Siren, L.L.C. Portfolio Holdings

Siren, L.L.C.

  • $1.93 Trillion
  • Q2 2025

Siren, L.L.C. has filed its 13F form on August 13, 2025 for Q2 2025 where it was disclosed a total value porftolio of $1.93 Trillion distributed in 111 stocks.

Among their holdings, we can observe that their the top five positions include companies like: Scholar Rock Holding Corp with a value of $328B, Kymera Therapeutics, Inc. with a value of $150B, Bei Gene, Ltd. with a value of $123B, Disc Medicine Inc with a value of $58.2B, and Crinetics Pharmaceuticals, Inc. with a value of $48.6B.

Examining the 13F form we can see an increase of $160B in the current position value, from $1.77T to 1.93T.

Siren, L.L.C. is based out at New York, NY

Below you can find more details about Siren, L.L.C. portfolio as well as his latest detailed transactions.

Portfolio value $1.93 Trillion
Technology: $93.5 Billion
Communication Services: $58.5 Billion
Consumer Cyclical: $19.4 Billion
Healthcare: $7.04 Billion
Consumer Defensive: $3.88 Billion
Real Estate: $1.86 Billion
Utilities: $349 Million
Industrials: $257 Million
Other: $0

Stock Holdings Table Market Cap. of $10 Billions to $200 Billions

Stock Market Cap. Holding Value (Reported) # of Shares. Last Trade Trade History
$23.5B
$123 Billion 6.39% of portfolio
509,990
Q2 2025 Added 2.27%
$10.9B
$42.4 Billion 2.2% of portfolio
245,943
Q2 2025 Reduced 14.41%
$93.6B
$9.42 Billion 0.49% of portfolio
18,500
Q2 2025 Reduced 26.0%
$157B
$5.82 Billion 0.3% of portfolio
15,051
Q2 2025 Reduced 22.01%
$147B
$5.54 Billion 0.29% of portfolio
52,901
Q4 2024 Added 30.94%
$172B
$5.27 Billion 0.27% of portfolio
5,126
Q2 2025 Reduced 43.83%
$37.5B
$5.16 Billion 0.27% of portfolio
38,425
Q2 2025 Reduced 18.98%
$13.4B
$4.15 Billion 0.21% of portfolio
75,229
Q2 2025 Reduced 14.25%
$52.5B
$2.35 Billion 0.12% of portfolio
11,500
Q1 2025 Added 91.67%
$173B
$2.23 Billion 0.12% of portfolio
14,000
Q1 2025 Reduced 6.67%
$23B
$1.86 Billion 0.1% of portfolio
105,000
Q1 2025 Added 75.0%
$20.3B
$1.67 Billion 0.09% of portfolio
3,000
Q2 2025 New
$30.7B
$349 Million 0.02% of portfolio
25,000
Q2 2025 New
$32.7B
$257 Million 0.01% of portfolio
2,000
Q2 2025 New

Summary

  • Portfolio
  • No. of Stocks 111
  • Current Value $1.93 Trillion
  • Prior Value $1.77 Trillion
  • Filing
  • Period Q2 2025
  • Filing Date August 13, 2025
  • Form Type 13F-HR
  • Activity in Q2 2025
  • New Purchases 15 stocks
  • Additional Purchases 21 stocks
  • Sold out of 0 stocks
  • Reduced holdings in 19 stocks
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