Earnings Preview: Comcast Corporation (CMCSA), CBS Corporation (CBS), Metlife Inc (MET), Phillips 66 (PSX), Exelon Corporation (EXC)

So far, a little more than half of the S&P 500 companies have reported their second-quarter earnings results. Excluding the banks, which had an unusually strong quarter, profits are seen contracting by 0.6 percent, according to Thomson Reuters. Even including banks, profit growth is only expected to rise by 3.8 percent – well below the average growth rate of 9.8 percent seen in the past five years.

We ran a screen and produced a list of 9 notable companies set to report their earnings on July 31. We've highlighted their expected reporting dates and times, along with analysts' earnings-per-share (fully reported) and revenue estimates from Reuters, as well as the stocks' year-to-date performances.

Wednesday Before Markets Open, or BMO:

American Tower Corp (NYSE:AM) is a wireless and broadcast communications infrastructure company that owns, operates and develops communications sites. The company has a market cap of $28.64 billion. It's expected to report FY 2013 second-quarter EPS of 52 cents on revenue of $814.74 million, compared with a profit of 12 cents per share on revenue of $697.73 million in the year-ago period. American Tower is trading at around $72.42 per share. So far this year, the stock has gained 20.7 percent.

Comcast Corporation (Nasdaq:CMCSA) is a provider of entertainment, information and communications products and services. The company has a market cap of $114.29 billion. It's expected to report FY 2013 second-quarter EPS of 63 cents on revenue of $16.01 billion, compared with a profit of 50 cents per share on revenue of $15.21 billion in the year-ago period. Comcast is trading at around $43.40 per share. So far this year, the stock has gained 16.2 percent.

Exelon Corporation (NYSE:EXC) is an energy provider and holding company for several energy businesses. The company has a market cap of $27.12 billion. It's expected to report FY 2013 second-quarter EPS of 53 cents on revenue of $6.15 billion, compared with a profit of 33 cents per share on revenue of $6.37 billion in the year-ago period. Exelon is trading at around $31.69 per share. So far this year, the stock has gained 6.6 percent.

Phillips 66 (NYSE:PSX) is engaged in producing natural gas liquids and petrochemicals. The company has a market cap of $36.51 billion. It's expected to report FY 2013 second-quarter EPS of $1.81 on revenue of $41.57 billion, compared with a profit of $1.86 per share on revenue of $46.75 billion in the year-ago period. Phillips 66 is trading at around $59.09 per share. So far this year, the stock has gained 11.58 percent.

The Southern Company (NYSE:S) is an electric utilities holding company based in the southern U.S. The company has a market cap of $39.63 billion. It's expected to report FY 2013 second-quarter EPS of 69 cents on revenue of $4.30 billion, compared with a profit of 71 cents per share on revenue of $4.18 billion in the year-ago period. Southern is trading at around $45.52 per share. So far this year, the stock has gained 6.4 percent.

PG&E Corporation (NYSE:PCG) is the investor-owned utility that provides natural gas and electricity to most of the northern two-thirds of California, from Bakersfield almost to the Oregon border. The company has a market cap of $20.52 billion. It's expected to report FY 2013 second-quarter EPS of 66 cents on revenue of $3.90 billion, compared with a profit of 55 cents per share on revenue of $3.59 billion in the year-ago period. PG&E is trading at around $46.41 per share. So far this year, the stock has gained 15.7 percent.

Wednesday After Markets Close, or AMC:

CBS Corporation (NYSE:CBS) is a mass media company. The company has a market cap of $32.18 billion. It's expected to report FY 2013 second-quarter EPS of 73 cents on revenue of $3.51 billion, compared with a profit of 65 cents per share on revenue of $3.48 billion in the year-ago period. CBS is trading at around $52.39 per share. So far this year, the stock has gained 38.1 percent.

MetLife Inc (NYSE:MET) is a provider of insurance, annuities and employee benefit programs. The company has a market cap of $32.18 billion. It's expected to report FY 2013 second-quarter EPS of 96 cents on revenue of $17.33 billion, compared with a profit of $2.12 per share on revenue of $16.79 billion in the year-ago period. MetLife is trading at around $48.69 per share. So far this year, the stock has gained 48.5 percent.

Williams Companies, Inc. (NYSE:WMB) is an energy infrastructure company focused on connecting North America’s hydrocarbon resource plays to markets for natural gas, natural gas liquids and olefins. The company has a market cap of $23.20 billion. It's expected to report FY 2013 second-quarter EPS of 14 cents on revenue of $1.85 billion, compared with a profit of 21 cents per share on revenue of $1.85 billion in the year-ago period. Williams Cos. is trading at around $33.98 per share. So far this year, the stock has gained 3.8 percent.