West Los Angeles private investment firm Shamrock Capital announced July 3 that it sold its share of theater advertising company Screenvision Media.

Abry Partners, a Boston-based investment firm, bought New York City-headquartered Screenvision for a reported $380 million.

It has not been disclosed how much of that $380 million goes to Shamrock, which owned a stake in Screenvision along with AMC Entertainment Holdings. Both Shamrock and AMC Entertainment will retain a minority stake in Screenvision.

Screenvision contracts with 2,400 movie theaters across the country to provide advertising.

Shamrock, a 40-year-old company founded by Roy E. Disney, has laid claim to $1.9 billion in assets under management.

Media and entertainment reporter Matthew Blake can be reached at (323)556-8332 or [email protected]