Notable 52-Week Highs and Lows of the Day 03/29: (UNH) (THLD) (RHT) High; (ANR) (NBS) (CTRP) Low

This report is an intraday check of some of the more notable stocks that have hit a 52-week high or low so far today.

52-Week High:

• UnitedHealth Group (NYSE: UNH) high of $58.15. UnitedHealth moving higher along with other insurers on the hopes that Obama's healthcare law will pass scrutiny with the Supreme Court. The healthcare has been the strongest performer on the week with deliberations ongoing. Today is day four, and the ongoing theme is that the law would be unconstitutional.
  
  
  UnitedHealth moved 4.9 percent higher to the new mark Thursday.
  
  
• Red Hat, Inc. (NYSE: RHT) high of $61.37. Red Hat moving strongly higher following its fourth-quarter earnings report, issued after the market closed Wednesday. Revs came in at $297 million with non-GAAP EPS of 29 cents. The Street was expecting revs of $291 million and EPS of 27 cents.
  
  
• Threshold Pharmaceuticals (Nasdaq: THLD) high of $8.77. Threshold moving about 10.2 percent Thursday ahead of scheduled presentations for TH-302 at the upcoming AACR meeting. The pharma also got some bullish comments from Lazard Capital earlier.
  
  
• Aetna Inc. (NYSE: AET) high of $49.45. See UnitedHealth above. Aetna up over 6 percent on Thursday's session to the new mark.

52-Week Low:

• Alpha Natural Resources (NYSE: ANR) low of $14.54. Coal miners continue lower on bleak prospects following new U.S. regulation. On Tuesday, the EPA passed regulation limiting the CO2 emissions allowed by power plants in the U.S. Reuters noted that the rules "would set a standard well within the capability of modern gas-fired plants but impossible for coal-fired units to meet unless they employ (unproven) carbon capture and storage (CCS) technology." Alpha down 2.2 percent on the session.
  
  
• Neostem (AMEX: NBS) low of $0.387. Though small in share price, Netstem still boasts a market cap of about $45 million. The company priced a 15 million unit offering at 40 cents per unit.
  
  
• Ctrip.com (Nasdaq: CTRP) low of $21.01. Ctrip lower on economic data Thursday as well as lower sentiment that China's growth will continue to rip through 2012. Tuesday, Macquarie started coverage on Ctrip with a Neutral rating and $23 price target. The target was pennies below where it started Tuesday's session, indicating lack of confidence from the firm.
  
  Ctrip moved as much as 4.5 percent lower Thursday on the market weakness.

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