An independent credit valuation firm.

markst operates Verus, a deterministic valuation platform for private credit funds, banks and institutional investors. Verus prices books continuously and reproducibly, so the fund’s own valuation officer signs the mark with evidence rather than judgement.

Founder · markst

Mehmet Mazi

A senior markets executive with extensive experience across credit, rates, financing and institutional trading. Mehmet spent more than three decades in senior roles at a global bank, where he built and led a global private-credit business within its markets division, before founding markst.

The firm reflects a conviction that private credit valuation requires greater consistency, transparency and methodological discipline, particularly where valuations must stand up to internal governance, auditor review and regulatory scrutiny. Opacity has clouded the reputation of even disciplined operators; markst exists to make that distinction visible again.

Senior Credit Advisor · markst

Martin Holcombe

A senior banker and risk-management specialist with four decades of experience in wholesale credit risk at a leading global bank, Martin is recognised as a senior restructuring specialist across multiple jurisdictions.

Most recently he served as Global Head of the bank’s Special Credit Unit, leading the management of distressed credit alongside a significant transformation programme. Martin is Senior Credit Advisor to markst.

What we build — and what we don’t.

Deterministic by construction

No black-box ML in the core pricing engine. Same inputs, same engine version, same outputs — reproducible to the basis point across runs, months and auditors. The methodology is published and versioned; see the methodology page.

Audit-first

Every valuation run carries an immutable audit record with the exact deal version, assumption version, and engine configuration used. A mark run today reproduces to the basis point in any later year, against the engine version that produced it. IFRS 13 / ASC 820 classification is machine-readable on every output.

Reference data included

BSL facilities (production corpus under construction), BDC holdings, FRED rate curves and the Verus spread composite are ingested and versioned inside the platform — not a separate vendor contract. Every mark carries a provenance chain back to the public source.

What we don’t sell

Signed third-party opinions. Bespoke methodology on request. Origination, trading or brokerage. Verus is the engine your valuation officer runs; the fund’s own name is on the mark, and the accountability stays with the fund. When an independent signed opinion is required, we coexist with the advisory firms that provide them — we don’t replace them.

See a sample report Read the methodology Browse the API

The firm.

Entity

MARKST LTD — registered in England and Wales. Company no. 17164595.

Headquartered

45 Albemarle Street, Floor 3, London W1S 4JL. We work with clients across the UK, Europe and the Middle East.

Posture

Independent. markst holds no positions and sells no research product tied to a manager or instrument. Every valuation run follows the published methodology — nothing negotiated, nothing bespoke. The full posture is codified in our conflicts of interest policy.

Team

The markst team is being built for scale, with experts in credit, valuation, technology, compliance and cybersecurity. Named hires will be disclosed as they join.

Standards

Workflows aligned to IFRS 13 / ASC 820 fair-value classification, IFRS 9 expected credit loss, and SR 11-7 model risk management. SOC 2 and ISO 27001 on the controls roadmap.

Engagements

Paid data-room trials followed by annual retainers. Pricing is transparent and based on coverage cadence, position count, and asset-class mix.

Get in touch.

We respond to every qualified enquiry within one business day. A mutual NDA is signed by both parties — via our click-through signing surface at submission time — before any sensitive material is shared.

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