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Alesco Advisors, LLC, An ESL Co

Registered adviser
Location
Pittsford, NY
Portfolio Value
Mid $4,067,865,027
Diversification
Highly concentrated
Filing Date
Global Rank
#1,016 / 8,816 ▼ 46
Top Industry
Consumer Electronics 13.0%
Period ended 4 months ago
Filed Aug 5, 2026 · 3mo
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 339091
Roster of Oct 1, 2026
Regulatory AUM
$5,611,340,728
Main clients
Diversified
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 $5,611,340,728 Diversified
Feb 2026 to Mar 2026 $4,810,630,597 Charitable organizations (50%)

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 94.5% of the book (60%+)
Turnover
Low turnover
4.9% over the last four quarters (under 30%)
Horizon
Long horizon
Value-weighted holding period 23.3 quarters (12+), a floor since 74.0% of the book was already held when coverage starts

Closest benchmark: every 13F filer's combined book, active share 89.6%; sector active share 85.3% 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

230 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026
Top Position
62.4%
+0.9 pts
Top 5
83.0%
+0.8 pts
Top 10
94.5%
+0.5 pts
HHI
4,035
Sep 2023 → Jun 2026 · range 3,923 – 5,316
Highly concentrated+112

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026
Sector % Portfolio Value
Unclassified 97.8% $3,979,826,202
Technology 0.9% $38,198,726
Financial Services 0.3% $14,042,545
Consumer Cyclical 0.2% $8,065,812
Industrials 0.2% $7,291,154
Communication Services 0.2% $6,219,397
Healthcare 0.1% $5,262,543
Real Estate 0.1% $3,437,607
Energy 0.1% $2,295,256
Consumer Defensive 0.0% $1,781,351
Basic Materials 0.0% $893,369
Utilities 0.0% $551,065

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
— −12,889 284,895 $5,393,062

New Positions

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

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
230 tracked positions · $4,067,865,027 total · filing declares 230 positions · $4,364,296,517 · as of Jun 30, 2026
Showing 1–50 of 230 positions by value · page 1 of 5
Ticker Company Shares Value (USD) % of Portfolio History
95,483 $5,506,504 0.14%
284,895 $5,393,062 0.13%

Showing the top 50 of 230 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.