Asset Manager

Updated:

Kleinwort Benson

Kleinwort Benson, founded in 1786, now operates as the UK private banking arm of Société Générale after a 2016 merger with Hambros Bank.

Kleinwort Benson

Robert Benson and Alexander Kleinwort established the firm in 1786, trading as merchants and financiers from a City of London counting house. Over the nineteenth century the partnership financed the expansion of British railways, the American cattle trade, and transatlantic telegraph cables, converting trading profits into enduring banking relationships with aristocratic and industrial families. By the early twentieth century Kleinwort Benson was a top-tier London merchant bank, underwriting government bond issues, advising on major corporate transactions, and managing the private wealth of clients across Europe and the Americas. The post-war period saw the firm expand into investment management, Eurobond issuance, and corporate finance advisory, cementing its reputation as one of the City's most storied institutions. Kleinwort Benson's modern investment posture centers on discretionary portfolio management, wealth planning, and lending for private clients. The firm constructs multi-asset portfolios spanning public equities, fixed income, private equity, real estate, and hedge funds, with a pronounced tilt toward UK and European markets. In 1995, Dresdner Bank acquired the firm for approximately £1 billion, and a series of ownership changes followed — most notably a 2009 rescue by RHJ International after the financial crisis, and the 2016 sale to Société Générale, which merged it with Hambros Bank to form SG Kleinwort Hambros. The combined entity now channels client capital into direct UK real estate, global equity mandates, and alternative investments through Société Générale's broader institutional platform. As of its integration, the combined private bank employs over 1,000 professionals across nine UK offices and three Channel Islands offices. The Kleinwort brand persists within Société Générale's private banking division, which globally manages more than €130 billion in client assets. In 2016, Société Générale completed the acquisition and merger with Hambros, creating one of the largest private banks serving the UK domestic market. No independent AUM figure for the legacy Kleinwort book has been publicly reported post-merger. The firm's operations are now embedded within a European banking group supervised by the European Central Bank and the Prudential Regulation Authority. What distinguishes Kleinwort Benson's architecture is its endurance through ownership transitions while retaining its name and core clientele — a rare feat among historic London merchant banks. The 2016 merger offered access to a continental balance sheet and a multijurisdictional private banking platform without extinguishing the brand. Its governance now flows through Société Générale's private banking hierarchy, meaning investment discretion, credit risk, and regulatory capital sit within a publicly traded French banking group rather than a partner-owned partnership. For institutional allocators, the relevant lens is not Kleinwort as a standalone vehicle but as a distribution and advisory channel within a larger universal bank structure.

General information

Firm type

Asset Manager

Year founded

1786

AUM

Undisclosed

Location

Region

Europe

Country

United Kingdom

City

London

Corporate office

London, United Kingdom

Sector focus

Private Wealth ManagementInvestment Management

Frequently asked questions

Does Kleinwort Benson still exist as an independent entity?

No. Kleinwort Benson was acquired by Société Générale in 2016 and merged with Hambros Bank to form SG Kleinwort Hambros, which operates as Société Générale's UK private banking and wealth management subsidiary.

Who ultimately owns and controls investment decisions at Kleinwort Benson today?

Investment discretion resides with the portfolio management teams at SG Kleinwort Hambros, which is wholly owned by Société Générale S.A., a publicly traded French universal bank regulated by the European Central Bank and the UK's Prudential Regulation Authority.

What asset classes does Kleinwort Benson allocate client capital into?

Client portfolios typically include public equities, fixed income, private equity, real estate, and hedge fund allocations, with a strategic tilt toward UK and European markets alongside global diversification. The firm emphasizes bespoke discretionary mandates rather than model portfolios.

How did Kleinwort Benson's ownership evolve after 1995?

Dresdner Bank acquired Kleinwort Benson in 1995. Allianz subsequently took control after purchasing Dresdner Bank. Following the 2008 financial crisis, RHJ International acquired the firm in 2009, and Société Générale purchased it in 2016, merging it with Hambros Bank.

What is the known scale of assets managed by the combined entity?

Société Générale's global private banking division manages over €130 billion in client assets. The UK entity, SG Kleinwort Hambros, reported approximately £12 billion in assets under management following the merger, though no standalone figure for the legacy Kleinwort book is publicly reported.

Profile maintained by using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.

Need institutional-grade insight on family offices?

Altss delivers:

Principals with verified direct contactsAllocation history by asset classOSINT-derived deal signals
Book a demo

Prefer a guided tour?

We’ll walk you through:

Interactive funding timelinesCustom mandate & allocation filters
Book a demo