People flock to the movies during the summer blockbuster frenzy to flee the stresses of their everyday lives, but in actuality, many mutual fund investors have some portion of their finances staked on the success of the films they are using as an escape.

In most scenarios, investors' retirement and savings will not teeter on the draw of the likes of Warner Bros. Picture's "Terminator III: Rise of the Machines," or Metro Goldwyn Mayer's "Legally Blond 2: Red, White & Blonde." However, many of the world's largest movie studios are subsidiaries of much larger, more diversified corporations that have a prominent place in many portfolios. The summer film push represents 40% of the year's box office, making it a significant time for the industry, according to Exhibitor Relations Co., an Encino, Calif.-based box office tracker.

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