The markets closed mixed with the Dow falling 45 points to 20,550 over uncertainty about the effectiveness of the Trump administration. Nasdaq gained 11 points to 5,840.
On the upside
Shares of Cancer Genetics (Nasdaq: CGIX) climbed for the fourth day.
Bargain hunters lifted shares of Superconductor Technologies (Nasdaq: SCON).
Ziopharm Oncology (Nasdaq: ZIOP) received positive guidance from the Food and Drug Administration at its End-of-Phase 2 meeting for Ad-RTS-hIL-12 gene therapy candidate.
On the downside
Retreating crude oil prices weighed down shares of oilfield services providers Keane Group (NYSE: FRAC) and ProPetro Holding (NYSE: PUMP).
Investors locked in profits on Sierra Wireless (Nasdaq: SWIR).
Shares of Westport Fuel Systems (Nasdaq: WPRT) fell ahead of its earnings release after market close.
In the broad market, advancing issues were on par with decliners on the NYSE while advancers edged out decliners by a margin of 5 to 4 on Nasdaq. The broader S&P 500 index slipped 2 points to 2,341. Bitcoin soared $72 to $1029.