International Business Machines Corp. reported a slight increase in quarterly revenue, ending a streak of falling sales and providing a first indication Chief Executive Ginni Rometty’s roughly $33 billion acquisition of open-source software giant Red Hat may help turn around Big Blue’s fortunes.

The company on Tuesday said fourth-quarter revenue rose 0.1% to $21.78 billion in the quarter after five straight quarters of year-over-year declines.

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