Indianapolis Colts owner Jim Irsay is moving up the ranks of the richest Americans a year after making his way onto the Forbes 400 list of the nation’s wealthiest people.

Irsay, 51, ranked 290th on the list with an estimated net worth of about $1.4 billion, according to the list released Wednesday. He made Forbes’ list for the first time last year, ranking 347th with a net worth of $1.1 billion.

Other Hoosiers dropped in the rankings. Cook Group founder Bill Cook of Bloomington landed at No. 101 with $3.1 billion, down from No. 85 last year after losing $400 million of his wealth; White Lodging leader Dean White of Crown Point was No. 221 with $1.8 billion, down from No. 202 despite a $50-million increase in net worth; and Indianapolis-based Simon Property Group co-founder Herb Simon, No. 330 with $1.25 billion, down from No. 317. His wealth was unchanged at $1.25 billion.

This year’s Forbes 400 reflects an "uptick" in wealth among the richest Americans, the magazine said. More than half saw their net worth increase, while just 85 members saw a decline. Forbes said 16 member were new to the list, and 18 returned after an absence.

Microsoft founder Bill Gates topped the list for the 17th straight year with $54 billion, improving on the $50 billion reported in 2009.