New York Post
· collected 2026-08-27 · by Reuven Fenton, Peter Senzamici, Matt Troutman
Two math nerds, plus a 20-year marriage without a prenup and an $80 billion hedge fund equals the largest divorce in New Jersey’s history — and, potentially, the third-biggest of all time.
asserted
nerds → equal → time
The sensational split between billionaire financier John Overdeck and his estranged wife Laura Overdeck spilled into public view this month as it went to trial in New Jersey family court.
asserted
it → estrange → court
John Overdeck, the 56-year-old founder of Manhattan-based investment firm Two Sigma, has been trying to avoid coughing up $6.2 billion that his soon-to-be ex-spouse contends he owes her in their bitter divorce.
asserted
he → base → divorce
But John Overdeck is fighting his wife’s claim that his stake in the hedge fund counts as a marital asset, testifying Wednesday he couldn’t take the majority of credit for the firm’s success.
uncertain
he → fight → success
“Laura, I think, was alongside me for all of this, and I think it is fair that she received some amount of the appreciation, the net appreciation that occurred during the marriage,” he said.
asserted
he → think → marriage
“On reflection, I think that $600 million approximately is a fair amount of that appreciation for her to receive in final judgment.”
asserted
her → think → judgment
Throughout their marriage, he claimed he was always “prompt” in sharing the fruits of his investment successes with his wife in a joint account, “so much so that she was able to withdraw $75 million the day before she filed for divorce.”
“We lived a comfortable life on that money,” he told the court.
asserted
he → claim → court
The pair’s long path to a nondescript Newark courtroom began more than two decades ago, with a romance that seemed so rock-solid they married with an announcement in the New York Times’ wedding page — and without a prenuptial agreement.
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they → begin → agreement
A preternatural math talent from Maryland, John Overdeck won the silver medal at the International Mathematics Olympiad when he was 16 and graduated from Stanford University at the tender age of 19.
Overdeck soon delved into the hedge fund world, working with a young Jeff Bezos at DE Shaw & Co.
asserted
Overdeck → win → Shaw
He later described himself in court as “Jeff Bezos’ shadow” during the early days of Amazon.com.
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He → describe → Amazon.com
Laura Overdeck, a Princeton University and Wharton School graduate, likewise worked in the hedge fund world — and, after tying the knot, threw herself into philanthropy.
asserted
Overdeck → work → philanthropy
Together, the couple founded the Overdeck Family Foundation focused on education in 2011.
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couple → found → 2011
And Laura Overdeck parlayed her interest into her Bedtime Math nonprofit, producing acclaimed children’s books and apps designed to help spark interest in mathematics.
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Overdeck → parlay → mathematics
In private, the couple raised three children in a 6,000-square-foot Millburn, New Jersey, mansion.
asserted
couple → raise → mansion
But the math whizzes’ marriage didn’t add up, court filings contend.
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filings → add → ?
Laura Overdeck filed for divorce in 2022, and alleged that John Overdeck plotted for years to get out of the marriage as close to scot-free as a billionaire without a prenup could.
uncertain
billionaire → file → prenup
He started laying the groundwork for a divorce just five years into their marriage, allegedly conspiring with the couple’s lawyers to hide assets, court filings in a related lawsuit contend.
uncertain
filings → start → lawsuit
The alleged covert turn toward splitsville coincided with Two Sigma’s growth, with the hedge fund now worth roughly $80 billion.
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fund → allege → growth
The central question in the divorce — and the ongoing trial — is whether Laura Overdeck can claim her husband’s stake in Two Sigma as a marital asset.
uncertain
Overdeck → claim → asset
She contends the firm, founded in 2000, was little more than a paper asset when they wed, while her erstwhile hubby argues it was already well established.
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it → contend → asset
Ultimately, Laura Overdeck is seeking a 35% piece of John’s stake in Two Sigma — which her lawyer pegs at $6.2 billion.
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lawyer → seek → billion
John Overdeck allegedly offered a relative fraction of that eye-watering amount, but it certainly isn’t chump change: $633 million, according to Laura Overdeck’s lawyer Theresa Lyons.
uncertain
it → offer → lawyer
“John Overdeck is trying to put the genie back in the bottle,” Lyons said in court.
asserted
Lyons → try → court
The outcome could also impact the direction of Two Sigma, where John Overdeck had a bitter falling out with fellow co-founder David Siegel.
uncertain
Overdeck → impact → Siegel
The co-founders each own roughly half the firm and have been battling for control since 2023.
asserted
founders → own → 2023
A win by Laura Overdeck not only would net her an all-time divorce payout, but also potentially tip the precarious balance of power at Two Sigma into Siegel’s hands.
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win → net → hands
Beyond the rancorous conflict over cash, the divorce exposed sordid accusations against both John and Laura Overdeck.
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divorce → expose → Overdeck
The hubby’s fencing instructor gal pal sued Laura Overdeck for defamation — accusing her of insinuating that she ruined their marriage and calling her a criminal who ‘threatens people with real knives,” court papers reveal.
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papers → sue → knives
The accusations dovetail with bizarre 2023 police body-camera footage depicting a woman ranting to cops at the Overdecks’ mansion that John was “just using me.”
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John → dovetail → me
John Overdeck admitted to cops he was “dating” the woman, but claimed they never had sex or even got naked in each other’s company, the footage revealed.
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footage → admit → company
As the uncomfortable scene progresses, Laura Overdeck drove up and told cops she wanted both John and the gal pal gone.
asserted
John → progress → cops
He’s got a psycho girlfriend, and he’s got to get out.
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he → get → girlfriend
It’s not that complicated.
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It → ’ → ?
Like, I just want her to leave my kids alone,’’ the wife said.
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wife → want → kids
But Laura Overdeck also didn’t escape being sullied amid the divorce.
asserted
Overdeck → escape → divorce
Accusations that she hacked John Overdeck’s computer, broke into his post office box and deleted evidence from her phone led a judge to bar her from taking the stand in the trial.
asserted
she → hack → trial
That means the trial will hinge on Overdeck’s ongoing testimony, which is set to resume next week.
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which → mean → testimony
He argued that his wife’s exposure to Two Sigma mostly involved attending holiday parties and when he handed out copies of her math-focused kids’ book series in the office.
asserted
he → argue → office
She didn’t manage money, make trades, investment decisions or hires for the firm, he testified Tuesday.
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he → manage → firm
“No, she did not,” he repeatedly responded to questions about Laura Overdeck’s involvement.
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he → do → involvement
…and 9 more, not listed.
