CHECK CAPITAL MANAGEMENT INC/CA
SEC Form 13F institutional filer · CIK 0001032814
13F-HR · 32 reported holdings · 2026-03-31
Check Capital Management Inc/CA is a registered investment advisor.
Reported long-US-equity value
$0.70B
Top-10 concentration
98.6%
CHECK CAPITAL MANAGEMENT INC/CA — $698M AUM allocation strategy
CHECK CAPITAL MANAGEMENT INC/CA files SEC Form 13F and reports $698M of long US equity value across 32 reported holdings for 2026-03-31.
Its largest sector bet is Financials 76.3%, followed by Consumer Discretionary 6.3% and Communication Services 6.1%.
The top 10 holdings account for 99% 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.
CHECK CAPITAL MANAGEMENT INC/CA — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$698M
total across 32 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
99% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$AMZN +201K sh · +$41.7M+$BRK.B +5.88K sh · −$23M+$DIS +1.89K sh · −$7.41M
Biggest trims (shares)
−$BAC −67.7K sh · −$3.8M−$AAPL −2.32K sh · −$1.05M−$FDX −1.24K sh · −$292K
Added from nil (new positions)
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)
- Multi-Sector Holdings76.1%—
- Broadline Retail6.1%—
- Movies & Entertainment6.1%—
- Packaged Foods & Meats5.8%—
- Aerospace & Defense3.2%—
- Technology Hardware, Storage & Peripherals0.8%—
- Systems Software0.3%—
- Biotechnology0.2%—
- Other holdings1.5%—
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
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $BRK.B | Berkshire Hathaway Inc.-Class B | 1.11M | $531M | +5.88K | 76.1% |
| $AMZN | Amazon.com Inc | 204K | $42.5M | +201K | 6.1% |
| $DIS | Walt Disney Company | 439K | $42.3M | +1.89K | 6.1% |
| $HSY | The Hershey Company | 192K | $40M | +1.62K | 5.7% |
| $HONA | Honeywell Aerospace Inc | 29 | $20.8M | +0 | 3.0% |
| $AAPL | Apple Inc | 23.1K | $5.86M | -2.32K | 0.8% |
| $MSFT | Microsoft Corporation | 6.08K | $2.25M | -47 | 0.3% |
| $AMGN | Amgen Inc | 3.88K | $1.37M | +0 | 0.2% |
| $CAT | Caterpillar Inc | 1.72K | $1.22M | +0 | 0.2% |
| $GS | Goldman Sachs Group Inc | 1.23K | $1.04M | +0 | 0.1% |
…and 22 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.