The health care sector closed the day up 1.1%. Cormedix Inc ( CRMD), Senesco Technologies Inc ( SNT), POZEN Inc ( POZN), and Complete Genomics Inc ( GNOM) were all decliners today within the health care sector with Regeneron Pharmaceuticals Inc ( REGN) being today's featured health care loser. Regeneron Pharmaceuticals Inc fell $1.35 (-2.1%) to $63 on light volume. Throughout the day, 781,985 shares of Regeneron Pharmaceuticals Inc exchanged hands as compared to its average daily volume of 1.4 million shares.

Regeneron Pharmaceuticals, Inc., a biopharmaceutical company, discovers, develops, and commercializes pharmaceutical products for the treatment of serious medical conditions in the United States. Regeneron Pharmaceuticals Inc has a market cap of $6 billion and is part of the drugs industry. Shares are up 96% year to date as of the close of trading on Tuesday.

TheStreet Ratings rates Regeneron as a hold. The company's strengths can be seen in multiple areas, such as its solid stock price performance and largely solid financial position with reasonable debt levels by most measures. However, as a counter to these strengths, we also find weaknesses including feeble growth in the company's earnings per share, deteriorating net income and disappointing return on equity.

On the positive front, Pacific Biosciences of California Inc ( PACB), Gentiva Health Services Inc ( GTIV), Accelr8 Technology Corporation ( AXK), and Uluru Inc ( ULU) were all gainers within the health care sector with Merck & Co Inc ( MRK) being today's featured health care sector winner.

For investors not wanting singular stock exposure, ETFs may be of interest. Investors who are bullish on the health care sector could consider Health Care Select Sector SPDR ( XLV) while those bearish on the health care sector could consider ProShares Ultra Short Health Care ( RXD).