Berkshire's own filings show $539.1m more buying than selling on the open market. The quarterly holdings book behind it only runs to 2026Q2, so it is weeks behind the trades.
The filings show far more buying than selling
Start with the one number that is hard to miss. Berkshire's own filing A form an investor must send to the market regulator to report trades or holdings. Anyone can read it once it is published.s show $539.1m more buying than selling on the open market. Each filing is a form sent to the regulator soon after a trade is done. The count was 48 open-market Buying or selling shares on the stock exchange like any other investor, rather than receiving them as pay or a gift. purchases. Sales numbered just 2.
The quarterly report of large holdings tells you where the money already sits. Berkshire listed 29 positions The separate stocks an investor owns. One position means one company's shares. at the end of 2026Q2. The ten largest made up 88.5% of that reported stock book. So the money is parked in a short list of names, not spread thin across hundreds of them.
Glossary
- filing
- A form an investor must send to the market regulator to report trades or holdings. Anyone can read it once it is published.
- positions
- The separate stocks an investor owns. One position means one company's shares.
- open-market
- Buying or selling shares on the stock exchange like any other investor, rather than receiving them as pay or a gift.
The quarter before the news was mostly a swap, not a spree
Now look at the quarter before this news. Berkshire added to 7 holdings. It trimmed 6 others. Just 1 position was brand new. And 1 holding was closed out completely. The chart puts a dollar size on each move, and the largest additions dwarf the largest cut. Lennar's own bar sits on the buying side, but it is a small bar next to the biggest ones.
Data table
| name | change_value |
|---|---|
| ALPHABET INC（CAP STK CL A） | $8.8bn |
| ALPHABET INC（CAP STK CL C） | $8.3bn |
| DELTA AIR LINES INC | $1.6bn |
| LENNAR CORP（CL A） | $272.6m |
| MACYS INC | $101.5m |
| ALLY FINL INC | -$91.9m |
| CONSTELLATION BRANDS INC | -$94.9m |
| DAVITA INC | -$271.5m |
| NUCOR CORP | -$456.5m |
| KROGER CO | -$610.8m |
| CAPITAL ONE FINL CORP | -$832.6m |
| BANK OF AMER CORP | -$1.7bn |
Two warnings come with that chart, and they matter more than the bars. The quarterly list shows what was held on the last day of the quarter and is published weeks later, so trades made after that day are not in it. The dollar size of each change is the share count change valued at the quarter's closing price, not the price actually paid. These figures run through 2026Q2, the last period in the data, so the October buying of homebuilder shares is not in them yet.
Quick quiz
A quarterly holdings report is published. What does it tell you?
Why：It is a snapshot of the past. Every trade made after the quarter's last day stays invisible until the next report arrives.
Show answer
What was owned on the last day of that quarter It is a snapshot of the past. Every trade made after the quarter's last day stays invisible until the next report arrives.
The smaller stock moved more, and it moved after the trades
How far ahead of the market did Lennar shares sit in the window around this news?
Actual12.5%
In the same window, Lennar ran 12.5% ahead of the market. The surprising part is the timing: the buying had already finished before most readers saw a word about it.
Show answer
12.5% In the same window, Lennar ran 12.5% ahead of the market. The surprising part is the timing: the buying had already finished before most readers saw a word about it.
Only 2 stocks were measured around the news. In the same window, Lennar ran 12.5% ahead of the market. Berkshire's own shares sat 2.7% ahead over the same days. Lennar was the bigger mover of the two. My reading is that a smaller company shows a wider swing when a very large buyer turns up in its share register, but nothing here measures that link.
Data table
| name | car_post | series_role |
|---|---|---|
| Lennar | 12.5% | peer |
| Berkshire Hathaway | 2.7% | target |
Stretch the window and the picture is less flattering. Over the year to 2026-10-23, Berkshire shares returned 10.6%. The market returned 14.4% over the same year. So a few strong days around the news sit inside a year that trailed the market.
Keep the order of events in mind. The last trade in this run was dated Oct. 2, and the story reached readers more than two weeks later. So the price on your screen today is not the price the filer paid. What to watch is the next quarterly filing, and whether the holding is still listed there.
Risks
- Disclosed holdings are already weeks old; this book only reaches 2026Q2.
- Filings leave out short positions, option detail and holdings outside the US.
- Following a filing is not the same as holding the stock at the same time.
Sources
- SEC EDGAR Form 13F-HR: BERKSHIRE HATHAWAY INC — data as of 2026-06-30; fetched 2026-10-24 18:42 UTC
- FinMind USStockPrice SPY — data as of 2026-10-23; fetched 2026-10-24 18:42 UTC; License note: FinMind open data; original source TWSE/TPEx or US exchanges
- FinMind USStockPrice BRK-B — data as of 2026-10-23; fetched 2026-10-24 18:42 UTC; License note: FinMind open data; original source TWSE/TPEx or US exchanges
- FinMind USStockPrice LEN — data as of 2026-10-23; fetched 2026-10-24 18:42 UTC; License note: FinMind open data; original source TWSE/TPEx or US exchanges