SG Capital Partners

What SG Capital Partners does

SG Capital Partners LLC is a privately held, Stamford, Connecticut-based financial services firm founded in 2014 by Justin Mahoney that specializes in offering complete financial lending programs and solutions for residential and commercial borrowers. The firm operates as a non-prime mortgage originator, producing seasoned residential mortgage loans for inclusion in private-label residential mortgage-backed securities (RMBS) transactions. Its most prominent disclosed activity is as one of two main co-originators — alongside Amwest Funding Corp. — of the OBX 2026-R2 Trust, a $407.3 million non-prime RMBS securitization backed by 947 seasoned residential mortgages.

Operationally, SG Capital Partners runs a lean origination platform with a disclosed headcount in the 11–50 employee range, focused on loan production rather than balance-sheet lending at scale. The core workflow appears to be: originate non-conforming residential (and adjacent commercial) loans, pool seasoned production, and distribute via securitization vehicles into capital markets — a classic originate-to-sell model that monetizes loans through origination fees and gain-on-sale economics rather than net interest margin.

Information gaps are material: revenue is not disclosed, customer/borrower segments are not enumerated, no products or pricing terms are publicly available, and no management team beyond the founder is documented. The website (sgcp.com) was not accessible during data capture. As a result, the firm's full product breadth, geographic licensing footprint, and channel mix cannot be characterized beyond the residential non-prime securitization activity evidenced by the OBX 2026-R2 Trust transaction.

Name

SG Capital Partners

Legal name

SG Capital Partners LLC

Website

https://www.sgcp.com/

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

SG Capital Partners is a privately held Stamford, Connecticut-based non-prime mortgage originator founded in 2014 by Justin Mahoney, producing seasoned residential loans for RMBS securitization and offering broader residential and commercial lending programs.

Ownership category

akta.pro rank

Product category

Mortgage Lending

NAICS

Mortgage and Nonmortgage Loan Brokers (52231), Mortgage and Nonmortgage Loan Brokers (522310), Commercial Banking (522110), Depository Credit Intermediation (5221)

SIC

Mortgage Bankers & Loan Correspondents (6162), National Commercial Banks (6021), Short-Term Business Credit Institutions (6153)

akta.pro primary industry

Middle-Market Lending (FSANADAI)

akta.pro secondary industry

Venture Debt Providers (FSANAAAL)

Keywords

• Mortgage lending
• Residential lending
• Commercial lending
• Mortgage origination
• Non-prime mortgages

Headquarters

HQ city

Stamford

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Core offering

SG Capital Partners LLC provides complete financial lending programs and solutions for residential and commercial businesses. The company originates non-prime residential mortgages, serving as a main originator for securitization transactions such as mortgage-backed securities trusts. Its lending activities include co-origination of mortgage loans bundled for inclusion in structured finance deals.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Mortgage Lending Programs Financial lending programs for residential businesses, including origination of non-prime residential mortgages bundled into securitization transactions such as mortgage-backed securities trusts.
• Commercial Lending Programs Complete financial lending solutions for commercial businesses.
• Mortgage Securitization Origination

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Amwest Funding Corp.coreStrategic or Co-development PartnerAmwest Funding Corp. and SG Capital Partners LLC served as the two main originators for the OBX 2026-R2 Trust, a $407.3 million non-prime residential mortgage-backed securities transaction backed by 947 seasoned residential mortgages. The partnership involves co-origination of mortgage loans for inclusion in securitization transactions.

Scale indicators1 record

Recent moves3 records

Expansion highlights3 records

Direct peers

• Newfi: Non-QM residential mortgage originator that funds loans for its own account and sells them into securitization or whole-loose trades. Highly comparable to SG Capital's non-prime residential origination and securitization model evidenced by the OBX 2026-R2 deal.
• Angel Oak Mortgage Solutions: Non-QM mortgage origination arm of Angel Oak Capital Group, focused on residential loans that are aggregated and securitized. Directly comparable product set and securitization exit to SG Capital's non-prime RMBS activity.
• Deephaven Mortgage: Specialty non-prime and investor-focused residential mortgage originator with a securitization-heavy funding model. Comparable to SG Capital in targeting non-QM borrowers and distributing via MBS.
• A&D Mortgage: Non-QM wholesale and retail mortgage lender known for securitization executions of non-prime residential paper. Closely comparable in product mix and securitization-driven business model.
• Athas Capital Group: Non-QM residential mortgage lender with both retail and wholesale channels and a securitization program. Comparable specialty focus and origination-to-securitization workflow.
• Civic Financial Services: Private money and non-QM mortgage lender that originates residential and small-balance commercial loans. Comparable hybrid residential/commercial non-bank lending model to SG Capital.

Emerging players

• Verus Mortgage Capital: Non-QM MBS issuer and aggregator that purchases loans from originators. Comparable on the securitization side of SG Capital's business, though positioned more as a buyer/program manager than direct originator.

Broad incumbents

• Caliber Home Loans (now Newrez): Large residential mortgage originator with significant non-QM and correspondent channels. Overlaps SG Capital's residential origination business, but at materially larger scale and broader product set.
• loanDepot: National retail and wholesale residential mortgage lender with a non-QM offering. Comparable product category, but materially larger and more diversified than SG Capital.
• United Wholesale Mortgage (UWM): Largest US wholesale mortgage lender. Operates broadly in the same residential origination space as SG Capital, though predominantly in agency/conforming rather than non-prime; useful as a scale benchmark.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• Xx.com/sgcapitalp

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SG Capital Partners