Shares of Snap Inc. opened for trading on the New York Stock Exchange on Thursday at $24 per share, up from the IPO price of $17 per share—and kept climbing, per MarketWatch. As of this writing, prices have risen 48% to over $25 per share. Snap co-founders Evan Spiegel, 26, and Robert Murphy, 28—with $4.5 billion and $3.9 billion in Snap stock at the IPO price, respectively—rang the bell to open the exchange, both wearing smiles, reports Business Insider. (More Snapchat stories.)