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Mattson Financial Services, LLC

Location
KENTWOOD, MI
Portfolio Value
Small $474,812,951
Diversification
Diversified
Filing Date
Global Rank
#3,831 / 8,814 ▲ 18
Top Industry
Software - Infrastructure 9.7%
Period ended 4 months ago
Filed Aug 4, 2026 · 3mo
9 quarters · since Jun 2024

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type
Unknown

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style
Diversified active
Top 10 weight 33.9%, 57.1 effective positions, active share 62.2% against every 13F filer's combined book; it meets none of the index-like, systematic-like or concentrated tests
Turnover
Medium turnover
34.2% over the last four quarters (30% to under 100%)
Horizon
Medium horizon
Value-weighted holding period 7.1 quarters (4 to under 12)

Closest benchmark: every 13F filer's combined book, active share 62.2%; sector active share 25.3% against the combined 13F book's sector weights.

Over time 9 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

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Portfolio Concentration

233 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026
Top Position
5.6%
+0.0 pts
Top 5
21.4%
+0.4 pts
Top 10
33.9%
+0.2 pts
HHI
175
Jun 2024 → Jun 2026 · range 137 – 178
Diversified+3

Portfolio Trend

9 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026
Sector % Portfolio Value
Unclassified 33.9% $160,823,575
Technology 19.4% $92,117,368
Financial Services 10.7% $50,993,897
Industrials 6.4% $30,288,982
Consumer Cyclical 6.3% $30,129,937
Healthcare 6.1% $29,142,952
Communication Services 5.3% $24,996,417
Consumer Defensive 4.5% $21,327,070
Energy 3.3% $15,436,604
Basic Materials 1.5% $6,950,747
Real Estate 1.4% $6,657,230
Utilities 1.3% $5,948,172

Last Quarter's Activity

Export CSV
Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open
— −6,316 24,022 $3,972,758

New Positions

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

Sold Out

Positions the filer fully exited
19 positions
Ticker Shares Value Open
— 31,221 $3,765,564
— 6,184 $0

Portfolio Positions

Export CSV View 13F filing
233 tracked positions · $474,812,951 total · filing declares 235 positions · $477,759,914 · as of Jun 30, 2026
Showing 1–50 of 233 positions by value · page 1 of 5
Ticker Company Shares Value (USD) % of Portfolio History
24,022 $3,972,758 0.84%

Showing the top 50 of 233 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.