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NEW YORK, NY - APRIL 27: Actor Robert Downey, Jr. (L) and Jeremy Renner Join Marvel Entertainment Executives Ring The NYSE Opening Bell In Celebration Of "Marvel's Avengers: Age Of Ultron" at New York Stock Exchange on April 27, 2015 in New York City. (Photo by Brad Barket/Getty Images)

NEW YORK, NY - APRIL 27:  Actor Robert Downey, Jr. (L) and Jeremy Renner Join Marvel Entertainment Executives Ring The NYSE Opening Bell In Celebration Of "Marvel's Avengers: Age Of Ultron" at New York Stock Exchange on April 27, 2015 in New York City.  (Photo by Brad Barket/Getty Images)