Don't punt on your CBS (CBS - Get Report) shares just because professional football ratings are down this season. The media giant's digital initiatives and steady diet of share buybacks will help the stock over the long-term, said Erin Gibbs, portfolio manager at S&P Investment Advisory Services. Gibbs is also bullish on Constellation Brands (STZ - Get Report) , up 17% year-to-date, saying its recent acquisitions are supporting growth in both the beer and wine segments. The stock is trading at 23 times its forward earnings, higher than the sector's average of 20, but Constellation has significantly higher growth. Monsanto (MON) , up 3% year-to-date, is another one of Gibbs' top picks. Bayer AG (BAYRY) offered $128 per share to acquire Monsanto last month. There are many regulatory hurdles and it is expected that the companies will have to shed some businesses for approval. But it is expected to be approved and contribute to higher margins. Finally, Gibbs is a fan of healthcare provider Aetna (AET) , up 3% year-to-date. The stock has taken a beating now that it looks unlikely that the Humana (HUM - Get Report) deal will be approved. And Aetna would owe Humana a $1 billion breakup fee due to an antitrust termination. Plus, every time healthcare is brought up in the election, healthcare stocks take another beating.