Legal & Regulatory Financial services

Every model on the list, every one signed off.

High-risk AI obligations were approaching and nobody at Halden & Co. could list every model in production. We built the inventory, the classification and a governance framework owned by the CRO.

Client: Halden & Co. Duration: 8 months Year: 2023
The challenge

A new law, no inventory.

Halden & Co. lends to households and small businesses in four Nordic markets. Credit decisions relied on statistical and machine-learning models built by different teams over a decade, and no one could say how many were in production.

  • 27models found in production
  • 9used in credit decisions
  • 0with complete documentation

Credit scoring is one of the high-risk uses named in the EU AI Act, and Halden’s supervisor had announced a thematic review of model governance. Data science, risk and IT each owned part of the picture, but no one owned the whole.

The chief risk officer asked for a framework that would satisfy the supervisor and that her own team could keep running after we left.

Our solution

Find, classify, then govern.

Our legal and regulatory team worked with Halden's CRO, data science leads and internal audit, with monthly updates to the board risk committee.

  1. 01

    Build the inventory

    We interviewed 31 model owners and traced every automated decision back to the model behind it, finding 27 in production.

  2. 02

    Classify the risk

    We assessed each model against the Act and confirmed nine credit-decision models as high-risk, with gaps listed for each.

  3. 03

    Hand over the framework

    We wrote the governance policy, documentation templates and sign-off process, and trained the CRO's team to run them.

The results

At the first thematic review.

Outcomes as recorded in the supervisor's review feedback and Halden's board risk committee minutes.

9 Models signed off

Classified, documented and approved by the CRO.

27 Models inventoried

Each with a named owner and risk rating.

0 Supervisory findings

Documentation accepted at the first thematic review.

6 wk To spare

Before the internal deadline set by the board.

“Nine credit models, one deadline and a supervisor watching. Corwell had every model documented and signed off with weeks to spare, and left my team able to do it alone. We went into the review with real confidence.”
Sarah Lindqvist Chief Risk Officer, Halden & Co.