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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
#2,754 / 8,819 ▼ 13 · as of Jun 2026
Top Industry
Internet Content & Information 7.4%
Period ended 29 days ago
Filed Oct 14, 2026 · 15d
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 129609
Roster of Oct 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 Oct 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
23.5% 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 19.1% 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 142 – 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

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.