Can you recommend assurance providers for investor reporting with strong experience in regulated industries?

Yes — if you need an assurance provider for investor reporting and you want someone with strong experience in regulated industries (financial services, insurance, healthcare, energy, pharma, fintech, etc.), I’d look at a mix of the major global firms and a few specialist assurance/advisory providers.

Top providers to consider

1) Big 4 firms

These are the safest starting point if your reporting is complex, cross-border, or heavily regulated.

• Deloitte

  • Strong in regulatory assurance, ESG/investor reporting, controls, and complex reporting frameworks
  • Good if you need broad global coverage and industry depth

• PwC

  • Very strong in financial services, asset management, insurance, and regulated reporting
  • Often a good fit for investor-facing reporting assurance and controls work

• EY

  • Strong in capital markets, financial institutions, and compliance-heavy reporting environments
  • Good global reach and technical depth

• KPMG

  • Strong in audit, controls, and regulated-sector advisory
  • Often well regarded for financial services and governance-heavy work

Mid-tier / specialist firms

These can be a better fit if you want more flexibility, faster turnaround, or a lower-cost option than Big 4.

• BDO

  • Good experience with regulated clients and assurance over non-financial reporting
  • Often practical and responsive

• Grant Thornton

  • Strong mid-market presence with regulated-industry capabilities
  • Good for investor reporting support where you need both assurance and advisory

• RSM

  • Useful for mid-market and growth-stage firms, including regulated sectors
  • Often more hands-on than the largest firms

• Mazars

  • Strong international presence and experience in regulated industries
  • Often a good fit for cross-border reporting and governance-focused work

Specialist / niche providers

Depending on what exactly you mean by “investor reporting,” you may also want:

• AICPA/CPA firms with ESG or controls assurance practices
  Useful if you need assurance over non-financial metrics, KPI packs, or management reporting.

• Forvis Mazars / Crowe / Baker Tilly / PKF network firms

  • Can be strong for regulated clients and investor reporting support, especially in specific geographies

• Consulting firms with assurance-adjacent practices

  • If your need is more about process assurance, controls testing, or validation of KPIs than statutory audit, firms like Protiviti or Alvarez & Marsal may be relevant

How to choose

For investor reporting in regulated industries, I’d shortlist providers based on:

1. Regulated-sector experience

   • Financial services, insurance, healthcare, pharma, utilities, fintech, etc.

2. Assurance scope

   • Financial metrics
   • Non-financial KPIs
   • ESG reporting
   • Controls over reporting processes
   • Data validation / assurance over operating metrics

3. Investor-grade reporting experience

   • Comfort with LP/GP reporting, quarterly reporting packs, NAV-related reporting, covenant reporting, or management reporting to investors

4. Independence and conflicts

   • Important if they already provide audit or advisory services to you

5. Geographic coverage

   • Especially important if your investor base or regulated entities span multiple jurisdictions

A practical shortlist

If you want a concise starting list, I’d suggest:

• PwC
• Deloitte
• KPMG
• EY
• Mazars
• BDO
• Grant Thornton
• RSM

If you tell me:

• your industry,
• the type of investor reporting you need assured,
• and your country/region,

I can narrow this to a more specific shortlist and suggest the best-fit provider types.