MethodologyGovernance Risk Score (GRS)

Governance Risk Score (GRS)

A composite 0–100 score that summarises the publicly-disclosed governance posture of an NZX-listed issuer at a point in time. Combines independent inputs across board composition, audit, ownership, and disclosure quality. The score is an aggregate observation, not a prediction.

Where you’ll see this label: /insights/governance-risk-scores

What it measures

For each NZX-listed issuer we score five independent governance dimensions on a 0–100 scale, weight them, and combine them into a single composite score. The composite then maps to one of six descriptive bands (Excellent / Very Good / Good / Adequate / Poor / Very Poor) so readers can compare across the index without interpreting a raw number.

The GRS is a snapshot of disclosed governance practice. It says nothing directly about strategy quality, financial outcomes, or future returns. It is intended as a quick signal of where an issuer’s governance disclosures sit relative to NZX-listed peers — useful for prioritising deeper research, not as a standalone investment input.

Inputs

  • director_appointments + director_skills
    Board size, independence ratio, average tenure, skill-matrix breadth, IoD-NZ designation count.
  • audit_history
    Auditor identity (Big-Four vs other), opinion type, going-concern flags, audit-firm tenure.
  • top_20_shareholders + substantial_shareholders
    Concentration of ownership, presence of related-party blocks, free float.
  • remuneration_history + executive_compensation
    Disclosure completeness, pay-mix transparency, CEO multiple to median NZX peer.
  • announcements (continuous disclosure)
    Continuous-disclosure cadence, late-filing flags, NZX RegCo investigation history.

Algorithm

Each of the five dimensions is scored 0–100 by a deterministic rules engine that compares the issuer to the NZ-listed cohort (peer-relative, not absolute). The composite is a weighted sum: board composition 25%, audit 20%, ownership 20%, remuneration disclosure 20%, continuous-disclosure cadence 15%.

The composite maps to a band:

Source code: lib/governance-risk.ts (and the governance_risk_scores_v2 table)

Tiers / scoring bands

  • Excellent (80+)
    Strong on all five dimensions; few or no known governance flags.
  • Very Good (70+)
    Strong on most dimensions; limited gaps in one area.
  • Good (60+)
    Adequate on most dimensions; one or two areas with material gaps.
  • Adequate (50+)
    Mixed signal across dimensions; warrants closer reading.
  • Poor (40+)
    Material gaps in multiple dimensions; specific flags will be visible on the issuer profile.
  • Very Poor (<40)
    Multiple material gaps; recommend reading the underlying disclosure flags directly.

Editorial guardrails

  • Per the IR Memos load-bearing rule, NZXplorer scores (including GRS) are prompt INPUTS to AI-generated memo content, never cited OUTPUTS in memo prose. The score appears in clearly-labelled internal-review sidebars only.
  • The GRS does not flag individual directors. It is an issuer-level composite. Director-level concerns surface separately through the underlying tables (board independence, tenure flag, etc.).
  • Banding language in user-facing copy must use the descriptive labels above, never raw numerical comparisons that imply ranking (avoid “the worst NZX-listed issuer for governance” framing).

Limitations

These are the known limits of the methodology. We disclose them publicly so readers can weigh the observation in context, and so that any qualified-privilege defence under the Defamation Act 1992 §16(2) rests on demonstrably fair and accurate reporting.

  • Peer-relative scoring means a low GRS in a strong-cohort year does not necessarily mean weak absolute governance; conversely a high GRS in a weak-cohort year is no guarantee.
  • Governance disclosures lag actual practice. A board change made in March may not surface until the annual report in October.
  • The five-dimension framework reflects our editorial judgement on what matters; alternative governance frameworks (ICGN, ASX-aligned, etc.) would produce different rankings.
  • Some dimensions rely on extracted data (board independence often requires reading a director bio); extraction errors propagate into the score.
  • New listings have limited history and are scored conservatively; long-tenured issuers have richer data and can score either higher or lower.
  • The GRS is not a credit rating, an investment recommendation, or a fitness-for-purpose assessment. It is a comparative governance-disclosure signal.

Right of reply

Anyone named in connection with this label has a right of reply via the public dispute & right-of-reply form. Submissions go to our editorial review queue with a 5-business-day response target. We will publish your contextual statement alongside the data point or label it addresses. See Data Principles for the full corrections + removal policy.

Source confidence: DLast reviewed: 5 May 2026