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THOMPSON INVESTMENT MANAGEMENT, INC.

Registered adviser
Location
MADISON, WI
Portfolio Value
Small $867,649,863
Diversification
Diversified
Filing Date
Global Rank
#2,756 / 8,823 ▼ 11 · as of Jun 2026
Top Industry
Internet Content & Information 7.4%
Period ended 34 days ago
Filed Oct 14, 2026 · 20d
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, Nov 1, 2026
Form ADV adviser
CRD 129609
Roster of Nov 1, 2026
Regulatory AUM
$3,084,417,000
Main clients
Registered funds and BDCs (70% of AUM)
Registered funds advised
3 series (0 index, 0 ETFs)
$1,940,574,977 net assets· N-CEN Nov 30, 2025
LEI
549300EWKPKJRTELHQ79
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 Nov 2026 $3,084,417,000 Registered funds and BDCs (70%)
Apr 2025 to Mar 2026 $2,659,813,000 Registered funds and BDCs (70%)
Apr 2024 to Mar 2025 $2,135,401,000 Registered funds and BDCs (68%)
May 2023 to Mar 2024 $2,425,678,000 Registered funds and BDCs (74%)
Apr 2023 $2,425,678,000 Registered funds and BDCs (74%)
Apr 2022 to Mar 2023 $3,371,912,000 Registered funds and BDCs (79%)
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
Diversified active
Top 10 weight 24.2%, 70.5 effective positions, active share 69.0% against the S&P 500 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests
Turnover
Low turnover
24.9% over the last four quarters (under 30%)
Horizon
Long horizon
Value-weighted holding period 21.7 quarters (12+), a floor since 65.1% of the book was already held when coverage starts

Closest benchmark: the S&P 500 as of 2026-06-30, active share 69.0%; sector active share 19.0% 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

442 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026
Top Position
5.3%
−0.3 pts
Top 5
16.9%
+1.4 pts
Top 10
25.8%
+1.5 pts
HHI
150
Dec 2023 → Sep 2026 · range 137 – 162
Diversified+8

Portfolio Trend

27 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2026
Sector % Portfolio Value
Technology 24.5% $212,318,461
Healthcare 16.7% $144,699,469
Financial Services 15.2% $131,493,908
Communication Services 8.8% $76,131,173
Consumer Defensive 7.9% $68,793,217
Industrials 7.3% $62,984,140
Consumer Cyclical 5.7% $49,124,437
Unclassified 4.9% $42,808,228
Energy 4.2% $36,679,319
Real Estate 2.2% $18,662,764
Utilities 1.7% $14,333,714
Basic Materials 1.1% $9,621,033

Last Quarter's Activity

Export CSV
Sep 30, 2026 vs Jun 30, 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
— −22,559 63,328 $1,960,001

New Positions

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

Sold Out

Positions the filer fully exited
24 positions
Ticker Shares Value Open
— 2,714 $117,923
— 300 $106,359
— 408 $83,656
— 3,046 $51,782

Portfolio Positions

Export CSV View 13F filing
442 tracked positions · $867,649,863 total · filing declares 504 positions · $872,574,636 · as of Sep 30, 2026
Showing 1–50 of 442 positions by value · page 1 of 9
Ticker Company Shares Value (USD) % of Portfolio History

Showing the top 50 of 442 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.