# William Greenberg

> William 'Bill' Greenberg is a theoretical-physicist-turned-financier who runs Two Harbors Investment Corp (rebranded 'Two'), the mortgage REIT whose in-house servicing engine is RoundPoint Mortgage Servicing LLC. He holds a PhD in theoretical nuclear physics and has spent 25+ years managing structured-finance portfolios at Natixis, UBS and the Swiss National Bank's StabFund before joining Two Harbors in 2012 and becoming CEO in 2020. He pushed the company to bring mortgage servicing in-house by acquiring RoundPoint in 2023, then steered the firm through a high-profile 2025-2026 takeover battle that ended with UWM Holdings agreeing to buy the company.

- **Role:** President & Chief Executive Officer at Two Harbors Investment Corp (parent of RoundPoint Mortgage Servicing LLC)
- **Organizations:** Two Harbors Investment Corp (Two), RoundPoint Mortgage Servicing LLC, UBS AG, SNB StabFund, Natixis NA
- **Nationality:** American
- **Education:** B.S. in Physics, Massachusetts Institute of Technology, M.S. in Theoretical Nuclear Physics, University of Washington, Ph.D. in Theoretical Nuclear Physics, University of Washington
- **Known for:** Earned a Ph.D. in theoretical nuclear physics before pivoting to a 25+ year career in structured finance, Managed mortgage repurchase liability risk tied to over $100 billion of RMBS and whole loans at UBS, Co-Head of Trading for the Swiss National Bank's StabFund, overseeing roughly $40 billion of legacy crisis-era RMBS, ABS and CMBS

## Career timeline

- **pre-2012** — Managing Director at Natixis NA, co-managing portfolios of RMBS and Agency mortgage servicing rights
- **pre-2012** — Managing Director at UBS AG; managed mortgage repurchase liability risk on $100B+ of RMBS/whole loans; Co-Head of Trading for the SNB StabFund managing ~$40B of legacy RMBS, ABS and CMBS
- **2012** — Joined Two Harbors Investment Corp
- **2018** — Co-Deputy Chief Investment Officer of Two Harbors (June 2018 - Jan 2020)
- **2020** — Co-Chief Investment Officer (Jan-June 2020), then appointed President & CEO in June 2020
- **2020** — Joined the Board of Directors (September 2020)
- **2021** — Held the Chief Investment Officer role through June 2021
- **2023** — Led Two Harbors' acquisition of RoundPoint Mortgage Servicing LLC to bring mortgage servicing in-house
- **2025** — Oversaw rebrand of Two Harbors to 'Two', reflecting an MSR-focused REIT strategy
- **2025-2026** — Steered the company through a competing-bid takeover process; UWM Holdings agreed to acquire Two in an all-stock deal valued around $1.3B

## Achievements

- Earned a Ph.D. in theoretical nuclear physics before pivoting to a 25+ year career in structured finance
- Managed mortgage repurchase liability risk tied to over $100 billion of RMBS and whole loans at UBS
- Co-Head of Trading for the Swiss National Bank's StabFund, overseeing roughly $40 billion of legacy crisis-era RMBS, ABS and CMBS
- Rose from Co-Deputy CIO to President & CEO of Two Harbors in roughly two years
- Architected the 2023 RoundPoint acquisition, making mortgage servicing a core in-house business
- Repositioned Two Harbors as an MSR-focused REIT and led its rebrand to 'Two'

## Latest updates

- **2025-XX** — Two Harbors rebranded to 'Two', signaling a strategy centered on mortgage servicing rights, with RoundPoint as its servicing arm.
- **2026-02** — Two reported Q4 2025 results that beat EPS forecasts; Greenberg discussed the in-house servicing strategy on the earnings call.
- **2026-XX** — A competing-bid process unfolded for the company, with UWM Holdings agreeing to acquire Two in an all-stock deal valued around $1.3 billion, creating a top-tier servicer.

## Links

- Website: https://roundpointmortgage.com
- LinkedIn: http://www.linkedin.com/in/william-greenberg-2101b658

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Profile page: https://yespress.io/william-greenberg
Published by YesPress — https://yespress.io
Last updated: 2026-06-03