Airbnb Inc ABNB shares tanked in early trading on Wednesday, after the company reported downbeat second-quarter earnings.The results came amid an exciting earnings season. Here are some key analyst takeaways. Check out other analyst stock ratings.JPMorgan: Airbnb's second-quarter results came broadly in-line with expectations, Anmuth said in a note. He added, however, that growth investments began weighing on margins and the company's adjusted EBITDA margins contracted by around 50 basis points (bps) year-o ...