Rival Wix.com Ltd WIX.O had a market capitalisation of $12.8 billion as of Tuesday, while GoDaddy Inc GDDY.N was worth $13.7 billion, as of last close. Adds comparison with peers, May 18 (Reuters) - Squarespace Inc's SQSP.N valuation dropped by nearly a third in its debut on the New York Stock Exchange on Wednesday, after its shares opened 4% below their reference price amid a broader market sell-off. Shares of the website building and hosting company opened at $48 each on a day Wall Street's main indexes were down on inflation jitters.