On a trading day that saw the S&P 500 gain 1.6%, the Health Care sector (XLV) showed little change.

The ETF, as a proxy for the sector, tracked closer to the overall market today than over the past week. Going into trading today, the S&P 500 was up -1.1% over the last seven trading days, but XLV was down 2.1%.

Meridian Bioscience (VIVO) was one of the sector's big losers, as its price dropped 9.2% (-$1.70) to close at $16.81. 439,339 shares of the stock moved. The stock traded in a range of $16.31 to $18. Over the last three months, the stock has lost $3.74 (-18.2%) from a price of $20.55 on April 30, 2012.

Regeneron Pharmaceuticals (REGN) was a major gainer in the sector, rising 5.3% (+$6.80) to close at $135.64 with 1.7 million shares moving. The stock traded in a range of $130 to $136.43. Shares have been on on the rise over the past month, climbing $19.55 (16.8%) from a price of $116.09 on June 26, 2012.

Luxottica Group SpA (LUX) rose 4.8% to close at $34.47, crossing its 50-day moving average of $33.51. Meanwhile, PSS World Medical (PSSI) dropped 6% to close at $20.32, moving below its 200-day moving average or $22.62.

Allergan (AGN) rose 2% to close at $85.13, approaching its 50-day moving average of $89.99. It has also moved closer to its 200-day moving average of $90.48. Masimo Corporation (BCR) fell 1.5% to close at $22.39, moving closer to its 50-day moving average of $21.89. Also, the stock moved closer to its 200-day moving average of $97.86.

Chemed Corporation (CHE) hit a new 52-week high today, reaching $66.29 to top the previous high of $66.

Boston Scientific (BSX) hit a new 52-week low today, hitting $4.79 to fall below the previous low of $5.01.