Robert F.X. Sillerman, an investor and media executive who built and sold radio empires, controlled the Elvis Presley estate and consolidated the American concert industry, died on Sunday. He was 71 .

His brother, Michael, confirmed his death but gave no other details. Mr. Sillerman had recently been living in Hinsdale, N.H.

For decades, Mr. Sillerman was a regular in the headlines of the financial press, buying and selling numerous media and entertainment businesses, often at a huge profit, and presenting a brash public persona that sometimes rivaled those of the celebrities he dealt with.

When Mr. Sillerman tried to corner the fractious world of dance music festivals in the early 2010s, for example, he played the part of a devil-may-care rebel to a sometimes puzzling extent. He posed for publicity photos in clothes emblazoned with profanities, and after a video of Mr. Sillerman making an obscene gesture circulated on social media, a Wall Street analyst was prompted to question his sanity. Mr. Sillerman called it an inside joke.