Warren Buffett's Berkshire Hathaway took a bite of Domino's Pizza and waded into the swimming pool business even as it pared several much larger bets.

Domino’s is the only sizable new equity holding by Berkshire in the period. Domino’s shares are rising in after-market activity in an apparent reaction to the Berkshire news.

Berkshire Hathaway Inc. bought stock in Domino’s Pizza Inc. and Pool Corp. during the third quarter as Chairman Warren Buffett cut back on some long-held investments. Shares of the two new holdings jumped in late New York trading.