Why Did Buffett Triple His Alphabet Stake? Reading the Filing
Berkshire Hathaway's latest 13F, filed 15 May 2026 for the quarter ending 31 March, contains one move that dwarfs the rest in significance: the Alphabet stake grew by 204%, to $15.6 billion, now 5.9% of the entire book. A new Class C line worth $1.0 billion appeared beside it.
The most crowded holdings among 105 funds
Counted from the 13F filings themselves. Microsoft is held by more of the funds we track than any other company, which is exactly what makes it a crowded trade rather than a clever one.
Source: SteadyShares analysis of 107,302 SEC 13F holdings, Q1 2026
The mechanics
A 204% increase means the position roughly tripled. This was not a nibble. Alongside it, Berkshire opened a $2.6 billion position in Delta Air Lines and cut Chevron by 35%. Read together, the quarter looks like a rotation: out of oil, into a business with an advertising moat and a cash pile.
Why it matters more than a normal buy
Buffett famously called passing on Google one of his mistakes, and Berkshire's tech exposure has been overwhelmingly a single name for years. Tripling Alphabet while trimming energy is the clearest signal in the filing that the mix is changing. It is also worth remembering that Berkshire's investment decisions are increasingly not Buffett's alone.
The honest caveats
A 13F is up to 45 days old when you read it, shows only US-listed longs, and does not say why. Anyone telling you the reason is guessing. The filing tells you what, at what size, and when. That is a lot, and it is free.
See the whole book
Berkshire's 29 positions with weights and quarter-over-quarter changes, plus 100+ other funds, are on [SteadyShares's Smart Money desk](/app/gurus), read straight from the SEC.
Educational information, not financial advice.
The bottom line
Berkshire's Alphabet position grew 204% in one quarter, from a $5bn footnote to a $15.6bn conviction. Here is what the filing actually shows.
We publish the underlying analysis, with the method and the limitations printed next to it, in our 13F research. If you want the theory first, start with what a 13F cannot tell you.
This is educational information, not financial advice.
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