PayPal has offered to buy Pinterest for $45B.
PayPal's offer represents a 26% premium to Pinterest's closing price of $55.58. The news sent Pinterest's stock up 14% to $63.51 and PayPal's shares fell over 4%. PayPal has a market cap of $304B. Link
Update: PayPal says they are not interested in buying Pinterest. This news sent PayPal's stock up 6.1% and Pinterest down 13.2% in premarket trading.