A New Jersey family court judge has blocked Laura Overdeck from taking the stand or calling expert witnesses in her multibillion-dollar divorce from Two Sigma co-founder John Overdeck, ruling that she hacked his computer, broke into his private mailbox, and destroyed evidence under court order.
John Overdeck, the 56-year-old financier behind the Manhattan-based, $80 billion hedge fund Two Sigma, testified Tuesday in a Newark courtroom while his estranged wife sat silenced by her own conduct. State Family Court Judge Bruce Buechler found that Laura Overdeck committed repeated discovery abuses so severe that he dismissed her divorce complaint entirely, a penalty he called the "ultimate sanction."
The case, described as the state's most expensive contested split, centers on Laura Overdeck's claim to 35 percent of her husband's stake in Two Sigma, a sum valued at roughly $6.2 billion. John Overdeck has offered $633 million, according to her lawyers. The gap between those two numbers is staggering. But before the court can reach the money, it had to deal with what the judge found Laura Overdeck did to gain an edge.
Judge Buechler's ruling, based on findings from an earlier hearing in April, laid out a pattern of misconduct. Laura Overdeck accessed her husband's private computer and used her cell phone to photograph emails between John Overdeck and his attorneys, communications protected by attorney-client privilege. When the court ordered her to turn over the phone, she refused.
She did not comply for at least 13 months. When the device finally arrived, the images had been deleted. Her explanation: the phone was running out of memory.
That was not the only violation. The judge also found that Laura Overdeck convinced the U.S. Post Office to give her an extra key to her estranged husband's private P.O. box so she could access his mail. She then refused to say what she took from the box, or to return it.
Judge Buechler was blunt about the cumulative weight of her actions:
"Whether Ms. Overdeck did it maliciously or accidentally is not relevant. There's a cumulative effect here."
The ruling stripped Laura Overdeck of the right to testify, to call expert witnesses, or to present affirmative evidence in her own case. Her only remaining avenue, the judge noted, is cross-examining her husband on the stand. That is a narrow path in a proceeding where billions are at stake.
On the stand Tuesday, John Overdeck laid out a case that Two Sigma was his before the couple married in 2002, and that Laura Overdeck understood that from the start. His lawyers have argued the firm was founded roughly two years before the wedding, around 2000.
Overdeck testified that his wife acknowledged his ownership early on:
"I remember that she, even before we were married, acknowledged that I owned a company, and that she wasn't the type of person who would claim that that would be hers."
He walked the court through a series of financial milestones. In June 2004, the couple bought their first house, and he chose to title it jointly, a decision he described as "taking something that had been mine and making it ours." By 2007, they had established trusts for their three children and hired an accountant who prepared separate balance sheets with distinct columns for "John's assets."
High-profile divorce battles involving enormous fortunes have become a recurring feature of modern wealth. A South Korean AI billionaire was recently ordered to pay $645 million after a decade-long fight, and even that figure would be a fraction of what Laura Overdeck is seeking.
The financial stakes dwarf almost any American divorce on record. Laura Overdeck's claim of 35 percent of her husband's Two Sigma stake amounts to approximately $6.2 billion. John Overdeck's counteroffer of $633 million, while enormous by any ordinary standard, represents roughly a tenth of what she wants.
Judge Buechler made clear that despite the sanctions against Laura Overdeck, the couple's assets must still be divided. "The assets need to be equitably distributed," he said. Equitable distribution is a legal standard in New Jersey that does not necessarily mean a 50-50 split, it means what the court deems fair based on the circumstances of the marriage.
The question now is how much Laura Overdeck's misconduct will shape that outcome. With her complaint dismissed and her ability to present her own case gutted, the judge's findings about hacking, mail theft, and evidence destruction will hang over every remaining proceeding.
Divorce cases that expose hidden conduct by a spouse have a way of reshaping public perception. In one recent example, an Arkansas state trooper was forced out after his estranged wife filed damaging texts as part of their split. The Overdeck case involves a different kind of exposure, but the principle is the same: what comes out in discovery can be more consequential than the divorce itself.
The two Overdecks arrived at the Newark courthouse Tuesday projecting very different images. John Overdeck wore a blue suit and an open-necked white shirt with no tie. He grinned for a Post photographer and carried his phone, which displayed a playful game on the screen.
Laura Overdeck, the 56-year-old mother of three, appeared in dark-blue jeans, a light-blue blazer, a white top, and sandals. She looked much more subdued and solemn as she entered the building, a woman whose legal options had been sharply curtailed by her own choices.
The settlement figures in cases like these can take unexpected turns. After country singer Jelly Roll's divorce, his ex-wife treated herself to a custom Rolls-Royce with the proceeds. Laura Overdeck may not have that luxury. Whatever she ultimately receives, it will arrive under the shadow of a judge's finding that she broke the rules to get more.
Courts exist to settle disputes fairly. When one side hacks computers, steals mail, and destroys evidence, the court has every right to take the tools of litigation away. Judge Buechler did exactly that, and the result is a reminder that no fortune is large enough to put you above the rules of the courtroom.