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 $300 Millions to $2 Billions

Stock Market Cap. Holding Value (Reported) # of Shares. Last Trade Trade History
$1.66B
$328 Billion 16.95% of portfolio
9,250,005
Q4 2024 Reduced 17.85%
$1.53B
$48.6 Billion 2.51% of portfolio
1,688,611
Q1 2025 Added 4.91%
$602M
$46 Billion 2.38% of portfolio
4,836,437
Q2 2025 Added 77.94%
$1.61B
$45.5 Billion 2.35% of portfolio
3,460,029
Q2 2025 Added 16.89%
$1.88B
$42.2 Billion 2.18% of portfolio
2,669,880
Q1 2025 Reduced 7.99%
$846M
$41.4 Billion 2.14% of portfolio
3,160,298
Q2 2025 Added 86.29%
$777M
$36.5 Billion 1.89% of portfolio
9,969,495
Q3 2024 New
$533M
$25.5 Billion 1.32% of portfolio
2,247,347
Q1 2025 Added 12.37%
$734M
$24 Billion 1.24% of portfolio
3,696,322
Q1 2025 Reduced 1.44%
$428M
$21.5 Billion 1.11% of portfolio
3,938,793
Q2 2025 Added 37.54%
$595M
$17.2 Billion 0.89% of portfolio
3,364,814
Q2 2025 Added 31.16%
$698M
$13.1 Billion 0.68% of portfolio
1,612,077
Q3 2024 New
$1.77B
$11.5 Billion 0.59% of portfolio
821,513
Q1 2025 Reduced 1.5%
$377M
$10.2 Billion 0.53% of portfolio
1,007,575
Q3 2024 New
$1.78B
$9.61 Billion 0.5% of portfolio
295,543
Q1 2025 Reduced 1.48%
$332M
$8.99 Billion 0.47% of portfolio
1,193,410
Q1 2025 Reduced 1.48%
$572M
$5.82 Billion 0.3% of portfolio
247,216
Q2 2025 Reduced 66.92%
$1.14B
$5.38 Billion 0.28% of portfolio
225,000
Q2 2025 New
$321M
$1.13 Billion 0.06% of portfolio
125,000
Q1 2025 Added 257.14%

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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