Domino’s Pizza shares jumped nearly 8% in extended trading on Thursday after a filing revealed that Warren Buffett’s Berkshire Hathaway had taken a stake in the world’s largest pizza chain. Monitor these important chart levels.

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.

Warren Buffett's Berkshire Hathaway said on Thursday it made new investments in Domino's Pizza and Pool Corp in the third quarter, even as it retrenched from stocks such as Apple and Bank of America.

Warren Buffett's Berkshire Hathaway took stakes in Domino's Pizza and swimming pool supplier Pool Corp. in the third quarter while continuing to trim stakes in longtime holdings Apple and Bank of America.

Shares of Domino's Pizza Inc. DPZ dropped 0.81% to $435.97 Thursday, on what proved to be an all-around dismal trading session for the stock market, with the S&P 500 Index SPX falling 0.60% to 5,949.17 and Dow Jones Industrial Average DJIA falling 0.47% to 43,750.86.

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.