River Street Advisors LLC
CIK 0001964897 · AURORA, IL · Quarter end: 2026-06-30 · Filed on: 2026-07-21 · Open the SEC source ↗
Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$339.5M
2026 Q2
Positions
177
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
36.3%
Est. Net Flow (Q)
—
2026 Q2
Top Holdings
MFSI
MFS ACTIVE EXCHANGE TRADED F
6.8%
OSBC
OLD SECOND BANCORP INC DEL
5.4%
IJH
ISHARES TR
5.1%
NVDA
NVIDIA CORPORATION
3.5%
SPYM
SPDR SERIES TRUST
3.1%
AAPL
APPLE INC
2.8%
CAT
CATERPILLAR INC
2.6%
AVGO
BROADCOM INC
2.5%
New / Increased
No prior quarter data
Reduced / Exited
No prior quarter data
Read the 2026-Q2 quarterly report · 13F Filing Calendar
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.