ST. PETERSBURG, FL -- Jabil today reported preliminary, unaudited fourth quarter net revenue of $5.78 billion, up 15% from a year ago.

For the period ended Aug. 31, operating income was up 30% to $154 million. The company swung to a net loss of $57 million, down from net income of $46 million a year ago.

For the year, Jabil reported revenue of $22.1 billion, up 15.7% from the previous year. GAAP operating income was $542.2 million. Diversified manufacturing services (DMS) showed year-on-year revenue growth of 23%, while electronics manufacturing services (EMS) was up 11%.

“I’m really pleased with our fiscal 2018 results and the positive momentum we’re seeing across the business,” said CEO Mark Mondello. “Our team’s performance during the year culminated in double-digit revenue growth, 24% core EPS expansion and core ROIC of 19% , an increase of approximately 400 basis points year-on-year. At the same time, we made strategically important investments in areas like additive manufacturing and factory automation, while the underlying business allowed for nearly $1 billion in cash flow generation and $500 million in shareholder returns."

Jabil guided for fiscal first quarter sales of $5.8 billion to $6.4 billion, up 9% from a year ago, and GAAP operating income of $158 million to $223 million. It expects the DMS unit revenue to grow 5% year-on-year and EMS revenue to climb 13% year-on-year.