Capstone Capital Management Ltd
SEC Form 13F institutional filer · CIK 0002069260
13F-HR · 29 reported holdings · 2026-03-31
Reported long-US-equity value
$0.07B
Top-10 concentration
78.4%
Capstone Capital Management Ltd — $74.6M AUM allocation strategy
Capstone Capital Management Ltd files SEC Form 13F and reports $74.6M of long US equity value across 29 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 70.8%, followed by Consumer Discretionary 7.8% and Communication Services 5.9%.
The top 10 holdings account for 78% 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.
Capstone Capital Management Ltd — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$74.6M
total across 29 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
78% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$INTC +204K sh · +$10.6M+$BSX +35.1K sh · +$644K+$SNPS +20.3K sh · +$6.86M
Biggest trims (shares)
−$AES −38.2K sh · −$619K−$XLP −29.6K sh · −$2.22M−$CL −3.71K sh · −$261K
Exited to nil (held last quarter, gone now)
$IVV ($7.85M last qtr)$NVDA ($3.51M last qtr)$XLE ($1.98M last qtr)$XLV ($1.97M last qtr)$ANET ($1.3M 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)
- Semiconductors30.3%—
- Application Software22.4%—
- Automobile Manufacturers7.0%—
- Interactive Media & Services5.9%—
- Technology Hardware, Storage & Peripherals5.4%—
- Communications Equipment4.0%—
- Systems Software3.4%—
- Electronic Components3.2%—
- Other holdings18.4%—
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 |
|---|---|---|---|---|---|
| $INTC | Intel Corporation | 424K | $18.7M | +204K | 25.1% |
| $SNPS | Synopsys Inc | 36.5K | $14.5M | +20.3K | 19.4% |
| $TSLA | Tesla Inc | 14K | $5.21M | +13.4K | 7.0% |
| $SNDK | Sandisk Corporation | 6.26K | $3.98M | — | 5.3% |
| $MU | Micron Technology Inc | 11.5K | $3.89M | — | 5.2% |
| $LITE | Lumentum Holdings Inc | 4.29K | $3.02M | — | 4.0% |
| $PANW | Palo Alto Networks Inc | 15.6K | $2.5M | +11.1K | 3.3% |
| $COHR | Coherent Corp | 10K | $2.39M | — | 3.2% |
| $ORCL | Oracle Corporation | 15.3K | $2.24M | +7.11K | 3.0% |
| $GOOGL | Alphabet Inc | 7.32K | $2.1M | +6.54K | 2.8% |
…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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