Berkshire's Lennar stake, Arena-Simplify deal, Sea Limited earnings: Top Stocks

Homebuilder stocks D.R. Horton (DHI) and Lennar (LEN) are seeing a boost after Warren Buffett's Berkshire Hathaway (BRK-A, BRK-B) new stakes in the companies. Arena Group Holdings (AREN) signs a letter of intent with Simplify Inventions. Lastly, Sea Limited (SE) shares sink after an earnings miss despite signaling growth prospects. Yahoo Finance's Julie Hyman and Brad Smith take a look at several trending stocks in the morning trading session.