Castlefield Investment Partners LLP
SEC Form 13F institutional filer · CIK 0002109835
13F-HR · 29 reported holdings · 2026-03-31
Reported long-US-equity value
$0.11B
Top-10 concentration
62.2%
Castlefield Investment Partners LLP — $111M AUM allocation strategy
Castlefield Investment Partners LLP files SEC Form 13F and reports $111M of long US equity value across 29 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 29.4%, followed by Financials 18.9% and Communication Services 17.7%.
The top 10 holdings account for 62% 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.
Castlefield Investment Partners LLP — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$111M
total across 29 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
62% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$NFLX +11.2K sh · −$2.82M+$SNA +9.06K sh · −$110K+$BSX +6.24K sh · −$5.7M
Added from nil (new positions)
None this quarter
Exited to nil (held last quarter, gone now)
None this quarter
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)
- Semiconductors9.6%—
- Financial Exchanges & Data9.0%—
- Interactive Media & Services8.5%—
- Technology Hardware, Storage & Peripherals8.2%—
- Systems Software6.8%—
- Transaction & Payment Processing Services5.1%—
- Agricultural & Farm Machinery4.9%—
- Semiconductor Materials & Equipment4.8%—
- Other holdings43.0%—
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
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $NVDA | NVIDIA Corporation | 60.8K | $10.6M | +2.6K | 9.6% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 33K | $9.5M | +1.09K | 8.6% |
| $AAPL | Apple Inc | 35.4K | $8.98M | +1.99K | 8.1% |
| $MSFT | Microsoft Corporation | 20.3K | $7.5M | +3.45K | 6.8% |
| $V | Visa Inc | 18.5K | $5.61M | +1.95K | 5.1% |
| $DE | Deere & Company | 9.65K | $5.43M | +326 | 4.9% |
| $KLAC | KLA Corporation | 3.64K | $5.36M | -2.17K | 4.8% |
| $CB | Chubb Limited | 16.3K | $5.31M | +884 | 4.8% |
| $MRK | Merck & Company Inc | 43.7K | $5.26M | +1.59K | 4.8% |
| $MCO | Moody's Corporation | 11.8K | $5.17M | +1.14K | 4.7% |
…and 19 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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