PTC, AAR Identified as Profitable Top Picks; Diebold Nixdorf Underwhelms, StockStory Says

On May 29, 2026, research firm StockStory released an analysis singling out PTC Inc. (NASDAQ:PTC) and AAR Corp. (NYSE:AIR) as profitable companies with sustainable growth, while saying Diebold Nixdorf Inc. (NYSE:DBD) may face headwinds. PTC, which provides design and product lifecycle software, reported a trailing 12-month GAAP operating margin of 38.7%. Its shares traded at $140.49, implying a forward price-to-sales ratio of 6.3. Aircraft maintenance provider AAR posted an operating margin of 8.7% and a stock price of $114.93, equating to a forward P/E of 21.2. By contrast, Diebold Nixdorf, a supplier of self-service banking and retail technology, generated a thinner 6.4% operating margin. At $81.11 per share, the stock’s forward P/E stood at 13.1. The report cited potential reliance on outdated business models.