---
id: "concept-model-portfolio-governance"
type: "concept"
source_timestamps: ["§ Seven Imperatives for Creating Diverse Agentic Teams"]
tags: ["corporate-governance", "risk-management", "board-of-directors"]
related: ["action-implement-portfolio-governance", "concept-correlated-ai-errors", "entity-enver-cetin"]
definition: "A board-level policy that sets strict concentration limits on the percentage of critical business decisions that can rely on a single AI model vendor."
sources: ["agentic"]
sourceVaultSlug: "hbr-seg-agentic"
originDay: 6
articleStem: "hbr-new-28-agent-teams-different-models"
sourceUrl: "https://hbr.org/2026/06/the-strongest-teams-of-ai-agents-will-be-built-using-different-models"
sourceTitle: "The Strongest Teams of AI Agents Will Be Built Using Different Models"
---
# Model Portfolio Governance

Model portfolio governance is a corporate governance framework — advocated by [[entity-enver-cetin]] — that treats enterprise AI model usage like a **financial portfolio**. It requires boards of directors to set strict **concentration limits** on foundation-model vendors: for instance, mandating that no more than a specified percentage of critical agentic decisions can rely on any single vendor (e.g., OpenAI or Anthropic).

This policy **elevates AI vendor concentration from an IT procurement issue to a board-level systemic-risk-management imperative**, applying the same rigor used for financial diversification or critical-supplier concentration. It is the direct organizational countermeasure to [[concept-correlated-ai-errors]], and is operationalized as [[action-implement-portfolio-governance]] within the [[framework-seven-imperatives]].

**Enrichment validation:** The conceptual framework is consistent with emerging AI-risk and assurance best practice — PwC emphasizes governance frameworks, layered accountability, and continuous monitoring for multi-agent systems; the portfolio-diversification analogy is common in AI-governance commentary. It is **not yet a standardized board practice**, but fits evolving guidance on AI governance and critical-supplier risk.


## Related across articles
- [[concept-lob-ai-ownership]]
- [[action-form-joint-governance]]
- [[concept-digital-labor-governance]]