NEW YORK ( TheStreet) -- On Friday, U.S. Environmental Protection Agency Administrator Gina McCarthy announced new coal-burning electric plants will have limits on the amount of carbon dioxide they emit into the air. The announcement wasn't unexpected after President Obama announced plans to limit greenhouse gases.However, the results on your portfolio and electric bill may be. What happens when you mix a Boston Clean Air Task Force, EPA, Department of Energy, Sierra Club, Mississippi Public Service Commission, White House limits on greenhouse-gas emissions and a new carbon capturing electric power plant by Southern Co ( KBR)? ANR), Walter Energy ( WLT), Arch Coal ( ACI), Cliffs Natural Resources ( CLF), Peabody Energy ( BTU), and James River Coal ( JRCC) are companies that may benefit from increased demand for coal. Not all coal or coal companies are equal, so it's crucial to discriminate based on your investment time-horizon goals. With that said, the announcement should have been followed by a deep sell-off in coal and utility related stocks. But something happened. Or, rather, didn't happen. The above coal stocks didn't sell off tremendously and are largely moving along with the rest of the market today. This is noteworthy because stocks don't bottom on good news, they reach a bottom on awful news. Let me explain: When a stock chart continues trending lower, what you're witnessing is investors throwing in the towel and moving on.