River Street Advisors LLC

CIK 0001964897 · Q1 2026

13F Equity AUM

$295.9M

+10.9% QoQ

Positions

172

+5 QoQ

AUM Rank

#5,924

Top 48%

Skill Alpha (FF)

-0.2%/yr^ns

No Clear Edge

Rank #2,638 · Top 32%

vs S&P -5.3%/yr (unadj.)

Quarters Tracked

~3 years

Portfolio Concentration

Top 5: 23.6%Top 10: 35.4%Top 20: 51.8%

MFSI7.0%

IJH5.1%

OSBC5.1%

NVDA3.4%

SPYM2.9%

AAPL2.8%

VEA2.4%

AVGO2.3%

JPM2.2%

GOOGL2.2%

Others (162)64.6%

HHI (Herfindahl-Hirschman Index) measures portfolio concentration. Low (<1500) = diversified, Moderate (1500-2500), High (>2500) = concentrated bets.

Sector Allocation

Financial Services47.4%

Technology14.9%

Industrials7.4%

Fund7.0%

Consumer Cyclical5.6%

Healthcare5.5%

Communication Services3.5%

Energy3.4%

Other5.4%

Portfolio weight by GICS sector based on latest 13F filing. Sectors below 2% are grouped as “Other.”

Position Sizing

Positions: 172Median: 0.25%Avg: 0.58%

0–0.5%

123(25.3%)

0.5–1%

23(16.4%)

1–3%

22(37.6%)

3–5%

1(3.4%)

5%+

3(17.2%)

Count of positions per weight bucket — (%) = combined portfolio weight

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Portfolio Overlap

Shared: 171Unique: 1vs 20 funds

2.3%Low

172

Fund positions

7,299

Consensus CUSIPs

Jaccard similarity of this fund’s portfolio vs the consensus of top 20 funds by AUM. Low (<15%) = contrarian, Moderate (15-40%), High (>40%) = follows the crowd.

Most Similar Funds

Top 9 benchmark funds with highest portfolio overlap (Jaccard similarity)

MORGAN STANLEY

3.2%

BANK OF AMERICA CORP /DE/

3.4%

2.8%

4.5%

3.3%

3.2%

VANGUARD CAPITAL MANAGEMENT LLC

2.8%

GEODE CAPITAL MANAGEMENT, LLC

2.7%

VANGUARD PORTFOLIO MANAGEMENT LLC

3.2%

Jaccard similarity per fund: shared CUSIPs / (fund A + fund B − shared). Higher values indicate more similar portfolios.

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Position Changes This Quarter

New19Increased96Decreased19Exited14

New Positions

BSJR1.1%

+142K

NFLX0.5%

+15K

ZTS0.5%

+12K

VBK0.2%

+2K

BAC0.2%

+10K

MQY0.2%

+44K

OKE0.2%

+5K

CME0.1%

+1K

OKTA0.1%

+6K

UNP0.1%

+2K

Increased

OSBC5.1%

+381K(+104%)

BSCS1.2%

+163K(+1437%)

BSCR2.1%

+162K(+105%)

MFSI7.0%

+58K(+9%)

MHD0.2%

+37K(+264%)

BSMR0.4%

+24K(+108%)

TFLR0.9%

+22K(+74%)

VEA2.4%

+19K(+21%)

MUA0.1%

+17K(+155%)

FLIN2.0%

+16K(+10%)

Decreased

BSCQ0.1%

-283,812(-95%)

XLE0.1%

-10,786(-65%)

VGK0.7%

-9,767(-27%)

BSMQ0.2%

-5,487(-19%)

VNQ0.5%

-3,518(-19%)

SPIB0.6%

-2,515(-5%)

KLAC1.0%

-529(-20%)

GOOG0.2%

-315(-13%)

VPU0.3%

-181(-4%)

VYM0.3%

-148(-2%)

Exited

-132,921

-1,709

-5,406

-5,711

-6,217

Holdings

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