$PayPal(PYPL)$Image source: Getty ImagesTo say that PayPal(NASDAQ: PYPL)shares – which I own in my own portfolio – have been a disappointing investment over the last year would be an understatement. This time last year, the FinTech stock was trading near $275. Today, however, the share price is near $100.Recently however, PayPal shares have started to experience a bit of a rebound. It seems that, finally, sentiment towards the stock is improving. Is now the time to buy more PayPal stock for my portfolio then? Let’s take a look.PayPal shares: time to buy?PayPal’s recent Q2 results, posted earlier this month, were pretty solid, to my mind. For the period, net revenue amounted to $6.8bn, up 10% year-on-year on an FX-neutral (FXN) basis.Meanwhile, n