U.S. stocks ended in negative territory again on Thursday as talks surrounding Greece fizzled. The broad-market averages fell 0.2% to 0.4%.
Energy names led the way lower, while health-care and telecom stocks rallied.
Methode Electronics (MEI) was the session's big loser, falling 27% on a weaker earnings outlook. On the other hand, health-care company Glaukos (GKOS) leaped 73% in its first trading day following an initial public offering.
Elsewhere, Community Health Systems (CYH) led several hospital operators higher on Thursday, gaining about 13% after the U.S. Supreme Court upheld the so-called Obamacare law. Tenet Healthcare (THC) also moved 12% higher, while HCA Holdings (HCA) gained nearly 9%.
In after-hours action, Micron Technology (MU) is down more than 4% on a lower sales outlook. Conversely, Nike (NKE) is up more than 2% in reaction to its latest quarterly results.
Elsewhere, Zoetis (ZTS) is up 2% on heavy volume in after-hours trading, adding to gains seen in the final minutes of the regular session following a report of takeover interest by Valeant (VRX).
Looking ahead to Friday morning, Finish Line (FINL) headlines a quiet earnings calendar.