One Charles Private Wealth Services, LLC
SEC Form 13F institutional filer · CIK 0001800938
13F-HR · 83 reported holdings · 2026-03-31
Reported long-US-equity value
$0.20B
Top-10 concentration
69.0%
One Charles Private Wealth Services, LLC — $202M AUM allocation strategy
One Charles Private Wealth Services, LLC files SEC Form 13F and reports $202M of long US equity value across 83 reported holdings for 2026-03-31.
Its largest sector bet is Financials 34.0%, followed by Energy 18.8% and Information Technology 8.7%.
The top 10 holdings account for 69% 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.
One Charles Private Wealth Services, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$202M
total across 83 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
69% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$IVV +64.4K sh · +$4.47M+$BAC +8.03K sh · +$118K+$MPC +733 sh · +$143K
Biggest trims (shares)
−$SCHW −6.76K sh · −$1.21M−$XLF −4.95K sh · −$547K−$IVZ −2.65K sh · −$128K
Exited to nil (held last quarter, gone now)
$VRTX ($348K last qtr)$FICO ($254K last qtr)$TTD ($233K last qtr)$BKNG ($225K last qtr)$UNH ($223K 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)
- Multi-Sector Holdings22.9%—
- Oil & Gas Exploration & Production17.7%—
- Investment Banking & Brokerage7.9%—
- Technology Hardware, Storage & Peripherals3.8%—
- Diversified Banks3.1%—
- Semiconductors1.9%—
- Semiconductor Materials & Equipment1.9%—
- Aerospace & Defense1.3%—
- Other holdings39.5%—
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
7 of 7 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $BRK.B | Berkshire Hathaway Inc.-Class B | 96.8K | $46.4M | -406 | 22.9% |
| $TPL | Texas Pacific Land Corporation | 75.6K | $35.9M | -640 | 17.7% |
| $SCHW | Charles Schwab Corporation | 587K | $16.1M | -6.76K | 8.0% |
| $AAPL | Apple Inc | 30.1K | $7.64M | +115 | 3.8% |
| $NVDA | NVIDIA Corporation | 22.2K | $3.87M | +341 | 1.9% |
| $LRCX | Lam Research Corporation | 17.8K | $3.81M | -22 | 1.9% |
| $JPM | JP Morgan Chase & Co | 12.5K | $3.68M | +80 | 1.8% |
…and 76 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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