Artisan Partners Loses $6B Mandate as Client Shifts to Multi-Manager Structure — Artisan Partners Asset Management Inc.

Event summary

Artisan Partners reported $183.5B in AUM as of August 31, 2026, with $94.5B in Artisan Funds and $89.0B in separate accounts.
A long-standing sub-advisory client is rebalancing $6B from Artisan's Global Value strategy in September 2026.
The revenue impact is expected to be less than the AUM reduction due to the mandate's fee structure.
International Value ($58.2B) and Global Value ($39.96B) are the largest strategies by AUM.

The big picture

The loss of the $6B mandate highlights the growing trend of clients diversifying their investment strategies to mitigate risk. Artisan's ability to manage this transition will be critical as the asset management industry faces increasing pressure to adapt to evolving client preferences. The firm's scale, with $183.5B in AUM, provides some buffer, but the strategic shift could impact its long-term growth trajectory.

What we're watching

Client Retention: How Artisan will mitigate the loss of the $6B mandate and retain other long-standing clients.
Revenue Resilience: Whether the firm can offset the revenue impact through other high-margin strategies.
Strategic Adaptation: The pace at which Artisan can adapt to the shift toward multi-manager structures in the industry.