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HENNESSY ADVISORS INC

Registered adviser
Location
NOVATO, CA
Portfolio Value
Mid $3,114,346,447
Diversification
Diversified
Filing Date
Global Rank
#1,212 / 8,817 ▼ 11
Top Industry
Engineering & Construction 10.3%
Period ended 4 months ago
Filed Jul 16, 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 110770
Roster of Oct 1, 2026
Regulatory AUM
$4,252,155,951
Main clients
Registered funds and BDCs (100% of AUM)
Registered funds advised
17 series (1 index, 1 ETF)
$4,446,422,399 net assets· N-CEN Oct 31, 2025
LEI
549300OM5HCSFZO7FR31
SIC code
6282
Private funds on Schedule D 7.B.(1)
As filed Dec 16, 2024; SEC's bulk Form ADV archive ends with 2024 filings.
No private funds listed.
Form ADV history
Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.
Rosters Regulatory AUM Main clients
Dec 2025 to Oct 2026 $4,252,155,951 Registered funds and BDCs (100%)
Jan 2025 to Sep 2025 $5,149,278,896 Registered funds and BDCs (100%)
Jan 2024 to Dec 2024 $3,071,521,476 Registered funds and BDCs (100%)
May 2023 to Dec 2023 $2,977,502,486 Registered funds and BDCs (100%)
Jan 2023 to Apr 2023 $2,977,502,486 Registered funds and BDCs (100%)
Jan 2022 to Dec 2022 $4,097,449,969 Registered funds and BDCs (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
Diversified active
Top 10 weight 23.1%, 97.7 effective positions, active share 82.8% against the S&P 500 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests
Turnover
Medium turnover
59.7% over the last four quarters (30% to under 100%)
Horizon
Horizon unknown
The value-weighted holding period is at least 10.1 quarters, but 20.6% of the book was already held when coverage starts

Closest benchmark: the S&P 500 as of 2026-06-30, active share 82.8%; sector active share 34.3% 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

324 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026
Top Position
3.5%
+1.1 pts
Top 5
13.8%
+2.9 pts
Top 10
23.1%
+4.1 pts
HHI
102
Sep 2023 → Jun 2026 · range 87 – 124
Diversified+12

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026
Sector % Portfolio Value
Industrials 17.4% $541,741,792
Technology 16.2% $504,240,763
Consumer Cyclical 15.3% $476,798,161
Energy 13.9% $432,278,598
Utilities 10.0% $310,718,466
Financial Services 9.9% $307,047,469
Healthcare 4.5% $138,791,253
Communication Services 4.3% $135,008,506
Consumer Defensive 4.1% $128,537,406
Basic Materials 2.3% $71,401,474
Real Estate 2.2% $67,390,159
Unclassified 0.0% $392,400

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

New Positions

Positions the filer opened this quarter
25 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
324 tracked positions · $3,114,346,447 total · filing declares 325 positions · $3,128,618,298 · as of Jun 30, 2026
Showing 1–50 of 324 positions by value · page 1 of 7
Ticker Company Shares Value (USD) % of Portfolio History

Showing the top 50 of 324 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.