1966: Richard Schulze and a business partner found an electronics store called Sound of Music.
1969: Sound of Music trades as a publicly held company, has three stores.
1978: Sound of Music operates nine stores in Minnesota.
1981: A tornado hits Roseville; company responds with "Tornado Sale" which launches its low-price, no-frills retail environment.
1983: Company name changes to Best Buy Co. Inc. and it opens first superstore.
1985: Best Buy has an initial public offering on Nasdaq, raises $8 million.
1989: Best Buy launches non-commissioned warehouse-style retail strategy, introduces Best Buy yellow tag logo.
1993: Becomes nation's second-largest consumer electronics retailer.
1993: Competitor Highland Superstores Inc. is forced to liquidate.
1995: Best Buy debuts in Fortune magazine's annual ranking of 500 largest companies at No. 373.
2001: Best Buy acquires Musicland for $685 million.
2001: Best Buy goes international, acquires Canada-based Future Shop.
2002: Brad Anderson succeeds founder Richard Schulze as CEO.
2002: Best Buy acquires computer service company Geek Squad.
2003: Moves into new $160 million, 1.5 million-square-foot corporate campus in Richfield.
2003: Sells its interest in Musicland.
2004: Forbes magazine names Best Buy "Company of the Year."
2006: Best Buy acquires majority interest in Jiangsu Five Star Appliance stores in China.
2008: Acquires online music service Napster in October for $121 million.
2009: Competitor Circuit City liquidates.
2009: Brian Dunn named CEO in June.
2011: Best Buy sells Napster in November.
2012: Best Buy announces plans to close 50 superstores and lay off hundreds.
2012: S&P puts Best Buy's corporate credit rating on watch, in line for possible downgrade to "junk" status.
2012: April 10: Dunn resigns; director G. "Mike" Mikan named interim CEO.
2012: May 14: Schulze steps down as Best Buy chairman, continues to hold nearly 21 percent of shares. Board member Hatim Tyabji takes over as chairman.