Stonebrook Private Inc.
SEC Form 13F institutional filer · CIK 0002008738
13F-HR · 143 reported holdings · 2026-03-31
Reported long-US-equity value
$0.23B
Top-10 concentration
50.2%
Stonebrook Private Inc. — $235M AUM allocation strategy
Stonebrook Private Inc. files SEC Form 13F and reports $235M of long US equity value across 143 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 19.6%, followed by Financials 7.4% and Consumer Discretionary 4.6%.
The top 10 holdings account for 50% 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.
Stonebrook Private Inc. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$235M
total across 143 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
50% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$SPYM +120K sh · +$8.09M+$NVDA +4.58K sh · +$69K+$F +2.05K sh · −$389
Biggest trims (shares)
−$IVZ −314K sh · −$19.2M−$IVV −197K sh · −$13.3M−$XLK −22.8K sh · −$3.55M
Exited to nil (held last quarter, gone now)
$INTU ($235K last qtr)$ACN ($225K last qtr)$PGR ($215K last qtr)$QCOM ($212K last qtr)$BSX ($209K 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)
- Semiconductors7.5%—
- Technology Hardware, Storage & Peripherals7.4%—
- Asset Management & Custody Banks5.2%—
- Systems Software4.7%—
- Interactive Media & Services4.1%—
- Broadline Retail3.3%—
- Pharmaceuticals2.7%—
- Diversified Banks2.1%—
- Other holdings63.0%—
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 |
|---|---|---|---|---|---|
| $AAPL | Apple Inc | 68.3K | $17.3M | +69 | 7.4% |
| $IVZ | Invesco Ltd | 127K | $12.2M | -314K | 5.2% |
| $NVDA | NVIDIA Corporation | 64.9K | $11.3M | +4.58K | 4.8% |
| $MSFT | Microsoft Corporation | 30K | $11.1M | -722 | 4.7% |
| $AMZN | Amazon.com Inc | 37.2K | $7.76M | -2.14K | 3.3% |
| $AVGO | Broadcom Inc | 20.1K | $6.23M | +443 | 2.7% |
| $JPM | JP Morgan Chase & Co | 16.8K | $4.95M | -131 | 2.1% |
| $ITW | Illinois Tool Works Inc | 18.9K | $4.91M | +282 | 2.1% |
…and 135 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.