J.M. Arbour, LLC
SEC Form 13F institutional filer · CIK 0002099154
13F-HR · 58 reported holdings · 2026-03-31
Reported long-US-equity value
$0.06B
Top-10 concentration
59.3%
J.M. Arbour, LLC — $56.5M AUM allocation strategy
J.M. Arbour, LLC files SEC Form 13F and reports $56.5M of long US equity value across 58 reported holdings for 2026-03-31.
Its largest sector bet is Financials 18.1%, followed by Information Technology 8.7% and Energy 8.1%.
The top 10 holdings account for 59% 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.
J.M. Arbour, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$56.5M
total across 58 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
59% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$IVV +86.2K sh · +$3.03M+$VZ +1.23K sh · +$228K+$GPN +929 sh · −$9.85K
Biggest trims (shares)
−$BLK −4.21K sh · −$393K−$SLB −3.39K sh · +$92.3K−$SPGI −1.88K sh · −$414K
Exited to nil (held last quarter, gone now)
$SPY ($667K last qtr)$IVZ ($554K last qtr)$IYY ($476K last qtr)$SJM ($445K last qtr)$RTX ($235K 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)
- Asset Management & Custody Banks7.2%—
- Financial Exchanges & Data6.0%—
- Oil & Gas Exploration & Production4.0%—
- Interactive Media & Services3.8%—
- Semiconductors3.5%—
- Technology Hardware, Storage & Peripherals2.9%—
- Integrated Oil & Gas2.6%—
- Multi-Sector Holdings2.3%—
- Other holdings67.9%—
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
9 of 9 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $BLK | BlackRock Inc | 46.1K | $4.03M | -4.21K | 7.1% |
| $SPGI | S&P Global Inc | 16K | $3.37M | -1.88K | 6.0% |
| $NVDA | NVIDIA Corporation | 11.5K | $2M | +625 | 3.5% |
| $AAPL | Apple Inc | 6.41K | $1.63M | +383 | 2.9% |
| $XOM | ExxonMobil Holdings Corporation | 8.43K | $1.43M | -1.24K | 2.5% |
| $APA | APA Corporation | 31.5K | $1.34M | — | 2.4% |
| $BRK.B | Berkshire Hathaway Inc.-Class B | 2.66K | $1.27M | +41 | 2.3% |
| $MSFT | Microsoft Corporation | 3.43K | $1.27M | +102 | 2.2% |
| $META | Meta Platforms Inc | 2.04K | $1.17M | -168 | 2.1% |
…and 49 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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