Is Triumph stock a buy? Triumph Group is one of the longest-running turnaround stories in the aerospace sector. The company's shares have lost about 80% of their value over the last decade and have remained mired near those lows since before the pandemic, hampered by unprofitable contracts and supply issues. The company in recent years has taken steps to turn things around, shedding lower-margin or unprofitable businesses and focusing on a smaller number of core competencies. The work paid off in the most r ...