Warren Buffett’s BofA stake is shrinking so much, it’s near a key threshold for regulators

Warren Buffett with Bank of America CEO Brian Moynihan
Warren Buffett with Bank of America CEO Brian Moynihan at Georgetown University in 2013.
Drew Angerer—Getty Images

Warren Buffett’s Berkshire Hathaway Inc. won’t have to swiftly disclose its rapid-fire sales of Bank of America Corp. stock too much longer. That is, if he keeps whittling the investment.

A fresh round of disposals disclosed late Friday trimmed the conglomerate’s stake in the bank down to 11.4%. So long as Berkshire holds more than 10%, US rules require it to reveal transactions within a few days. But if the company holds less, it may wait weeks to update the public — typically giving snapshots after every quarter.

That would help quiet the drama weighing on BofA’s share price since mid-July, when Buffett — a longtime backer of Chief Executive Officer Brian Moynihan — embarked on a selling spree without giving a reason. Berkshire has since reaped a total of $6.2 billion.

In the disposals announced Friday, Berkshire sold about 21 million shares for $848 million from Aug. 28 through 30.

Buffett, 94, began building the investment in Bank of America with a $5 billion deal in 2011 for preferred stock and warrants. His Berkshire Hathaway eventually became — and remains — the bank’s biggest stockholder, with a stake worth about $36 billion, based on Friday’s closing price.

Fortune Brainstorm AI returns to San Francisco Dec. 8–9 to convene the smartest people we know—technologists, entrepreneurs, Fortune Global 500 executives, investors, policymakers, and the brilliant minds in between—to explore and interrogate the most pressing questions about AI at another pivotal moment. Register here.