Major record labels (current)

These three and one mini-major were once part of the big six until 1999.

Sony Music Entertainment (founded September 9, 1929 as American Record Corporation)

Independent, 1929-1938
CBS, 1938-1988 (as Columbia Records, USA until 1966 and as CBS Records from 1966 onwards)
Sony Corporation of America, 1988-2004 (as CBS Records until 1991 and as Sony Music Entertainment from 1991 onwards)
Sony Corporation of America and Bertelsmann, 2004-2008 (as Sony BMG Music Entertainment)
Sony Corporation of America, 2008-2012 (as Sony Music Entertainment)
Sony Entertainment, 2012-2019
Sony Music Group, 2019-present

Universal Music Group (founded September 1934 as the American unit of Decca Records)

Decca Records, 1934-1939
Independent, 1939-1962
MCA Inc., 1962-1990 (as MCA Records from 1971 until 1989 and as MCA Music Entertainment Group from 1989 onwards)
Matsushita Electric, 1990-1995
Seagram, 1995-2000 (as MCA Music Entertainment Group until 1996 and as Universal Music Group from 1996 onwards)
Vivendi, 2000-2004
Vivendi and General Electric, 2004-2011
Vivendi, 2011-2019
Vivendi and Tencent, 2019-2021
Vivendi, Tencent, Bolloré and Pershing Square Holdings, 2021-present

Warner Bros., 1958-1967
Warner Bros.-Seven Arts, 1967-1969
Kinney National Services Inc., 1969-1972 (as Warner Bros.-Seven Arts until 1970 and as Kinney Record Group International from 1970 onwards)
Warner Communications, 1972-1990 (as Warner-Elektra-Atlantic)
Time Warner, 1990-2001 (as Warner-Elektra-Atlantic until 1991 and as Warner Music from 1991 onwards)
AOL Time Warner, 2001-2003 (as Warner Music Group)
Time Warner, 2003-2004
Edgar Bronfman Jr., 2004-2011
Access Industries, 2011-present

BMG Rights Management (founded 1985 as RCA/Ariola International), major until 2004 and mini-major since 2008

Independent, 1900-1901
Victor Talking Machine Company, 1901-1929 (as Victor Talking Machine Company until 1924 and as RCA Victor from 1924 onwards)
Radio Corporation of America, 1929-1985

Radio Corporation of America and Bertelsmann, 1985-1986
General Electric and Bertelsmann, 1986-1987
Bertelsmann, 1987-2004 (as Bertelsmann Music Group)
Sony Corporation of America and Bertelsmann, 2004-2008 (as Sony BMG Music Entertainment)
Bertelsmann, 2008-2009 (as BMG Rights Management)
Bertelsmann and KKR, 2009-2013
Bertelsmann, 2013-present

Independent, 1973-1999 (as Concord Jazz until 1994 and as Concord Records from 1994 onwards)
Hal Gaba and Norman Lear, 1999-2004
Concord Music Group, 2004-2008
Concord Music Group and Village Roadshow Pictures, 2008-2010
Concord Music Group, Village Roadshow Pictures and State of Michigan Retirement System, 2010-2013
Concord Music Group and State of Michigan Retirement System, 2013-2015
Concord Music and State of Michigan Retirement System, 2015-2019 (as Concord Bicycle Music until 2017 and as Concord Music from 2017 onwards)
State of Michigan Retirement System, 2019-present (as Concord)

Allied Artists Music Group (founded 1959 as Allied Artists Pictures Records), mini-major

Allied Artists Pictures Corporation, 1959-1979 (as Allied Artists Pictures Records until 1965, as Allied Artists Music from 1965 until 1971 and Allied Artists Records from 1971 onwards)
Allied Artists International, 1979-present (as Allied Artists Records until 1999 and as Allied Artists Music Group from 1999 onwards)

Mateus Honrado's Blog