M.D. Sass, LLC
SEC Form 13F institutional filer · CIK 0000922940
13F-HR · 25 reported holdings · 2026-03-31
M.D. Sass, LLC is an asset management firm.
Reported long-US-equity value
$0.91B
Top-10 concentration
70.1%
M.D. Sass, LLC — $915M AUM allocation strategy
M.D. Sass, LLC files SEC Form 13F and reports $915M of long US equity value across 25 reported holdings for 2026-03-31.
Its largest sector bet is Health Care 20.8%, followed by Financials 17.3% and Industrials 16.4%.
The top 10 holdings account for 70% 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.
M.D. Sass, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$915M
total across 25 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
70% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$AMZN +96.5K sh · +$16.3M+$ICE +51.7K sh · +$6.62M+$COF +48.8K sh · −$5.73M
Biggest trims (shares)
−$WMB −166K sh · +$4.91M−$DHR −104K sh · −$31.7M−$PWR −28.2K sh · −$3.86M
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)
- Health Care Distributors10.3%—
- Oil & Gas Storage & Transportation9.3%—
- Application Software8.5%—
- Electrical Components & Equipment8.4%—
- Construction Materials6.7%—
- Financial Exchanges & Data6.5%—
- Health Care Services6.4%—
- Broadline Retail6.0%—
- Other holdings37.9%—
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 |
|---|---|---|---|---|---|
| $HSIC | Henry Schein Inc | 1.27M | $93.8M | +35.4K | 10.3% |
| $WMB | Williams Companies Inc | 1.17M | $85.4M | -166K | 9.3% |
| $AME | AMETEK Inc | 362K | $77.6M | -17.2K | 8.5% |
| $MLM | Martin Marietta Materials Inc | 103K | $60.7M | +11.9K | 6.6% |
| $ICE | Intercontinental Exchange Inc | 374K | $58.9M | +51.7K | 6.4% |
| $DGX | Quest Diagnostics Incorporated | 299K | $58.7M | — | 6.4% |
| $AMZN | Amazon.com Inc | 264K | $55M | +96.5K | 6.0% |
| $COF | Capital One Financial Corporation | 293K | $53.4M | +48.8K | 5.8% |
| $WELL | Welltower Inc | 256K | $50.5M | -17.4K | 5.5% |
| $FICO | Fair Isaac Corporation | 44.2K | $47.2M | +11.3K | 5.2% |
…and 15 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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