Wealth is a funny thing in Manhattan. You can be the son of a legendary corporate raider, marry one of the most famous faces in financial news, and run a multi-billion-dollar asset manager—yet people still argue over your bank account balance. That’s the reality for Jonathan Steinberg. If you’ve spent any time tracking the ETF world or watching Fox Business, you’ve likely seen the name.
As of early 2026, Jonathan Steinberg net worth is estimated to be at least $131 million to $165 million.
It’s not a single, stagnant number. Most of that value is tied up in the very company he founded: WisdomTree. It’s a "paper wealth" situation that fluctuates every time the stock market sneezes. Honestly, for a guy whose father was the infamous Saul Steinberg, that number might seem modest to some. But "Jono," as his friends call him, didn't just inherit a pile of cash and retire. He built a disruptive powerhouse that currently manages nearly $100 billion in assets.
The WisdomTree Engine
Basically, you can’t talk about his money without looking at his stake in WisdomTree (ticker: WT). According to recent SEC filings from late 2025 and January 2026, Steinberg owns roughly 9.2 million shares of the company.
When WisdomTree stock trades around $14 or $15, that holding alone accounts for over **$130 million**.
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But wait, there’s more to the compensation package. In 2024 and 2025, his total yearly compensation hovered around $6.7 million. Now, don't think he's just pocketing a massive salary every month. Only about 8% of that is actual cash salary—the rest is a mix of bonuses, stock options, and equity grants. He’s essentially betting on himself. If the company does well, he gets rich. If it tanks, his net worth takes a massive haircut.
Breaking Down the Assets
- WisdomTree Stock: ~9,241,505 shares.
- Annual Pay: ~$6.75 million (mostly equity-based).
- Real Estate: A five-story Manhattan townhouse and a beach house in Westhampton.
- Angel Investments: He’s quietly backed startups like Boostr and Ethyca.
People often forget that he started as a media guy. Remember Individual Investor magazine? He was the Editor-in-Chief. He eventually pivoted that business into what became WisdomTree. It was a gutsy move that paid off, though it wasn't always smooth sailing. There were years where activist investors were breathing down his neck, trying to force a sale or change the board. He's survived those battles, which says a lot about his staying power in a room full of sharks.
The Maria Bartiromo Factor
You can't ignore the "Power Couple" dynamic here. Jonathan has been married to Maria Bartiromo since 1999. While they keep their finances relatively private, their combined household wealth is easily in the $200 million+ range. Maria, a trailblazer who was the first to report live from the floor of the NYSE, commands a massive salary at Fox Business.
They don't have children, but they do have a very famous rescue dog named Dusty. They spend their time between the city and the Hamptons. It’s a classic New York elite lifestyle, but one built on decades of 4:00 AM wake-up calls and high-stakes board meetings.
Why the Numbers Vary
If you Google "Jonathan Steinberg net worth," you’ll see some sites claiming he’s worth $80 million and others saying $170 million. Why the gap?
- Stock Volatility: WisdomTree is a public company. If the market dips, his net worth drops $10 million in a single afternoon.
- Private Holdings: We don't know exactly how much he inherited from his father, Saul, or what his private investment portfolio looks like.
- Incentive Plans: He often receives "Performance-based Restricted Stock Units." These don't "count" as part of his net worth until they actually vest.
What Most People Miss
The real story isn't just the dollar amount. It's the transition from "son of a billionaire" to "self-made ETF pioneer." Saul Steinberg was known for hostile takeovers. Jonathan, conversely, built something from scratch. He pioneered fundamentally weighted ETFs, which was a radical idea when most people were just blindly following the S&P 500.
He's also leaning heavily into blockchain. Under his leadership, WisdomTree launched "WisdomTree Prime," an app for digital assets and gold. He’s clearly trying to future-proof his wealth by moving beyond traditional finance.
How to Apply This Knowledge
If you’re looking at Steinberg’s trajectory to inform your own financial moves, here are a few takeaways:
- Equity is King: Steinberg’s wealth didn't come from a paycheck; it came from owning a piece of the machine. If you're an entrepreneur or executive, prioritize equity over salary for long-term growth.
- Diversify Through Innovation: He didn't stay in print media when the internet arrived. He pivoted to ETFs. Now he's pivoting to blockchain. Always look for the next "wrapper" for value.
- Survive the Activists: Whether it’s a boss or a literal activist investor, staying power is a skill. Steinberg’s net worth remained intact because he didn't blink during corporate proxy wars.
- Track Insider Trading: If you want to know how he feels about his own company, watch the Form 4 filings. In late 2024, he was actually buying more shares. That’s usually a signal of confidence that most retail investors miss.
To get a true sense of where his wealth is headed, keep an eye on WisdomTree’s quarterly earnings reports and their total Assets Under Management (AUM). As that AUM grows toward the $100 billion mark, expect Steinberg's net worth to climb right along with it.