PayPal CEO Dan Schulman and employees rung in the opening bell on the Nasdaq while the company gave out food via food trucks in Times Square and posted passersby's photos on Nadsaq's seven-story digital billboard to commemorate the listing.
Refer to the input text as context and select the correct relationship between 'PayPal' and 'Nasdaq' from the available options.
Options: brand, stock exchange, founded by, director/manager