CIK 1953324
Long positions in SEC Section 13(f) securities (US-listed stocks, ADRs and ETFs), largest first · Δ vs 2025-Q4. A lagged quarterly snapshot (filed ≤45 days after quarter-end); excludes shorts, options, cash, and shares listed only on non-US exchanges — foreign companies held via a US listing or ADR (e.g. Alibaba, TSMC) ARE included.
As filed = each book applied at its quarter-end (what the reported book did) · As copyable = applied at its statutory 45-day filing deadline (what a 13F follower could have earned).
Computing…
Hypothetical modeled performance constructed with hindsight — not actual results, and not indicative of future results. See the Disclaimer.
| Industry group | Weight | Names |
|---|---|---|
| Unclassified | 57.89% | 3 |
| Commercial Services & Supplies | 23.48% | 2 |
| Banks | 14.53% | 1 |
| Media & Publishing | 4.10% | 1 |
| # | Ticker | Name | Sector | Weight |
|---|---|---|---|---|
| 1 | BRK.B | BERKSHIRE HATHAWAY INC | Financials | 34.57% |
| 2 | BRK.A | BERKSHIRE HATHAWAY INC DEL | Unclassified | 15.92% |
| 3 | MA | Mastercard Inc | Financials | 14.77% |
| 4 | AXP | AMERICAN EXPRESS CO | Financials | 14.53% |
| 5 | MCO | MOODYS CORP /DE/ | Industrials | 8.71% |
| 6 | RACE | Ferrari N.V. | Consumer Discretionary | 7.40% |
| 7 | DJCO | DAILY JOURNAL CORP | Communication Services | 4.10% |
6/7 names classified · sector 84.1% of weight · industry 42.1% · mkt cap 76.7%; unclassified names shown, never dropped.
Sector is classified on each name's CURRENT fundamentals, not point-in-time — apparent sector drift can reflect the market re-rating a holding, not a manager trade. 13F is a lagged quarterly snapshot of long positions in US-listed securities only — foreign companies held via a US listing or ADR ARE included, but shares listed only on non-US exchanges (plus shorts, options and cash) are not. Latest quarter: 84.1% of the book is sector-classified (unclassified names shown, never dropped).
Only 42% of book weight classified — the grid is NOT representative of the whole book.
Classified: 42.1% of book weight (4/7 names) · unclassified 57.9%: BRK.B, BRK.A, RACE. Size: cap 70/20/10 bands; style: value/growth composite on our own metrics — not Morningstar's model.
No contribution data for this period.
| # | Security | Shares | Value | Weight | Δ QoQ |
|---|---|---|---|---|---|
| 1 | BRK.BBERKSHIRE HATHAWAY INC DEL | 97,600 | $47M | 34.6% | HOLD |
| 2 | BRK.ABERKSHIRE HATHAWAY INC DEL | 30 | $22M | 15.9% | HOLD |
| 3 | MAMASTERCARD INCORPORATED | 40,000 | $20M | 14.8% | HOLD |
| 4 | AXPAMERICAN EXPRESS CO | 65,000 | $20M | 14.5% | HOLD |
| 5 | MCOMOODYS CORP | 27,000 | $12M | 8.7% | HOLD |
| 6 | RACEFERRARI N V | 30,000 | $10M | 7.4% | HOLD |
| 7 | DJCODAILY JOURNAL CORP | 11,500 | $6M | 4.1% | HOLD |
| Security | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| BRK.BBERKSHIRE HATHAWAY INC DEL | 141K | 141K | 141K | 141K | 98K | 98K | $47M |
| BRK/ABERKSHIRE HATHAWAY INC DEL | 30 | 30 | 30 | 30 | 30 | 30 | $22M |
| MAMASTERCARD INCORPORATED | 66K | 66K | 66K | 66K | 40K | 40K | $20M |
| AXPAMERICAN EXPRESS CO | 210K | 210K | 210K | 210K | 65K | 65K | $20M |
| MCOMOODYS CORP | 27K | 27K | 27K | 27K | 27K | 27K | $12M |
| RACEFERRARI N V | 60K | 60K | 60K | 60K | 30K | 30K | $10M |
| DJCODAILY JOURNAL CORP | 12K | 12K | 12K | 12K | 12K | 12K | $6M |
Shares reported each quarter by the largest current holdings. Green = added vs the prior filing of that name, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Where this firm's principals came from and which firms its alumni went on to found.
