Airbnb ( ABNB 2.43% ) had its initial public offering late in 2020, and the stock has seen some volatile trading since then. The company's shares now trade roughly 37% below market close on the day of its public debut, and investors may be wondering if it's a good time to build a position in this travel player. Before you make a decision, consider the bull and bear cases presented by these two Motley Fool contributors.