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Arlington Partners LLC

Registered adviser
Location
BIRMINGHAM, AL
Portfolio Value
Micro $65,389,105
Diversification
Highly concentrated
Filing Date
Global Rank
#8,557 / 8,814 ▼ 15 · as of Jun 2026
Top Industry
Asset Management 100.0%
Period ended 22 days ago
Filed Oct 20, 2026 · 2d
27 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 109335
Roster of Oct 1, 2026
Regulatory AUM
$2,311,652,119
Main clients
Pooled investment vehicles (74% of AUM)
Private funds
15 funds · Mixed
Focus by fund count, roster of Oct 1, 2026
$1,516,070,843 gross assets
Registered funds advised
1 series (0 index, 1 ETF)
$603,165,462 net assets· N-CEN Dec 31, 2025
Private funds on Schedule D 7.B.(1)
As filed Jul 25, 2024; SEC's bulk Form ADV archive ends with 2024 filings.
$1,177,480,775 gross assets in 16 funds Other private funds $653,916,323 (2) Hedge funds $248,797,571 (1) Private equity funds $198,884,868 (8) Real estate funds $75,882,013 (5)
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 $2,311,652,119 Pooled investment vehicles (74%)
Apr 2025 to Mar 2026 $1,653,815,454 Pooled investment vehicles (100%)
Apr 2024 to Mar 2025 $1,340,641,610 Pooled investment vehicles (100%)
May 2023 to Mar 2024 $6,097,070,330 Individuals and high net worth (75%)
Apr 2023 $6,097,070,330 Individuals and high net worth (75%)
Apr 2022 to Mar 2023 $6,427,792,177 Individuals and high net worth (77%)
3 earlier changes not shown.

Portfolio style

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

Style
Concentrated
The top 10 positions are 76.6% of the book (60%+)
Turnover
Low turnover
17.1% over the last four quarters (under 30%)
Horizon
Short horizon
Value-weighted holding period 3.2 quarters (under 4)

Closest benchmark: the S&P 500 as of 2026-06-30, active share 91.2%; sector active share 54.5% 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

3 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026
Top Position
48.0%
+9.1 pts
Top 5
100.0%
+26.2 pts
Top 10
100.0%
+23.4 pts
HHI
4,324
Dec 2023 → Sep 2026 · range 217 – 5,199
Highly concentrated+2,126

Portfolio Trend

27 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2026
Sector % Portfolio Value
Unclassified 92.3% $60,341,803
Financial Services 7.7% $5,047,302

Last Quarter's Activity

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Sep 30, 2026 vs Jun 30, 2026

Added To

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

Trimmed

Positions the filer reduced
No qualifying positions this quarter.

New Positions

Positions the filer opened this quarter
No qualifying positions this quarter.

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
3 tracked positions · $65,389,105 total · filing declares 3 positions · $65,389,107 · as of Sep 30, 2026
Ticker Company Shares Value (USD) % of Portfolio History

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.