Visitors and cosplayers at a poster at San Diego Comic-Con.
At San Diego Comic-Con that percentage can be as high as 40%, industry experts told CNBC.
Representatives for San Diego Comic-Con did not immediately respond to CNBC's request for comment.
More than HollywoodOf course, San Diego Comic-Con isn't just about celebrity talent hawking their newest, nerdiest content.
Wilder, who is attending his first San Diego Comic-Con this year, is also a panelist at the event for the X-Men Fandom Panel.
Persons:
Con, Goldman Sachs, Shawn Robbins, Quinta Brunson, Abbott, Kenan Thompson, Kel Mitchell, SDCC, Robert Thompson, Con isn't, that's, Justin Wilder, It's, Wilder, Jack Kirby, Ray Bradbury, Jason Chau, Chau, I'm, Ashley Anderson, Robbins, they're, aren't
Organizations:
San Diego Comic, Getty, Hollywood, JPMorgan, Syracuse University, Marvel, CNBC, Hasbro, Legendary Entertainment, New York Comic Con, Rhode
Locations:
Los Angeles, San Diego, Hollywood, Rhode Island, Forest Hills , New York