The Astros acquired Ferguson from the Yankees on Tuesday in exchange for right-hander Kelly Austin, Jack Curry of YES Network reports.
Ferguson will provide the Astros with additional bullpen depth after appearing in 42 games with the Yankees this season. The 27-year-old logged a 5.13 ERA, a 1.50 WHIP and 10 holds across 33.1 innings for New York. He's not expected to see much high-leverage work in Houston.