Benzinga's Top Downgrades By: Benzinga via Benzinga April 20, 2015 at 10:50 AM EDT Analysts at Needham downgraded Proto Labs Inc (NYSE: PRLB) from Buy to Hold. Proto Labs shares closed at $76.66 on Friday. ... Read More >> Related Stocks: Costamare Inc Halliburton Co Jakks Pacific Inc Laredo Petroleum Holdings Inc Lululemon Athletica Proto Labs Inc United Nat Foods Wesco International