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Health care stocks were ending slightly lower today with the NYSE Health Care Sector Index dropping less than 0.1% and shares of health care companies in the S&P 500 retreating 0.1% as a group.

In company news, Tracon Pharmaceuticals ( TCON ) reached a new, all-time high Tuesday after analysts at Oppenheimer, Stifel Nicolaus and Needham & Co. all began coverage today of the oncology and age-related drug treatments company.

Oppenheimer started TCON with an Outperform rating and a $22 price target, with analyst Yigal Mochomovitz citing the company's TRC-105 drug candidate as an "explored and novel" target to block blood vessel growth in cancer.

Stifel began its coverage of TCON with a Buy rating and a $16 price target while Needham also initiated the stock with a Buy rating and a price target of $19 a share.

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Health Care Sector Update for 02/24/2015: TCON,BIOC,CBAY