Etsy Inc (NASDAQ: ETSY) just named Marc Steinberg – partner at Elliott Investment Management – to its board. Shares of the eCommerce giant are up 11% at writing.Who is Marc Steinberg?Copy link to sectionSteinberg is responsible for equity investments across several industries, including tech, media, and telecom at the investment management firm. He serves as a director at Pinterest as well.  Josh Silverman – the chief executive of Etsy said in a press release today:We’ve gotten to know Marc and appreciate h ...