The Health Care sector (XLV) held steady on a trading day that saw S&P 500 drop 0.3%.

The ETF, as a proxy for the sector, tracked closer to the overall market today than over the past month. As trading began today, XLV was down 2.9% over the last thirty trading days, and the S&P 500 climbed -5.8%.

Insulet Corporation (PODD) declined 3.5% to close at $18, moving below its 50-day moving average of $18.13 and 200-day moving average of $18.45.

MAP Pharmaceuticals (MAPP) rose 6.7% to close at $12.15, approaching its 50-day moving average of $12.57. It has also moved closer to its 200-day moving average of $14.11. ABIOMED (ABMD) fell 5.1% to close at $20.80, moving down to 1.8% above its 200-day moving average of $20.44.

Elan Corporation plc (ELN) was a significant gainer in the sector, rising 8.4%. The stock closed at $14.30 with 8.5 million shares moving. The stock traded in a range of $13.22 to $14.49. Share price is up 45 cents (3.2%) from $13.85 on April 26, 2012. Amylin Pharmaceuticals (AMLN) was another big mover, climbing $2.16 (+8.4%) to a closing price of $27.96.

Telik (TELK) was a major loser in the sector. Its price dropped 6.9% (-39 cents) to close at $5.23, as 103,002 shares moved. The stock traded between $4.97 and $5.62.