River Street Advisors LLC
Long book
$295.9M
Q1 2026
Positions
172
Top-10 weight
35%
concentration
Last quarter
+12.0%
SPY +14.8%
Turnover
18%
of book per quarter
Strategy in plain words
auto-generated from filingsRiver Street Advisors LLC is an institutional manager, running a $295.9M US long book across 172 positions.
The portfolio is moderately concentrated (top 10 ≈ 35% of the book). Turnover is modest: positions are typically held for years. Current anchor positions: MFS ACTIVE INTERNATIONAL, ISHARES CORE S&P MIDCAP ETF, OLD SECOND BANCORP INC, NVIDIA CORP, STE STR SPDR PT S&P 500 ETF.
Over the last 9 quarters its long book ran on average 0.1pp per quarter behind the S&P 500, beating the index in 5 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+3.1%
Q2 2024
+7.3%
Q3 2024
+0.7%
Q4 2024
-3.0%
Q1 2025
+9.2%
Q2 2025
+8.3%
Q3 2025
+3.4%
Q4 2025
-1.1%
Q1 2026
+12.0%
Sector allocation
Technology 27%
Financials 22%
Industrials 16%
Healthcare 9%
Consumer discretionary 8%
Energy 6%
Other 3%
Utilities 3%
Long book by quarter
What does River Street own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| OSBC OLD SECOND BANCORP INC | Financials | 746.7K | $15.1M | 5.1% | +104.0% |
| NVDA NVIDIA CORP | Technology | 58.1K | $10.1M | 3.4% | +2.1% |
| AAPL APPLE INC | Technology | 32.2K | $8.2M | 2.8% | +5.3% |
| AVGO BROADCOM INC | Technology | 22.2K | $6.9M | 2.3% | +7.2% |
| JPM JPMORGAN CHASE & CO | Financials | 22.5K | $6.6M | 2.2% | +5.8% |
| GOOGL ALPHABET INC-CL A | Technology | 22.3K | $6.4M | 2.2% | +12.8% |
| MSFT MICROSOFT CORP | Technology | 16.5K | $6.1M | 2.1% | +15.7% |
| CAT CATERPILLAR INC | Industrials | 8.3K | $5.9M | 2.0% | +0.6% |
| GLW CORNING INC | Industrials | 34.9K | $4.7M | 1.6% | +0.5% |
| LLY ELI LILLY & CO | Healthcare | 4.6K | $4.2M | 1.4% | +2.1% |
| AMZN AMAZON.COM INC | Consumer discretionary | 18.2K | $3.8M | 1.3% | +19.9% |
| CMI CUMMINS INC | Industrials | 7.0K | $3.8M | 1.3% | +1.2% |
| MS MORGAN STANLEY | Financials | 22.7K | $3.7M | 1.3% | +4.4% |
| JNJ JOHNSON & JOHNSON | Healthcare | 13.1K | $3.2M | 1.1% | +2.4% |
| KLAC KLA CORP | Other | 2.1K | $3.1M | 1.0% | -20.2% |
| BLK BLACKROCK INC | Financials | 3.2K | $3.0M | 1.0% | +16.3% |
| VLO VALERO ENERGY CORP | Energy | 12.3K | $3.0M | 1.0% | +1.6% |
| CVX CHEVRON CORP | Energy | 14.3K | $3.0M | 1.0% | +63.9% |
| ABBV ABBVIE INC | Healthcare | 13.6K | $3.0M | 1.0% | +17.1% |
| PEP PEPSICO INC | Consumer staples | 18.0K | $2.8M | 0.9% | +25.5% |
| NOC NORTHROP GRUMMAN CORP | Technology | 3.7K | $2.5M | 0.9% | +2.5% |
| BX BLACKSTONE INC | Financials | 19.7K | $2.3M | 0.8% | +9.0% |
| NEE NEXTERA ENERGY INC | Utilities | 23.5K | $2.2M | 0.7% | +8.4% |
| PHM PULTEGROUP INC | Industrials | 18.2K | $2.1M | 0.7% | +94.6% |
| ETN EATON CORP PLC | Industrials | 5.6K | $2.0M | 0.7% | +3.8% |
| EOG EOG RESOURCES INC | Energy | 13.2K | $1.9M | 0.6% | +25.6% |
| MCD MCDONALD'S CORP | Consumer discretionary | 6.0K | $1.9M | 0.6% | +30.1% |
| COF CAPITAL ONE FINANCIAL CORP | Financials | 9.5K | $1.7M | 0.6% | +3.4% |
| HD HOME DEPOT INC | Consumer discretionary | 5.0K | $1.6M | 0.6% | +31.0% |
| MET METLIFE INC | Financials | 22.0K | $1.6M | 0.5% | +4.6% |
| WMT WALMART INC | Consumer discretionary | 11.9K | $1.5M | 0.5% | +4.3% |
| COST COSTCO WHOLESALE CORP | Consumer discretionary | 1.5K | $1.5M | 0.5% | +1.8% |
| NFLX NETFLIX INC | Services media | 15.3K | $1.5M | 0.5% | New |
| HON HONEYWELL INTERNATIONAL INC | Industrials | 6.5K | $1.5M | 0.5% | +3.0% |
| VIK VIKING HOLDINGS LTD | Industrials | 19.3K | $1.4M | 0.5% | +9.2% |
| MA MASTERCARD INC - A | Services media | 2.8K | $1.4M | 0.5% | +7.1% |
| ZTS ZOETIS INC | Healthcare | 11.7K | $1.4M | 0.5% | New |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 2.8K | $1.4M | 0.5% | +6.1% |
| NSC NORFOLK SOUTHERN CORP | Industrials | 4.6K | $1.3M | 0.4% | +4.1% |
| ENB ENBRIDGE INC | Energy | 24.2K | $1.3M | 0.4% | +2.3% |
| PWR QUANTA SERVICES INC | Industrials | 2.4K | $1.3M | 0.4% | Held |
| QCOM QUALCOMM INC | Technology | 9.9K | $1.3M | 0.4% | +18.5% |
| PEG PUBLIC SERVICE ENTERPRISE GP | Utilities | 15.5K | $1.3M | 0.4% | +3.0% |
| ABT ABBOTT LABORATORIES | Healthcare | 12.2K | $1.3M | 0.4% | +34.2% |
| SBUX STARBUCKS CORP | Consumer discretionary | 13.9K | $1.2M | 0.4% | +2.6% |
| PKG PACKAGING CORP OF AMERICA | Other | 5.5K | $1.2M | 0.4% | +1.8% |
| PG PROCTER & GAMBLE CO/THE | Other | 8.0K | $1.2M | 0.4% | +4.9% |
| SHOP SHOPIFY INC - CLASS A | Technology | 8.3K | $984K | 0.3% | Held |
| BMI BADGER METER INC | Technology | 6.0K | $920K | 0.3% | +12.2% |
| SOFI SOFI TECHNOLOGIES INC | Financials | 55.8K | $886K | 0.3% | +21.1% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | Apr 21, 2026 | 248 | $295.9M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Jan 26, 2026 | 244 | $266.9M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 22, 2025 | 241 | $257.9M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 21, 2025 | 240 | $232.2M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | Apr 21, 2025 | 221 | $202.0M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 24, 2025 | 217 | $195.5M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 6, 2024 | 227 | $184.2M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 13, 2024 | 222 | $162.7M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | Apr 17, 2024 | 243 | $148.1M | canonical | SEC ↗ |
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