John and Laura Overdeck's divorce is exposing the staggering wealth of hedge-fund titans. John Overdeck, co-founder of Two Sigma, testified he deposited hundreds of millions into joint accounts, including $75 million the day before Laura filed for divorce. The trial could yield one of the largest divorce settlements ever and disrupt power struggles at Two Sigma, where John Overdeck faces a bitter feud with co-founder David Siegel.

John offers $723 million to settle; Laura seeks $2.17 billion, claiming 35% of Two Sigma's estimated $6.2 billion value. The case reveals Wall Street's wealth generation and protection strategies. The Overdecks shared a 6,000-square-foot home in Short Hills, N.

J., a $900 million charitable foundation, and family trust funds. Laura was barred from testifying after court found she accessed confidential emails. The trial follows other high-profile ultrawealthy divorces, including John Paulson's $1 billion case and Ken Griffin's $22.5 million settlement.

John, an International Math Olympiad medalist and Stanford graduate, founded Two Sigma in 2001 with Laura, whom he met at D. E. Shaw & Co. in the 1990s.

They married in 2002 and have three children.