Senator Investment Group

Douglas Silverman, who co-founded the firm alongside Alexander Klabin in 2008, leads investment strategy as Managing Partner. Klabin stepped back from his co-chief investment officer role in 2023 but remains a senior advisor and partner. Silverman previously managed a portfolio at S.A.C. Capital Advisors, and Klabin worked as an analyst at both S.A.C. and Highbridge Capital prior to launching Senator.

Senator relies on a combination of deep sell-side relationships, restructuring advisory networks, and its internal research platform to source investments. The firm's willingness to write complex structured instruments — such as convertible preferred equity facilities — often places it in negotiated, bilateral deal settings rather than competitive auctions. Its reputation as a crisis-era lender gives management teams and sponsors a reason to call when conventional bank financing is difficult to secure.

Senator operates as a hybrid, investing across public equities, private credit, and structured capital solutions. The firm does not fit neatly into a single bucket: it runs a concentrated multi-strategy public-markets book alongside direct lending and bespoke private investments, often holding positions for multiple years. This structure more closely resembles a permanent-capital merchant bank than a traditional Tiger Cub or multi-manager hedge fund platform.

The firm invests across the capital structure: common equity, preferred equity, convertible bonds, mezzanine debt, senior secured loans, and debtor-in-possession facilities. Its 2019 investment in Diebold Nixdorf took the form of a $200 million convertible preferred facility, a structure that gave Senator downside protection through the preferred coupon while retaining equity upside through the conversion feature.

Senator has been an active participant in corporate restructurings, providing rescue financing and debtor-in-possession facilities to companies in chapter 11 proceedings. The firm was one of the lenders involved in Valaris' restructuring, a major offshore drilling contractor that emerged from bankruptcy in 2021. Senator's credit underwriting often targets asset-heavy or cash-flow-generative businesses undergoing temporary dislocation rather than secularly impaired industries.

Alexander Klabin stepped back from day-to-day investment oversight in 2023, shifting to a senior advisory role while retaining his partnership interest. The move consolidated investment decision-making under Douglas Silverman's leadership. Senator has not publicly disclosed succession plans beyond this transition, and the firm has historically maintained a closely held partnership structure without external stakeholders.

Yes, Senator manages capital on behalf of external institutional investors including endowments, foundations, pension funds, and sovereign wealth funds. Unlike a single-family office that would exclusively manage partner capital, Senator operates a pooled vehicle that integrates partner capital alongside third-party commitments — a structure common among multi-strategy asset managers.