One of the most expensive divorce battles New Jersey has ever seen has taken a dramatic turn. Laura Overdeck, who is seeking a multibillion-dollar share of the fortune connected to hedge fund giant Two Sigma, has been barred from testifying and presenting her own affirmative evidence after a New Jersey judge found that she committed multiple discovery violations.
NEWARK, NJ — Billions of dollars are at stake. There was no prenuptial agreement. And now one of the two people at the center of the case may not even be allowed to tell her own story from the witness stand.
The bitter divorce between billionaire hedge fund co-founder John Overdeck and his estranged wife, Laura Overdeck, has already been described by her attorney as New Jersey’s largest contested divorce.
Now the case has become even more extraordinary.
New Jersey Family Court Judge Bruce Buechler ruled that Laura Overdeck committed multiple discovery abuses serious enough to justify what the court described as an exceptionally severe sanction: her divorce complaint was dismissed, and she is barred from testifying in support of her claims, presenting affirmative evidence or calling her own expert witnesses. She can still challenge John Overdeck’s case through cross-examination.
The judge cites emails, a phone and a private mailbox
According to a transcript of the court proceedings reported by the New York Post, the judge found that Laura accessed her husband’s private computer and photographed emails between him and his attorneys discussing legal strategy.
The court also focused on what happened afterward.
According to the judge, Laura did not produce the phone containing those photographs for at least 13 months despite court orders. By the time the phone was eventually turned over, the images had been deleted. She reportedly said the deletion occurred because the phone was running out of storage.
The judge also found that she obtained an additional key to John Overdeck’s private post office box and accessed mail inside it, but did not disclose what she had taken or return it.
Taken together, Judge Buechler determined that the violations had a cumulative effect serious enough to warrant the unusually harsh restriction.
Laura Overdeck’s legal team is appealing the ruling.
And there is potentially $6.2 billion on the table
The procedural fight is only one layer of a much larger financial battle.
Laura Overdeck is seeking 35% of John Overdeck’s interest in Two Sigma Investments, a Manhattan-based quantitative hedge fund managing roughly $80 billion.
Her attorneys value that share at approximately $6.2 billion. John Overdeck’s side disputes that valuation and says the 35% interest would instead be worth about $4.9 billion.
His attorney has said Laura was offered approximately $723 million in tax-free equitable distribution.
Her side previously characterized the settlement offer as approximately $633 million.
Even by the standards of ultra-high-net-worth divorces, the difference is enormous.
Hundreds of millions of dollars separate the two sides before the court even reaches the central dispute over the value of Two Sigma.
The marriage came after Two Sigma was created — but before it became a giant
At the heart of the case is one complicated question:
How much of John Overdeck’s Two Sigma fortune belongs to the marriage?
John and Laura married in 2002 without a prenuptial agreement. Two Sigma had been founded shortly before their marriage.
John’s attorneys argue that the business already existed, had conducted substantial work and was managing hundreds of millions of dollars before the couple married. On that basis, they contend that his ownership interest should not simply be treated as marital property.
Laura’s attorneys tell a very different story.
They argue that Two Sigma was still in its infancy when the couple married and that the enormous growth that created today’s multibillion-dollar fortune occurred during their marriage.
That distinction could be worth billions.
She cannot testify, but she has not lost everything
The judge’s decision does not mean Laura Overdeck walks away from the marriage with nothing.
Judge Buechler made clear that the couple’s assets still have to be equitably distributed under New Jersey law.
What has changed dramatically is how Laura can make her case.
She cannot take the stand to offer affirmative testimony supporting her claims. She cannot present her own affirmative evidence in the usual way. And she cannot bring in her own valuation experts to establish what she believes John Overdeck’s Two Sigma stake is worth.
Instead, cross-examining John Overdeck and challenging the evidence presented by his side becomes far more important.
In a divorce where the difference between the parties’ positions is measured not in thousands or even millions, but potentially billions of dollars, that is an extraordinary disadvantage.
Another lawsuit sits in the background
The dispute extends beyond the divorce courtroom.
Laura Overdeck is separately suing the law firm involved in the family’s estate planning, alleging that it helped structure assets in a way that effectively “divorce-proofed” John Overdeck’s wealth while the firm was also allegedly representing her interests.
Those allegations are disputed and remain part of separate litigation.
A viral post from My Mixtapez claims Laura Overdeck rejected a $735 million settlement offer and is seeking $6.2 billion, quoting her as saying, “I’m not the woman you can run over, he knows that.”
A divorce unlike almost any other in New Jersey
At its core, this is a divorce case.
But the numbers make it anything but ordinary.
A marriage of more than two decades. No prenup. One of the world’s major hedge funds. A potential claim measured in billions of dollars. Accusations over hidden assets. A separate lawsuit against estate-planning lawyers.
And now a court ruling that prevents one spouse from taking the witness stand in support of her own case.
The financial question remains unresolved:
How much of the fortune created around Two Sigma during the Overdecks’ marriage should Laura receive?
But after the judge’s discovery ruling, another question may be just as important:
How do you fight for a multibillion-dollar divorce settlement when the court will not let you testify?
Sources: New York Post; Bloomberg reporting as cited in court coverage; My Mixtapez via X
By NJ RADAR Team