Southwest Airlines on Wednesday partly blamed flight cancellations caused by the grounding of the Boeing 737 MAX 8 fleet for what it said would be $150 million in lost revenue in the first quarter. But the stock was still rising in morning trading.

The back story. The U.S. joined regulators around the world earlier in March when it grounded Boeing 737 MAX 8 planes following the model’s second deadly crash in recent months. And last week, the FBI joined a probe into the FAA’s certification of the 737 MAX. While investigations into the recent crashes are ongoing, it’s possible that a software malfunction caused the planes to nosedive. Boeing plans to roll out new software to address the issue.

Read more: https://www.barrons.com/articles/southwest-airlines-boeing-737-max-costs-51553696728