Institutional Manager · CIK 0001964897
River Street Advisors LLC
Aurora, IL · File #028-22846
Latest AUM
$266.9M
Positions
244
Top-10 Concentration
47.1%
Filings
12
Sector Allocation
Filing History
View all filings →- 13F HOLDINGS REPORTQ/E Dec 2025244 pos · $266.9M
- 13F HOLDINGS REPORTQ/E Sep 2025241 pos · $257.9M
- 13F HOLDINGS REPORTQ/E Jun 2025240 pos · $232.2M
- 13F HOLDINGS REPORTQ/E Mar 2025221 pos · $202.0M
- 13F HOLDINGS REPORTQ/E Dec 2024217 pos · $195.5M
- 13F HOLDINGS REPORTQ/E Sep 2024227 pos · $184.2M
- 13F HOLDINGS REPORTQ/E Jun 2024222 pos · $162.7M
- 13F HOLDINGS REPORTQ/E Mar 2024243 pos · $148.1M
- 13F HOLDINGS REPORTQ/E Dec 2023217 pos · $106.0M
- 13F HOLDINGS REPORTQ/E Sep 2023172 pos · $104.8M
- 13F HOLDINGS REPORTQ/E Jun 2023162 pos · $101.7M
- 13F HOLDINGS REPORTQ/E Mar 2023152 pos · $93.4M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | MFS ACTIVE EXCHANGE TRADED F | 55286W405 | 637,443 | $19.4M | 9.67% |
| 2 | ISHARES TR | 464287507 | 220,375 | $14.5M | 7.24% |
| 3 | NVIDIA CORPORATION | NVDA | 56,856 | $10.6M | 5.28% |
| 4 | SPDR SERIES TRUST | 78464A854 | 99,203 | $8.0M | 3.96% |
| 5 | APPLE INC | AAPL | 28,974 | $7.9M | 3.92% |
| 6 | OLD SECOND BANCORP INC ILL | OSBC | 365,721 | $7.1M | 3.55% |
| 7 | BROADCOM INC | AVGO | 20,597 | $7.1M | 3.55% |
| 8 | JPMORGAN CHASE & CO. | VYLD | 21,035 | $6.8M | 3.38% |
| 9 | MICROSOFT CORP | MSFT | 14,014 | $6.8M | 3.38% |
| 10 | FRANKLIN TEMPLETON ETF TR | FGDL | 165,754 | $6.4M | 3.19% |
| 11 | ALPHABET INC | GOOG | 19,776 | $6.2M | 3.08% |
| 12 | INVESCO EXCH TRD SLF IDX FD | IVZ | 297,141 | $5.8M | 2.90% |
| 13 | VANGUARD TAX-MANAGED FDS | 921943858 | 90,599 | $5.7M | 2.82% |
| 14 | CATERPILLAR INC | CAT | 8,210 | $4.7M | 2.34% |
| 15 | ELI LILLY & CO | LLY | 4,281 | $4.6M | 2.29% |
| 16 | MORGAN STANLEY | MS-PQ | 21,603 | $3.8M | 1.91% |
| 17 | VANGUARD INTL EQUITY INDEX F | 922042742 | 27,161 | $3.8M | 1.91% |
| 18 | AMAZON COM INC | AMZN | 15,187 | $3.5M | 1.75% |
| 19 | CUMMINS INC | CMI | 6,837 | $3.5M | 1.74% |
| 20 | KLA CORP | KLAC | 2,595 | $3.2M | 1.57% |