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River Street Advisors LLC

Location
AURORA, IL
Portfolio Value
Small $184,867,130
Diversification
Diversified
Filing Date
Global Rank
#4,045 / 8,232 ▲ 556
Top Industry
Semiconductors 10.3%
3Y Alpha vs SPY
+1.0%
Period ended 2 months ago
Filed Apr 21, 2026 · 53d
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
+80.8%
SPY
+76.5%
Annualised alpha
+1.0%
Max drawdown
−20.0%

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

119 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025
Top Position
8.1%
+1.5 pts
Top 5
25.3%
+0.3 pts
Top 10
40.1%
−1.4 pts
HHI
248
Jun 2023 → Mar 2026 · range 228 – 281
Diversified−1

Portfolio Trend

14 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026
Sector % Portfolio Value
Technology 24.2% $44,797,614
Financial Services 24.1% $44,542,984
Industrials 11.6% $21,370,543
Consumer Cyclical 8.9% $16,499,926
Healthcare 8.8% $16,320,150
Energy 5.4% $10,026,292
Communication Services 5.2% $9,637,917
Consumer Defensive 4.3% $7,973,280
Unclassified 3.7% $6,760,684
Utilities 2.4% $4,414,658
Real Estate 1.4% $2,523,082

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
4 positions
Ticker Δ Shares Shares Value Open

New Positions

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

Sold Out

Positions the filer fully exited
4 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
119 positions · $184,867,130 total · as of Mar 31, 2026
Showing 1–50 of 119 positions by value · page 1 of 3
Ticker Company Shares Value (USD) % of Portfolio History