Blue Sky Studios

Blue Sky Studios, Inc. is an American computer animation film studio based in Greenwich, Connecticut that has been owned by 20th Century Fox since 1997. The studio was founded in 1987 by Chris Wedge, Michael Ferraro, Carl Ludwig, Alison Brown, David Brown, and Eugene Troubetzkoy after the company they worked in, MAGI, one of the visual effects studios behind Tron (1982), shut down. Using its in-house rendering software, the studio had worked on visual effects for commercials and films before completely dedicating itself to animated film production in 2002 starting with the release of Ice Age.
https://en.wikipedia.org/wiki/Blue_Sky_Studios