Buffett’s Berkshire Hathaway reveals 11.4% stake in HP (NYSE:HPQ)

HP Inc. (NYSE:HPQ) +9.5% post-market after Warren Buffett’s Berkshire Hathaway (NYSE:BRK.A) (NYSE:BRK.B) disclosed Wednesday that it had purchased nearly 121M shares worth ~$4.2B based on the latest $34.91 closing price, for an 11.4% stake.

Berkshire’s HP holdings were disclosed in two SEC filings: A Form 3 filing as of April 1 showed Berkshire owned 109.8M HP shares, or ~10% of the company, and a Form 4 filing showed Berkshire held just under 121M HP shares after buying ~11M shares during the past three days at prices in the $35-$37 range.

The HP stake is Buffett’s third major investment in recent weeks, after a deal to buy insurer Alleghany for $11.6B and amassing a 14.6% stake in Occidental Petroleum worth $7.6B.