The headline AUM number was broadly stable, not a surprise beat. August preliminary AUM was $183.5 billion, up only $0.5 billion from July's $183.0 billion reported previously, so the monthly asset base was essentially flat rather than showing a meaningful acceleration.
| Metric | August 31, 2026 | Comparison / implication |
|---|---|---|
| Total firm AUM | $183.5B (Financial Data) | $183.0B in July; roughly flat month to month |
| Global Value strategy AUM | $40.0B (Preliminary AUM by Strategy) | Approximately $6.0B expected to rebalance in September |
| Expected September rebalancing | ~$6.0B (Press release) | About 3.3% of firm AUM and roughly 15% of Global Value AUM |
| Artisan Funds and Global Funds | $94.5B (Press release) | Balance of $89.0B in separate accounts and other AUM |
The material news is the newly disclosed client loss, not August's AUM. A long-standing sub-advisory client is moving from a single-manager to a multi-manager structure, with Artisan retaining one of three mandates, but the filing says approximately $6 billion will be rebalanced out of Global Value in September. 〔0〕
The asset hit is meaningful, though the revenue hit should be smaller than the headline suggests. The filing explicitly says the anticipated revenue reduction will be less than the corresponding AUM reduction because of the mandate's fee structure. 〔1〕 That softens the earnings impact, but does not eliminate the significance of losing a large portion of a major strategy's assets.
Net read: negative versus the standing expectation. There is no published consensus benchmark for this monthly AUM release; against the recent stable AUM trend, the unexpected forward disclosure of a roughly $6 billion September outflow dominates the otherwise uneventful August result. Artisan will remain involved in the mandate, so this is a partial reduction rather than a full client departure, but the filing resets near-term asset and fee expectations lower.
Read the original 8-K on SEC EDGAR ↗