Morgan Stanley

(MS) - Get Report

hired a new executive to oversee its prime brokerage division, which serves hedge fund clients.

Alex Ehrlich, who ran prime brokerage for

UBS

(UBS) - Get Report

, took over the unit that had been run by Stuart Hendel, who is leaving Morgan Stanley, according to a

Bloomberg

report that cited an internal company memo. A Morgan Stanley spokesman did not immediately respond to an email message.

While less profitable than it was before the crisis, prime brokerage remains critical to investment banking franchises of banks like

Goldman Sachs

(GS) - Get Report

JPMorgan Chase

(JPM) - Get Report

,

Credit Suisse

(CS) - Get Report

and

Deutsche Bank

(DB) - Get Report

.

Morgan Stanley and Goldman used to dominate the

prime brokerage

business, but have lost ground to rivals over the past year.