Polaris Capital Management, LLC
SEC Form 13F institutional filer · CIK 0001316926
13F-HR · 19 reported holdings · 2026-03-31
Reported long-US-equity value
$0.53B
Top-10 concentration
71.4%
Polaris Capital Management, LLC — $533M AUM allocation strategy
Polaris Capital Management, LLC files SEC Form 13F and reports $533M of long US equity value across 19 reported holdings for 2026-03-31.
Its largest sector bet is Health Care 22.3%, followed by Materials 21.8% and Financials 20.5%.
The top 10 holdings account for 71% of reported value — a conviction-weighted book concentrated in its best ideas. 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.
Polaris Capital Management, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$533M
total across 19 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
71% of value
higher = narrower conviction; lower = spread / hedging
Biggest trims (shares)
−$SW −81.1K sh · −$1.52M−$TSN −20.9K sh · +$1.23M−$NEE −17.6K sh · +$2.26M
Added from nil (new positions)
None this quarter
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)
- Industrial Gases11.6%—
- Biotechnology11.4%—
- Paper & Plastic Packaging Products & Materials10.2%—
- Oil & Gas Refining & Marketing7.1%—
- Health Care Services7.0%—
- Diversified Banks6.5%—
- IT Consulting & Other Services5.8%—
- Aerospace & Defense5.6%—
- Other holdings34.8%—
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 |
|---|---|---|---|---|---|
| $LIN | Linde plc | 125K | $61.8M | -9.3K | 11.6% |
| $SW | Smurfit WestRock plc | 1.37M | $54.5M | -81.1K | 10.2% |
| $MPC | Marathon Petroleum Corporation | 156K | $38.1M | -8.1K | 7.1% |
| $CVS | CVS Health Corporation | 518K | $37.2M | -7.6K | 7.0% |
| $GILD | Gilead Sciences Inc | 252K | $35.1M | -12.9K | 6.6% |
| $JPM | JP Morgan Chase & Co | 118K | $34.6M | +297 | 6.5% |
| $IBM | International Business Machines Corporation | 463K | $31.2M | -14.3K | 5.8% |
| $GD | General Dynamics Corporation | 87.4K | $30M | -2.1K | 5.6% |
| $WMB | Williams Companies Inc | 399K | $29M | -12.6K | 5.5% |
| $TSN | Tyson Foods Inc | 451K | $28.9M | -20.9K | 5.4% |
…and 9 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
← All 13F filers·← QuantOrb.pro
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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