Nearest Resistance: $7.50 Nearest Support: $6.60 Catalyst: Supreme Court Healthcare Ruling Hospital operator Health Management Associates ( HMA) is another name that's getting upward momentum from the Supreme Court ruling on Obamacare. Shares of the firm are up more than 7% in today's session, driving the stock to a new six-month high. Making new highs is significant from an investor psychology standpoint because it means that everyone who has bought shares in the last year is sitting on gains. As a result, the "back to even" mentality is less of a concern than it would be for a name with a higher proportion of shareholders sitting on losses. For late-to-the-game buyers though, I'd recommend waiting until HMA pushes above today's high water mark before diving in. To see these stocks in action, check out the at Most-Active Stocks portfolio on Stockpickr. -- Written by Jonas Elmerraji in Baltimore.