Banque de Luxembourg S.A.
SEC Form 13F institutional filer · CIK 0002055344
13F-HR · 63 reported holdings · 2026-03-31
Reported long-US-equity value
$0.17B
Top-10 concentration
69.7%
Banque de Luxembourg S.A. — $171M AUM allocation strategy
Banque de Luxembourg S.A. files SEC Form 13F and reports $171M of long US equity value across 63 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 31.4%, followed by Communication Services 14.7% and Health Care 11.7%.
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.
Banque de Luxembourg S.A. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$171M
total across 63 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
70% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$BDX +6.77K sh · +$116K+$MSFT +1.23K sh · −$4.39M+$MCD +971 sh · +$305K
Biggest trims (shares)
−$CMCSA −92K sh · −$2.76M−$CSCO −31.2K sh · −$2.38M−$GOOG −11K sh · −$5.19M
Exited to nil (held last quarter, gone now)
$KKR ($383K last qtr)$MRVL ($372K last qtr)$ROK ($213K last qtr)$QCOM ($205K last qtr)$BKNG ($145K 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 & Services13.1%—
- Systems Software9.5%—
- Health Care Equipment7.9%—
- Transaction & Payment Processing Services6.1%—
- Semiconductors6.0%—
- Broadline Retail6.0%—
- Technology Hardware, Storage & Peripherals5.6%—
- IT Consulting & Other Services5.1%—
- Other holdings40.8%—
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
9 of 9 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $GOOG | Alphabet Inc. Class C Capital Stock | 69.2K | $19.9M | -11K | 11.6% |
| $MSFT | Microsoft Corporation | 43.9K | $16.3M | +1.23K | 9.5% |
| $V | Visa Inc | 34.5K | $10.4M | -678 | 6.1% |
| $AMZN | Amazon.com Inc | 48.7K | $10.1M | -1.55K | 5.9% |
| $AAPL | Apple Inc | 38K | $9.64M | -1.04K | 5.6% |
| $ACN | Accenture plc | 43.4K | $8.61M | -1.12K | 5.0% |
| $MDT | Medtronic plc | 96.7K | $8.38M | -10.6K | 4.9% |
| $SPGI | S&P Global Inc | 15.6K | $6.62M | -287 | 3.9% |
| $UNH | UnitedHealth Group Incorporated | 24.2K | $6.55M | -509 | 3.8% |
…and 54 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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