
71 PRQR 0.14% 1,552,183 $3M $2.13 $140K
72 EDU 0.14% 62,000 $3M $53.07 -$594K -10,000 -13.9%
73 CRWV 0.14% 24,000 $3M $136.85 +24,000 NEW
74 PEPG 0.13% 700,000 $3M $4.62 +700,000 NEW
75 GTLB 0.12% 64,000 $3M $45.08 $1M +29,000 +82.9%
76 BEKE 0.11% 145,000 $3M $19.00 $892K +40,000 +38.1%
77 PANW 0.11% 13,450 $3M $203.62 $385K +1,950 +17.0%
78 WK 0.11% 30,000 $3M $86.08 $666K +2,000 +7.1%
79 QCOM 0.10% 14,000 $2M $166.36 $99K
80 BIOA 0.09% 382,406 $2M $5.88 $669K
81 KDP 0.08% 77,050 $2M $25.51 +77,050 NEW
82 HUBS 0.08% 4,000 $2M $467.80 $201K +1,000 +33.3%
83 CMG 0.08% 47,500 $2M $39.19 +47,500 NEW
84 KLRS 0.08% 318,264 $2M $5.78 $1M +35,678 +12.6%
85 GBIO 0.08% 296,892 $2M $6.12 +296,892 NEW
86 CLBT 0.07% 90,000 $2M $18.53 $708K +30,000 +50.0%
87 PRMB 0.07% 75,000 $2M $22.10 $547K +37,500 +100.0%
88 SPOT 0.06% 2,173 $2M $698.00 +2,173 NEW
89 MNDY 0.06% 7,000 $1M $193.69 +7,000 NEW
90 SAIL 0.05% 50,000 $1M $22.08 -$39K
91 ESTC 0.04% 12,500 $1M $84.49 +12,500 NEW
92 IREN 0.04% 20,000 $938K $46.91 +20,000 NEW
93 SEMR 0.04% 125,000 $885K $7.08 -$246K
94 PINS 0.03% 25,000 $804K $32.17 +25,000 NEW
95 FIG 0.03% 15,000 $778K $51.87 +15,000 NEW
96 CFLT 0.03% 37,500 $742K $19.80 +37,500 NEW
97 PCOR 0.03% 10,000 $729K $72.92 $45K
98 ALAB 0.03% 3,500 $685K $195.80 +3,500 NEW
99 TSLA 0.03% 1,500 $667K $444.72 -$604K -2,500 -62.5%
100 CHYM 0.02% 25,000 $504K $20.17 +25,000 NEW

New Positions

SymbolValue% Port
RZLT $46M 1.91%
GPCR $29M 1.20%
QURE $16M 0.67%
RAPT $15M 0.62%
IMAB $4M 0.18%
CRWV $3M 0.14%
PEPG $3M 0.13%
KDP $2M 0.08%
CMG $2M 0.08%
GBIO $2M 0.08%
SPOT $2M 0.06%
MNDY $1M 0.06%
ESTC $1M 0.04%
IREN $938K 0.04%
PINS $804K 0.03%

Sold Out Positions

SymbolValue% Port
DECK —%
PCG —%
UNH —%
RDDT —%
MLTX —%
PCVX —%
RCKT —%
VERA —%
PCRX —%
TEAM —%
HOOK —%
TRML —%
AKRO —%
MRUS —%
IGMS —%
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