In 1986, GE acquired RCA.[18] RCA's corporate headquarters were located in Rockefeller Center; Welch subsequently took up an office in the now GE Building at 30 Rockefeller Plaza. The RCA acquisition resulted in GE selling off RCA properties to other companies and keeping NBC as part of the GE portfolio of businesses. During the 1990s, Welch shifted GE's business from manufacturing to financial services through numerous acquisitions.