Stack Financial Management, Inc
SEC Form 13F institutional filer · CIK 0001308685
13F-HR · 46 reported holdings · 2026-03-31
SEC-registered institutional investment manager.
Reported long-US-equity value
$1.12B
Top-10 concentration
50.6%
Stack Financial Management, Inc — $1.12B AUM allocation strategy
Stack Financial Management, Inc files SEC Form 13F and reports $1.12B of long US equity value across 46 reported holdings for 2026-03-31.
Its largest sector bet is Industrials 16.0%, followed by Consumer Staples 13.3% and Energy 13.2%.
The top 10 holdings account for 51% 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.
Stack Financial Management, Inc — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$1.12B
total across 46 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
51% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$UPS +80.1K sh · +$7.77M+$T +4.6K sh · +$4.06M+$DUK +1.84K sh · +$2.83M
Biggest trims (shares)
−$NEM −46.1K sh · −$4.06M−$MSFT −41.6K sh · −$41.1M−$WMT −10.1K sh · +$11.9M
Exited to nil (held last quarter, gone now)
$CRM ($58.1M last qtr)$GPC ($10.1M last qtr)$AMT ($10.1M last qtr)$ACN ($650K last qtr)$JPM ($337K 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)
- Consumer Staples Merchandise Retail11.2%—
- Aerospace & Defense6.6%—
- Construction & Engineering6.3%—
- Systems Software6.1%—
- Electric Utilities5.5%—
- Multi-Utilities5.3%—
- Multi-Sector Holdings5.1%—
- Integrated Oil & Gas4.9%—
- Other holdings48.9%—
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 |
|---|---|---|---|---|---|
| $WMT | Walmart Inc | 1.01M | $125M | -10.1K | 11.2% |
| $PWR | Quanta Services Inc | 130K | $71.2M | +73 | 6.4% |
| $MSFT | Microsoft Corporation | 185K | $68.5M | -41.6K | 6.1% |
| $BRK.B | Berkshire Hathaway Inc.-Class B | 119K | $57.1M | +505 | 5.1% |
| $CVX | Chevron Corporation | 268K | $55.5M | -932 | 5.0% |
| $LHX | L3Harris Technologies Inc | 141K | $48.8M | -451 | 4.4% |
| $PSX | Phillips 66 | 217K | $39.6M | -188 | 3.5% |
| $AEP | American Electric Power Company Inc | 281K | $36.9M | -1.24K | 3.3% |
| $WM | Waste Management Inc | 146K | $33.6M | +364 | 3.0% |
| $CNP | CenterPoint Energy Inc | 719K | $31M | +1.57K | 2.8% |
…and 36 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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