THOMPSON INVESTMENT MANAGEMENT, INC.
SEC Form 13F institutional filer · CIK 0001277279
13F-HR · 237 reported holdings · 2026-03-31
Reported long-US-equity value
$0.62B
Top-10 concentration
30.6%
THOMPSON INVESTMENT MANAGEMENT, INC. — $625M AUM allocation strategy
THOMPSON INVESTMENT MANAGEMENT, INC. files SEC Form 13F and reports $625M of long US equity value across 237 reported holdings for 2026-03-31.
Its largest sector bet is Communication Services 11.0%, followed by Financials 10.3% and Information Technology 9.7%.
The top 10 holdings account for 31% of reported value — a broadly spread portfolio. The sector and industry splits below are of the same reported value. Track quarter-over-quarter adds, trims, new positions and exits below — sourced from SEC 13F filings, public domain.
THOMPSON INVESTMENT MANAGEMENT, INC. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$625M
total across 237 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
31% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$PYPL +47.8K sh · −$231K+$DIS +35.9K sh · +$3.06M+$PG +26.4K sh · +$3.86M
Biggest trims (shares)
−$WBD −556K sh · −$16.8M−$GLW −48.8K sh · −$3.96M−$KEYS −20.5K sh · −$2.23M
Exited to nil (held last quarter, gone now)
$LMT ($40.1K last qtr)$GPC ($27.7K last qtr)$ZTS ($8.93K last qtr)$MA ($7.42K last qtr)$PPL ($3.68K last qtr)
Sector allocation (share of reported value)
each slice is a share of the reported long-US-equity value — smaller sectors and the rest of the book roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Industry allocation (share of reported value)
- Interactive Media & Services8.4%—
- Diversified Banks6.4%—
- Pharmaceuticals6.4%—
- Systems Software4.2%—
- Integrated Oil & Gas4.1%—
- Broadcasting2.6%—
- Investment Banking & Brokerage2.2%—
- Semiconductors1.9%—
- Other holdings63.8%—
the finer GICS cut of the same book — same denominator — smaller industries roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Top S&P 500 holdings
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $GOOG | Alphabet Inc. Class C Capital Stock | 143K | $41.2M | -3.38K | 6.6% |
| $MSFT | Microsoft Corporation | 71.1K | $26.3M | +5.73K | 4.2% |
| $XOM | ExxonMobil Holdings Corporation | 151K | $25.5M | -4.08K | 4.1% |
| $WBD | Warner Bros. Discovery Inc. Series A | 583K | $16M | -556K | 2.6% |
| $C | Citigroup Inc | 140K | $15.9M | -3.18K | 2.5% |
| $VTRS | Viatris Inc | 1.11M | $14.9M | -7.32K | 2.4% |
| $SCHW | Charles Schwab Corporation | 250K | $13.8M | +6.44K | 2.2% |
| $PFE | Pfizer Inc | 464K | $13M | +716 | 2.1% |
| $JPM | JP Morgan Chase & Co | 49.5K | $12.6M | +125 | 2.0% |
| $QCOM | QUALCOMM Incorporated | 95.1K | $12.2M | +13K | 2.0% |
…and 227 more holdings in the full 13F filing (top positions only shown).
SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · as reported
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How to read Δ QoQ — the five insight categories, and the caveats
The categories. Analysts, quants and retail traders look past total portfolio value to isolate actionable signals. Five categories matter.
Conviction & concentration shifts
New positions vs complete exits — a brand-new stock signals high conviction; a full liquidation suggests a broken thesis or tax-loss harvesting. Aggressive sizing — look at share count, not dollars: a 20% share increase during a drawdown is strong dip-buying. Concentration — a narrowing top-5/10 means conviction; spreading capital across more names means hedging.
Sector & macro allocation rotations
Aggregating Δ QoQ moves across sectors shows where smart money is leaning in or sneaking out — rotating out of growth into defensives or energy, for example. The fund's total long equity exposure quarter-over-quarter is a proxy for overall institutional risk appetite.
Crowding & smart-money consensus
When several managers initiate or expand the same stock in the same quarter, that is institutional consensus. Contrarian reads: top pickers buying hard into a beaten-down name the market is selling.
Derivative & option overlays
Reported call/put changes indicate whether managers are adding downside hedges or leveraging upside exposure. Note: a long increase may be half of a market-neutral pair trade.
Who reads this
| Retail "cloners" | High-conviction ideas to replicate ~45 days after quarter-end. |
| Corporate IR | Which funds bought or dumped the stock, before the next call. |
| Quant / algo traders | Cross-sectional factor inputs: flow, momentum, ownership. |
Four caveats before you trade on it
- 45-day lag — holdings are quarter-end; positions may already be closed.
- Long-only — 13Fs miss shorts, pair trades and cash.
- No non-US / fixed income — the picture is US equities plus options.
- Corporate actions — splits and spinoffs distort raw share deltas.
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