Two Sigma Co-Founder’s Divorce Threatens to Drag Firm Into Drama

The cryptic note surfaced at the bitter end of a marriage.

It was written by John Overdeck, the billionaire math whiz behind Two Sigma Investments, as he contemplated the future of his fortune.

“Divorce-proof,” it read.

Those words, by Overdeck’s own account, were set down in 2018 in a journal that he kept at his mansion in New Jersey. His thoughts soon turned to spiriting money to Wyoming, halfway across the country.

Then his wife discovered the notebook while searching his home office.

Laura Overdeck told her husband in 2022 that their marriage was over. Nearly four years later, the ...