BUFFALO BUSINESS & ESTATE SERVICES LTD
SEC Form 13F institutional filer · CIK 0002103405
13F-HR · 60 reported holdings · 2026-03-31
Reported long-US-equity value
$0.46B
Top-10 concentration
74.3%
BUFFALO BUSINESS & ESTATE SERVICES LTD — $457M AUM allocation strategy
BUFFALO BUSINESS & ESTATE SERVICES LTD files SEC Form 13F and reports $457M of long US equity value across 60 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 34.3%, followed by Communication Services 13.1% and Consumer Discretionary 8.2%.
The top 10 holdings account for 74% 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.
BUFFALO BUSINESS & ESTATE SERVICES LTD — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$457M
total across 60 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
74% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$NFLX +91.5K sh · +$9.16M+$IVV +62.3K sh · +$5.65M+$AMZN +47.8K sh · +$6.97M
Biggest trims (shares)
−$PLTR −79.2K sh · −$14.3M−$GOOG −8.67K sh · −$5.21M−$CVX −3.85K sh · +$674K
Exited to nil (held last quarter, gone now)
$CEG ($3.94M last qtr)$CRM ($413K last qtr)$IBM ($331K last qtr)$TMUS ($319K last qtr)$CMG ($316K 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)
- Semiconductors21.9%—
- Broadline Retail8.2%—
- Interactive Media & Services8.1%—
- Technology Hardware, Storage & Peripherals7.7%—
- Movies & Entertainment5.0%—
- Systems Software3.6%—
- Pharmaceuticals3.4%—
- Financial Exchanges & Data1.8%—
- Other holdings40.3%—
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
8 of 8 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $NVDA | NVIDIA Corporation | 518K | $90.4M | +2.49K | 19.8% |
| $AMZN | Amazon.com Inc | 180K | $37.6M | +47.8K | 8.2% |
| $AAPL | Apple Inc | 139K | $35.4M | +2.27K | 7.7% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 98.3K | $28.3M | -8.67K | 6.2% |
| $NFLX | Netflix Inc | 242K | $23.3M | +91.5K | 5.1% |
| $LLY | Eli Lilly and Company | 10.4K | $9.52M | -209 | 2.1% |
| $AVGO | Broadcom Inc | 30.7K | $9.51M | +2.37K | 2.1% |
| $META | Meta Platforms Inc | 15.1K | $8.61M | +1.34K | 1.9% |
…and 52 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.
Newsletter signup
Free subscription. Daily trading day morning dispatch. No spam.