Meet Mark
Mark Sabbagh is a New Jersey–based founder, CEO, investor, and advisor. He co-leads Diamond Trading Group and Diamond Appliance Group and founded Gotham Venture Partners, working closely with entrepreneurs to build and scale practical, cash-flow-driven businesses rooted in relationships and execution.
The Quiet Force Behind the Momentum
There is an intensity to Mark Sabbagh that doesn’t announce itself loudly. It shows up in how he listens, stays steady under pressure, and keeps moving when conditions shift. He doesn’t talk about success as a finish line. For him, it’s a practice of showing up, making decisions, and standing by people when things are uncertain.
“I always had a fire in me to build a business, Once the opportunity presented itself, I went all in.”
Learning Responsibility Early
Mark entered the insurance industry at 18, young enough to be learning the rules of adulthood while already carrying real responsibility. By 22, his life changed abruptly with the loss of his mother. Grief reshaped his sense of urgency and clarity. It wasn’t just about career moves anymore, it was about meaning.
After stepping away from insurance, he joined his brother in the consumer electronics trading business. For three years, Mark learned how markets move, how risk feels in real time, and how trust becomes currency. Those years weren’t glamorous, but they were foundational.
Choosing the Harder Path Again and Again
Another turning point came when Mark decided to partner with a friend in the housewares business, a partnership that still defines much of his professional life today. Together, they helped grow the company and launched Diamond Trading Group in the middle of the pandemic. The timing was brutal. Supply chains were unstable. Markets were anxious. Inflation, tariffs, and constant shifts tested every assumption.
“There are so many breaking points,” Mark reflects.
“Big customers. Market shifts like the pandemic, inflation, tariffs. Finding the best people.”
What kept things moving wasn’t certainty, it was pressure-tested trust. “Today, we have them,” he says simply, referring to his team.
The pandemic didn’t slow his momentum. It clarified it. In that same window, Mark leaned into investing through Gotham Venture Partners, driven by a desire to work shoulder-to-shoulder with founders. In 2024, he co-founded Diamond Appliance Group, expanding into appliances with a focus on builders, developers, and property managers who needed reliability more than promises.
Work Built on Relationships, Not Noise
Across all of Mark’s ventures, the throughline is execution. He’s not interested in optics, he’s interested in follow-through. DTG operates lean, moving product without holding inventory. DAG focuses on pricing transparency and service that respects timelines. Gotham Venture Partners with founders who want involvement, not distance.
What matters most to him, though, isn’t scale alone.
“My team and being able to work under pressure that’s everything, He talks often about people who contributed across my businesses,” naming partnership as a competitive advantage, not a soft value.
Giving back is woven into the structure, not tacked on at the end.
“We’re very big on giving back and helping our community and the world at large,”
It’s a reflection of how he defines success: “Healthy and happy family, love for your work, great friends, and faith.”
A Bigger Ecosystem in Mind
Mark’s long-term vision is expansive but; grounded to build a global holding company and ecosystem of businesses that support one another. Not disconnected ventures, but operating companies that share values, discipline, and accountability.
He draws inspiration from builders who endured pressure and complexity at scale; Steve Schwarzman, Jon Gray, John Rockefeller, Warren Buffett not for their stature, but for their resilience.
“Know the greatest who ever did probably went through a lot worse,” he says.
Perspective keeps him steady.
Staying Present While Building Forward
Despite the ambition, Mark’s advice is disarmingly simple: “Stay present, focus on your goals, love what you do, and work hard.” There’s no shortcut embedded in his thinking. Manifestation, to him, is paired with action. “Work hard, manifest your dreams, and go at it.”
In the end, Mark Sabbagh’s story isn’t about titles or speed. It’s about endurance, about choosing to build again after loss, to lead through uncertainty, and to measure success by who you stand beside when the pressure is on. What he’s building may be global, but the foundation is deeply personal.
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