Take a look at some of Thursday's midday movers:
Tesla – moved higher. Credit Suisse added the stock to its list of "Top Picks," saying the company has a significant, sustainable competitive advantage in the electric car market.
Apple – gained ground after Carl Icahn urged the company to buyback more shares, saying the stock was dramatically undervalued.
Vodafone – falling after the mobile communications company had its rating cut to "reduce" from "neutral" at Nomura, citing increased competition.
HubSpot – soared in its market debut, up as much as 31 percent, after the marketing and sales software company priced 5 million shares at $25. The company trades under the ticker symbol "HUBS."
Yelp – traded higher on an unsubstantiated rumor that Google with interested in buying the company.
Gentiva Health Services – rose after Kindred Healthcare said it would buy the home health, hospice and community care services for $1.8 billion, or $19.50 a share in cash and stock.
J.C. Penney – fell for the second consecutive session after issuing a third-quarter sales warning.
Riverbed Technology – rose after the network equipment maker said it would review its alternatives and start a restructuring program to cut costs.
Allergan – moved lower on an overall down day. It raised its third quarter profit estimate, saying it proved that Valeant's takeover offer undervalued the company.
General Electric – lost ground. CEO Jeff Immelt said the company was on track to generate more than a billion in revenue this year from its data analysis.
Kofax – plummeted after the company posted lower than expected first quarter earnings and lowered its full-year outlook.
Lakeland Industries – rose for the fourth-consecutive day in very heavy trading. The company makes hazmat suits that healthcare workers use to prevent contracting Ebola. The company has a market cap of $95 million.