Michael Nierenberg

When it comes to evaluating Michael Nierenberg’s asset-management conglomerate Rithm Capital — which also doubles as a publicly traded real estate investment trust and one of the larger office owners in New York — it makes sense to go by the numbers.

As recently as 12 years ago, the firm had a mere $2.7 billion in assets under management. Today, through mergers and acquisitions and several crafty decisions, Rithm Capital now holds over $100 billion in investable assets, including $63 billion in AUM and a $53 billion balance sheet. Its real estate and credit strategies are executed across several operating companies that include Genesis Capital, NewRez and Sculptor.

In 2025, Sculptor — Rithm’s alternatives subsidiary — closed on its $4.6 billion Sculptor Real Estate Fund V, its largest fund to date. NewRez, a non-bank mortgage originator and servicer, originated more than $60 billion in business, making it the third-largest mortgage servicer in the U.S. And last year Genesis Capital established itself as one of largest non-bank construction lenders with $6.5 billion in credit investments.

“We’re really an asset management business that operates under a REIT structure,” Nierenberg told Commercial Observer. “We want to get to the real scale in our asset management business and separate that business from other parts of the firm — that will create more value for shareholders.”

Then there was the big play in the office space in September. Rithm acquired Paramount Group’s entire 16-building New York and San Francisco office profile for $1.7 billion, rebranding the firm as Elecor Properties in April, and infusing it with $250 million of capital improvements.

“We’re creating what we think is one of the premier office portfolios in the world,” Nierenberg said.

Rithm Capital also acquired Crestline, a $17 billion private credit and insurance firm, in an ambitious push late last year into the world of non-bank lending.

So, with alternatives investing, private credit loans, mortgage services, construction loans and office development and investment sales, it seems Nierenberg touches almost every corner of CRE capital markets. “We have all the pieces,” he said.