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One River Asset Management, LLC

Location
STAMFORD, CT
Portfolio Value
Small $252,333,454
Diversification
Diversified
Filing Date
Global Rank
#3,418 / 8,232 ▼ 1827
Top Industry
Semiconductors 15.2%
3Y Alpha vs SPY
+1.7%
Period ended 2 months ago
Filed Apr 27, 2026 · 48d
14 quarters · since Dec 2022

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio
+83.8%
SPY
+76.3%
Annualised alpha
+1.7%
Max drawdown
−22.3%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

90 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025
Top Position
8.8%
−34.6 pts
Top 5
33.9%
−29.7 pts
Top 10
49.8%
−25.1 pts
HHI
343
Jun 2023 → Mar 2026 · range 343 – 2,179
Diversified−1,708

Portfolio Trend

14 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026
Sector % Portfolio Value
Technology 37.9% $95,613,069
Financial Services 12.9% $32,500,379
Consumer Cyclical 12.1% $30,641,781
Communication Services 9.5% $23,903,985
Healthcare 7.8% $19,582,271
Unclassified 5.4% $13,628,000
Industrials 4.6% $11,614,217
Consumer Defensive 4.5% $11,322,894
Energy 3.7% $9,367,770
Basic Materials 1.3% $3,304,314
Utilities 0.3% $854,774

Last Quarter's Activity

Export CSV
Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
10 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
11 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
90 positions · $252,333,454 total · as of Mar 31, 2026
Showing 1–50 of 90 positions by value · page 1 of 2
Ticker Company Shares Value (USD) % of Portfolio History