GMSA InvestmentsLtd
Independent Fixed Income Specialists
Mayfair · London · Est. 2006
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This website and its services are not available to Retail Clients.
GMSA Investments Ltd is authorised and regulated by the Financial Conduct Authority (FRN 460724) · Full Scope £750K Non-SNI Investment Firm · MIFIDPRU
Independent Fixed Income Specialists

Precision access to credit, emerging markets & primary fixed income.

GMSA Investments provides execution, market intelligence and fixed income solutions across global credit and emerging markets, built on relationships rather than volume.

INDICATIVE MARKET DATA · 14 SEP 26US 2Y 4.63US 10Y 4.96US 30Y 5.35BUND 10Y 3.55BTP 10Y 3.94GILT 10Y 5.36BTP–BUND 39bpINDICATIVE MARKET DATA · 14 SEP 26US 2Y 4.63US 10Y 4.96US 30Y 5.35BUND 10Y 3.55BTP 10Y 3.94GILT 10Y 5.36BTP–BUND 39bp
Indicative market data only. Not an offer, indication of tradable price or recommendation. Data shown for information purposes and may be delayed or no longer current.
What we do

Three specialisms, one desk.

Market coverage and relative-value analysis across the fixed-income spectrum, from investment grade through high yield to distressed and less-covered names, spanning developed and emerging markets.

We share bond lists, market colour and commentary directly with clients, drawing on our market relationships and knowledge of available liquidity.

Investment GradeHigh YieldEM Sovereign & CorporateDistressed
GLOBAL SOVEREIGN YIELDS10-YEAR BENCHMARKSUS4.67%UK4.97%IT · BTP3.94%DE · BUND3.16%BTP–BUND 78 bpINDICATIVE · ILLUSTRATIVE

We follow the new-issue calendar across global credit markets, from issuer roadshows and reporting through to bookbuilding.

Using proprietary analytical tools, including AI-supported techniques, we compare new issues with secondary-market levels and comparable issuers to support our assessment of relative value alongside the syndicate’s guidance.

New IssuesRoadshowsBookbuildingAI Relative Value
US TREASURY CURVEON-THE-RUN BENCHMARKS4.04.55.04.182Y4.365Y4.6710Y5.2330YINDICATIVE · ILLUSTRATIVE

Execution is never just a cost. Done well it compounds: over the medium term, the quality of execution makes a real difference to performance. We provide an independent, professional service, helping clients navigate timing and liquidity where judgement and relationships matter as much as price.

Looking after family offices and wealth-management clients is in our DNA. It is what our people have done throughout their careers. We take the time to understand what each of them needs.

Our trading and operations teams work closely together, supporting an integrated process from execution through confirmation and settlement.

ExecutionClient CoverageFamily OfficesIntegrated Operations
MAYFAIR · LONDONTHE DESK22 Conduit StreetLondon W1S 2XR51.5129°N · 0.1411°W
Where we operate

Across the full credit spectrum.

01 · IG
Investment Grade
02 · HY
High Yield
03 · EM
Emerging Markets
04 · DS
Distressed & Special Situations
Lower yield / riskHigher yield / risk
Investment GradeHigh-quality corporate & financial credit, rated BBB- and above.
How we work

From execution to settlement, one integrated process.

01

Coverage & relative value

We cover relative-value opportunities across the credit spectrum and share bond lists, market colour and commentary directly with clients.

02

Relative-value check

Every new issue is compared with secondary-market levels and comparable issuers using proprietary analytical tools, including AI-supported techniques.

03

Execution & settlement

Careful execution on the desk, with trading and operations working closely together through confirmation and settlement.

About GMSA

An independent specialist, built on relationships.

GMSA Investments Ltd was established in London in 2006 and authorised by the Financial Conduct Authority in 2007. The firm operates as a Full Scope £750K Non-SNI Investment Firm under the MIFIDPRU rulebook.

Since then, the firm has built its business as an independent alternative for clients navigating global credit and emerging markets, grounded in long-standing relationships of trust with the families and family offices it serves.

2006Founded in London
2007FCA Authorised
£750KNon-SNI Investment Firm
Our team

The people behind the desk.

GM

Gian Marco Mondini

Managing Partner · Chief Executive

Founded GMSA in London in 2006 and has led the firm since. Began his career at a major US investment bank, then at a boutique asset manager running Italian small and mid-cap equity portfolios, before moving into fixed income and building the firm’s business across global credit and emerging markets. BSc Economics and Finance, European Business School, London.

SL

Stephen Lane

Partner

Two decades at the centre of global credit trading, in London and across Asia. Began on ABN Amro’s Global Flow Credit Trading desk, then ran Global Credit Trading for Europe and Asia at Calyon. Credit trader at Santander GBM, then at Compass Asset Management. A Partner of GMSA since 2014, helping shape and implement the firm’s business strategy.

AR

Angelo Rossetto

Director · Head of Compliance

Began at Nomura in 2000 as an Origination Analyst, then a Senior FX Trader at Alpari UK, running a book with monthly turnover above USD 50bn. With GMSA since inception in 2006, first heading execution and trading, then moving into risk control and compliance. Head of Compliance since 2017. MSc Finance, Imperial College; BSc, LSE.

FP

Fabian Pagano

Director

Joined GMSA in 2011 from ICAP plc, where he ran the Italian desk covering institutional clients and asset managers. Over 20 years in fixed income, now a Director of the firm, specialising in institutional client coverage across investment grade, high yield and emerging markets, with a focus on the secondary market alongside new issues.

DR

Dante Rossi

Head of Trading & Execution

Twenty years in credit, on both the sell side and the buy side. Started at Monte dei Paschi di Siena in 2005, market-making financial bonds and trading CDS, then seven years at Banca Profilo running the bank’s banking book as a proprietary trader. Corporate bond market maker at Method Investment & Advisory, then portfolio manager at Redhedge, co-heading a long/short relative-value credit fund. Joined GMSA in 2018 as Head of Trading and Execution, where he has developed and optimised the firm’s trading and execution framework.

AV

Antonin Vinet

Senior Sales

Joined GMSA in 2013, previously at Bear Stearns, J.P. Morgan, Aladdin Capital and Conduit Capital Markets. 20 years across fixed income: corporate and bank bonds, structured products, loans and claims. Covers institutional clients across investment grade, high yield and emerging markets, with a focus on the secondary market alongside new issues.

AP

Alessia Perlino

Head of Operations

Began her career at Atlantide in 2014 as a junior in operations, covering trade capture, matching, confirmations and the daily reconciliation of cash and securities positions with custodians and clearers. Joined GMSA in 2016 and moved into a senior operations role, taking responsibility for settlement across the major clearing systems and custodians. Appointed Head of Operations in 2022, she now leads the firm’s post-trade function, working alongside the desk.

MC

Michael Carlini

Sales

Joined GMSA in 2024 in settlement and operations, covering settlement across the major clearing systems and custodians and daily reconciliation. Moved to the front office in 2026 and now covers institutional clients across credit and emerging markets, working with the desk on flow, new issues and market colour.

AA

Alessandra Annunziata

Head of Accounts & Finance

Joined GMSA in 2010 and has held a range of roles across the business as it grew, supporting the desk and the operational side of the firm, before taking charge of the finance function. Now Head of Accounts & Finance, with responsibility for the firm’s accounting, financial reporting and regulatory returns.

“Our clients include family offices, funds and corporates, seeking an independent, professional alternative to the global investment banks.”
Our Clients
Operations & compliance

Built to settle cleanly, run properly.

Our trading and operations teams work closely together, supporting an integrated process from execution through confirmation and settlement. We settle across the major clearing systems and custodians, with straight-through processing and confirmations issued promptly following execution.

Settlements  operations@gmsauk.com · +44 20 3411 4180

GMSA Investments Ltd is authorised and regulated by the Financial Conduct Authority (FRN 460724) and operates as a Full Scope £750K Non-SNI Investment Firm under the MIFIDPRU rulebook. This website and our services are intended for Professional Clients and Eligible Counterparties only, as defined by the FCA Rules. They are not directed at Retail Clients. Nothing on this website constitutes investment advice, investment research, or an offer or invitation to buy or sell any security or financial instrument.

Additional regulatory information is available on request, where applicable.
Compliance  compliance@gmsauk.com · +44 20 3411 4186
Complaints  See our Complaints Handling Procedure above
Contact

Get in touch with the desk.

Thank you. The desk will be in touch shortly.
Trading
trading@gmsauk.com

+44 20 3411 4186

Settlements
operations@gmsauk.com

+44 20 3411 4180

GMSA Investments Ltd
Second Floor
22 Conduit Street
Mayfair, London, W1S 2XR

22 Conduit Street · Mayfair