Berkshire Hathaway Takes Near‑10% Stake in Lennar, Sending Shares Higher

Berkshire Hathaway disclosed purchases of about $212.4 million of Lennar stock made between September 17 and September 21, and the same filings confirm that its overall holding in the homebuilder has crossed the 10% ownership mark. Those two numbers describe different things and are easy to run together. The purchase itself covered roughly 2.67 million Class A shares and 75,021 Class B shares at prices between $74.80 and $79.41. The position it added to now stands at about 23.7 million Class A shares plus 528,217 Class B shares, worth roughly $1.9 billion, so the 10% figure is the cumulative stake rather than the size of this week's buy.

The mechanism behind the disclosure is worth understanding, because it changes what investors will see next. Berkshire filed a Form 3 identifying September 17 as the date it became subject to reporting as a 10% owner, followed by a Form 4 after the September 21 close detailing the transactions. Crossing that threshold moves Berkshire from reporting this name quarterly on a 13F to reporting it within days on Section 16 filings, so any further adds or trims in LEN should become visible almost immediately rather than at quarter's end.

The market response built through Tuesday rather than arriving overnight. Earlier coverage captured a modest overnight and premarket bump, with outlets disagreeing on the exact premarket figure, but the substantive move came in the regular session: Lennar closed up 6.4% at $83.06 on September 22, according to SentiSense market data. One divergence is worth flagging, since it is the kind of thing a single-day price move hides. Our own sentiment reading on Lennar sat at -0.42, clearly bearish, on the same day the stock rose 6.4%, which suggests the rally is being driven by the identity of the buyer rather than by any shift in how the housing narrative is being written.

The valuation case is checkable from the company's own numbers. On the fiscal Q3 2026 balance sheet, $21.6 billion of shareholders' equity across 237.8 million weighted-average shares works out to about $90.68 of book value per share, so a $83.06 close leaves Lennar at roughly 0.92 times book, an 8% discount, which is the argument a Seeking Alpha contributor piece in this cluster makes at length. The operating picture behind that book value is mixed rather than distressed: Q3 revenue of $8.05 billion produced $284 million of net income and $1.19 of diluted EPS at a 16.6% gross margin, with debt to equity at 0.20.

What to watch from here is straightforward. Because of the Section 16 threshold, further Berkshire activity in Lennar will now be reported in near real time, which makes the next few weeks of filings the most direct read available on whether this was an opportunistic add at a discount to book or the start of a larger position. A stake near 10% also gives Berkshire standing it did not have before, so any commentary from Lennar management about its new largest-tier shareholder may matter more than the price move itself.