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ARTHUR M. COHEN & ASSOCIATES, LLC

Registered adviser
Location
NORTHBROOK, IL
Portfolio Value
Small $635,603,937
Diversification
Diversified
Filing Date
Global Rank
#3,218 / 8,811 ▼ 123
Top Industry
Semiconductors 15.8%
Period ended 4 months ago
Filed Aug 11, 2026 · 2mo
26 quarters · since Mar 2020

Regulatory profile

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

Holder type
Registered adviser
Form ADV roster, Oct 1, 2026
Form ADV adviser
CRD 105894
Roster of Oct 1, 2026
Regulatory AUM
$1,111,514,757
Main clients
Individuals and high net worth (100% of AUM)
Form ADV history
Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.
Rosters Regulatory AUM Main clients
Apr 2026 to Oct 2026 $1,111,514,757 Individuals and high net worth (100%)
Mar 2025 to Mar 2026 $1,021,018,577 Individuals and high net worth (100%)
Mar 2024 to Feb 2025 $853,013,722 Individuals and high net worth (100%)
May 2023 to Feb 2024 $783,676,994 Individuals and high net worth (100%)
Mar 2023 to Apr 2023 $783,676,994 Individuals and high net worth (100%)
Mar 2022 to Feb 2023 $1,059,582,281 Individuals and high net worth (100%)
3 earlier changes not shown.

Portfolio style

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

Style
Concentrated
The top 10 positions are 62.2% of the book (60%+)
Turnover
Low turnover
4.9% over the last four quarters (under 30%)
Horizon
Long horizon
Value-weighted holding period 23.7 quarters (12+), a floor since 72.2% of the book was already held when coverage starts

Closest benchmark: the S&P 500 as of 2026-06-30, active share 55.9%; sector active share 16.9% against the combined 13F book's sector weights.

Over time 26 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

139 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026
Top Position
10.8%
−0.3 pts
Top 5
40.9%
+0.3 pts
Top 10
62.2%
−1.0 pts
HHI
476
Sep 2023 → Jun 2026 · range 459 – 571
Diversified−11

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026
Sector % Portfolio Value
Technology 31.7% $201,247,720
Financial Services 20.4% $129,765,073
Unclassified 12.6% $80,393,544
Healthcare 10.4% $66,179,766
Communication Services 9.9% $62,789,387
Consumer Cyclical 6.1% $38,994,689
Industrials 4.8% $30,825,819
Consumer Defensive 3.1% $19,618,222
Real Estate 0.5% $3,053,160
Energy 0.3% $1,737,535
Basic Materials 0.2% $999,022

Last Quarter's Activity

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Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open
— +27,827 54,555 $3,063,808

Trimmed

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

New Positions

Positions the filer opened this quarter
13 positions
Ticker Shares Value Open
— 2,040 $298,676

Sold Out

Positions the filer fully exited
1 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
139 tracked positions · $635,603,937 total · filing declares 139 positions · $640,038,391 · as of Jun 30, 2026
Showing 1–50 of 139 positions by value · page 1 of 3
Ticker Company Shares Value (USD) % of Portfolio History
54,555 $3,063,808 0.48%

Showing the top 50 of 139 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.