BERKSHIRE HATHAWAY INC
"13F equity value" = market value of this filer's US-listed long equity positions only. It excludes cash, bonds, non-US and short positions, so it understates a fund's true assets under management — often by a lot.
13F holdings are disclosed ~45 days after quarter-end, and they never reveal when within the quarter a fund actually bought. So any 13F-based summary is structurally late and blurred — this applies to every fund, including this one.
We backtested copying it anyway. Buying this fund's new positions the day each filing went public, over 18 quarters, returned +2.0% per quarter — versus +2.5% per quarter from simply owning every 13F stock. It beat that baseline in only 44.4% of quarters (excess t = -1.51, not statistically significant). Its filings tell you what it bought — not what you should buy.
Quarterly compounding, invested quarters only · entry 47 days after quarter-end (when 13F data becomes public)
Top 20 holdings of 29 · 2026 Q1
| Ticker | Value | Weight | QoQ |
|---|---|---|---|
| AAPL | $57.8B | | HOLD |
| AXP | $45.9B | | HOLD |
| KO | $30.4B | | HOLD |
| BAC | $25.0B | | HOLD |
| CVX | $17.5B | | TRIM |
| OXY | $17.2B | | HOLD |
| GOOGL | $15.6B | | ADD |
| CB | $11.2B | | HOLD |
| MCO | $10.8B | | HOLD |
| KHC | $7.3B | | HOLD |
| DVA | $4.6B | | TRIM |
| KR | $3.6B | | HOLD |
| SIRI | $2.9B | | HOLD |
| DAL | $2.6B | | NEW |
| VRSN | $2.2B | | HOLD |
| COF | $1.3B | | HOLD |
| NYT | $1.3B | | ADD |
| ALLY | $1.1B | | HOLD |
| GOOG | $1.0B | | NEW |
| LLYVK | $996M | | TRIM |
QoQ vs previous quarter's share count · NEW = new position · ADD/TRIM = ±2% shares · HOLD = unchanged.
New positions in 2026 Q1
Method & Limitations
Method: a "new position" = held this quarter, absent last quarter (options excluded; stocks with <50 prior holders excluded to filter spin-off artifacts). Entry 47 days after quarter-end — the first day the public could act on the filing. Benchmark = equal-weighted universe of all 13F-held stocks. Limitations: quarterly snapshots can't see intra-quarter trades; survivorship bias — funds that shut down are absent, which flatters the sample. Statistics, not advice.