Market Rotation Hits Alphabet As Berkshire Sells DaVita

The $500 billion tech valuation drop forces institutional investors to re-examine their equity positions and buyback strategies.

Updated on Oct. 31, 2026 in Public Companies

Bold flat-color editorial illustration of a balancing steel structure, evoking the institutional recalibration of market portfolios. — Berkshire Hathaway rebalanced its portfolio as Alphabet shares struggled amid broader market rotation and tech-sector valuation pressure this week. AI Illustration. Upload story photo >

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Berkshire Hathaway adjusted its portfolio this week by selling $69 million in DaVita shares while experiencing a decline in the value of its Alphabet stake. The shift reflects broader market volatility, including a $500 billion valuation drop for Alphabet, impacting major institutional holdings.

Why it matters

Operators should note how large-cap firms balance equity stakes against buyback activity and market rotation. These movements highlight the ongoing pressure on companies like Alphabet, which reported negative free cash flow of $9.1 billion in the third quarter.

Berkshire Hathaway sold $69 million of DaVita shares to keep its holdings at or below 45%, while its own portfolio saw Alphabet's value slide to $29.6 billion. The move follows Q2 2026 buybacks of $4.5 billion of Berkshire's own shares.

The players

Berkshire Hathaway

A multinational conglomerate holding company that manages a diverse portfolio of insurance, energy, and retail subsidiaries.

Alphabet

A global technology leader primarily focused on search, advertising, cloud computing, and hardware development.

DaVita

A healthcare provider specializing in kidney care and dialysis services across the United States.

The details

Berkshire Hathaway continues to actively manage its DaVita position to match the dialysis provider's share buyback pace, ensuring its ownership does not exceed 45%. Meanwhile, a rotation away from tech stocks has severely pressured Alphabet, which recently posted negative free cash flow of $9.1 billion and missed revenue targets for two straight quarters. This market shift has forced institutional investors to re-evaluate exposure to tech-heavy portfolios as valuations recalibrate.

Tuesday: Berkshire sold $69 million in DaVita shares.
Thursday: Alphabet market value fell by $500 billion.
Friday: Weekly trading period closed with Berkshire Class A shares at $815,600.
September 30: A new portfolio snapshot is expected in two weeks.

Market Landscape

This activity follows the pattern of institutional divestment seen during the 2026 tech sector market rotation. It highlights a departure from high-growth tech valuation models toward more defensive capital allocation strategies.

Operators should monitor how their larger peers manage equity stakes in response to sector-wide revenue misses. Reviewing capital allocation against buyback patterns can provide a template for maintaining target ownership thresholds in volatile markets.

The takeaway

Large-scale institutional rebalancing often signals a broader skepticism toward tech-heavy revenue growth models. Operators should prioritize tracking quarterly free cash flow as a primary metric to gauge the health of their own sector’s public competitors.

What happens next

Investors and operators should track the updated portfolio holdings disclosure due on September 30, which will provide the next official snapshot of Berkshire Hathaway’s asset allocation.