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Banks & Fintechs integration

Marex balances and margin calls, in Round

Connect your Marex accounts with your API credentials to keep balances in sync with Round, and forward margin calls straight in.

Round
Marex
Capabilities

What you can do with Marex

01

Multiple Marex accounts

Connect more than one Marex account to a single Round organisation.

02

Secure API authentication

Authenticate with your Marex client ID and secret.

03

Balances kept current

Your Marex account balances stay up to date in Round.

04

Margin calls by email

Forward Marex margin calls to Round by email.

FAQs

With your Marex API client ID and secret.

Yes. You can connect multiple Marex accounts to one Round organisation.

More yield. Less admin. Let us show you.

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Disclaimers:
Nothing on this site is a recommendation to invest. Round does not offer financial advice. If you are unsure about investing we encourage you to speak to a financial advisor. Your capital is at risk when investing. More information here.
Round Financial Limited is authorised and regulated by the Financial Conduct Authority (FRN: 1050315), registered in England and Wales with company number 14609702. Registered office Senna Building, Gorsuch Place, London, E2 8JF, United Kingdom.
Round Financial Limited is an agent of Plaid Financial Limited, an authorised payment institution regulated by the Financial Conduct Authority under the Payment Services Regulations 2017 (Firm Reference Number: 804718). Plaid provides you with regulated account information services through Round as its agent.
Round acts as an Introducer to Insignis Asset Management Limited (Insignis Cash). Round receives a revenue share in return for introducing clients to Insignis Cash. Insignis Cash is a trading name of Insignis Asset Management Limited (Company number 09477376). Insignis Asset Management Limited is authorised by the Financial Conduct Authority under the Payment Service Regulations 2017 (813442) for the provision of payment services.
Keel Money Ltd. Ltd is an Electronic Money Institution authorised by the Financial Conduct Authority under the Electronic Money Regulations 2011 (FRN 1020783). Client funds are safeguarded in UK- or EEA-authorised credit institutions but are not protected by the Financial Services Compensation Scheme. Round Financial Limited is appointed under Regulation 33 of the EMRs to distribute and/or redeem electronic money on behalf of Keel Money Ltd. and is not itself authorised to issue electronic money or provide payment services. More details can be found in the Keel End-User T&Cs, which you must agree to before using any services provided by Keel Money Ltd..
* Rates quoted are the net daily yield from BlackRock ICS Sterling Liquidity Fund as of 13 November 2025. Performance shown as Annual Equivalent Rate (AER) — the annualised rate of return based on daily-compounded NAV growth, including BlackRock fees and Round fees. See pricing page for more details.
** Withdrawal requests must be made by 10:30am for funds to be in your account by the end of the day.
***Assuming your business is eligible for up to £120,000 FSCS protection. Balances over £120,000 per bank will not be protected across all your cash holdings. The Financial Services Compensation Scheme (FSCS) does not cover any e-money products or any products offered by Frost Money Ltd. E-money is not a deposit, savings or investment product and is therefore not protected by the FSCS.
Ratings
G2
4.9 stars
Certificates
Senna Building, Gorsuch Place, E2 8JF