Corestar Partners · Behavioural Diagnostics

See clear.
Lead sure.

Is the CEO making the business easier to run, or harder? Corestar measures the difference: evidence, not reputation.

The Corestar CEO Index

One number. Independently derived.

Stabilisation Efficiency (SE) measures a leader’s capacity to reduce friction inside an organisation. It is derived from public signals, adjusted for the environment the leader inherited, and independent of share price and other lag indicators. It answers the question that matters before results can: is this leader making the company fundamentally easier or harder to run?

The FTSE 100 & 250 cohortStabilisation Efficiency · lower is better

Stabilisation Efficiency bands for the FTSE 100 & 250 cohort
Share of cohort	Band	SE range
0%	The Rare Elite	SE below 0.75
0%	The Competent Core	SE 0.75 – 0.92
0%	The Friction Adders	SE 0.93 – 1.15
0%	Insufficient Tenure	Low confidence

Every score is environment-adjusted. A leader handed a troubled operation is judged on the reality they inherited, not against an impossible ideal.

Three questions. One instrument.

For Business Leaders

Will your strategy survive the reality of your culture?

Corestar reveals the behavioural forces shaping your performance, so you can harness your company’s true strength.

Find your true strength

For Executive Search

Is your candidate making their business easier to run, or harder?

One context-adjusted number that separates the leader from the circumstances they inherited.

De-risk the appointment

For Investors & PE

Does the culture add to the price, or subtract from it?

Leadership effect, measured discreetly from public signals. No management access required.

Price the leadership effect

By introduction

Corestar works with a small number of boards, search firms and investors at any one time. If the questions above are your questions, we should talk.

Request an introduction

See clear.Lead sure.