Acadian Asset Management Inc. (AAMI) Stock Price & How to Invest

Acadian Asset Management (NYSE: AAMI) is the successor to BrightSphere Investment Group, which rebranded and changed its ticker from BSIG to AAMI in early 2025 after divesting six of its seven affiliates to concentrate on a single business: Acadian, a Boston-based systematic investment manager founded in 1980. Acadian runs quantitative strategies across global equities, fixed income, and alternatives, leaning on data science, machine learning, and factor models to exploit market inefficiencies while stripping out human bias. Its client base is overwhelmingly institutional, and roughly 90% of revenue comes from equity strategies, so its fortunes track global equity markets closely.

The investment picture is a high-operating-leverage play on assets under management (AUM) and net flows. AUM reached about $196 billion at the end of Q1 2026 and then a record ~$232.7 billion at June 30, 2026, up about 54% year over year, driven by strong performance and positive net flows (another ~$4.3 billion in Q2). Q2 2026 revenue was about $183 million, up roughly 47%, with record management fees of ~$177 million and economic net income of $1.33 per share against a consensus near $1.02. Because management fees scale with average AUM while the cost base is relatively fixed, rising markets and inflows amplify earnings (adjusted EBITDA and economic net income grew far faster than revenue), but the same leverage cuts both ways in downturns. The stock re-rated sharply higher through 2025 and into 2026, closing at about $92.49 on October 16, 2026, up about 95% year to date and about 102% over one year, so much of the flow momentum is now reflected in the price. Third-quarter results are due October 29, 2026, with consensus near $1.22 of EPS on about $193 million of revenue.

Acadian is concentrated: over 90% of revenue comes from equity strategies, a large share of AUM sits in a handful of top strategies, and roughly 70% of AUM is denominated in non-U.S. currencies, adding FX and market exposure. As a fee-on-AUM business, a market drawdown or a stretch of underperformance in its quant models could reverse flows and compress earnings quickly given the operating leverage. The firm depends heavily on key investment and management personnel, faces industry-wide fee pressure from passive and low-cost competitors, and the shares have roughly doubled over the past year to about $92 (a trailing P/E near 33x), so the valuation already embeds continued strong flows. Insiders have sold some stock during the run, including a roughly $2.2 million sale disclosed in August 2026. Institutional mandates can also leave in large, lumpy blocks, making quarter-to-quarter flows volatile.

3 analysts publish price targets on AAMI, averaging $94.00 against a $92.23 price as of October 2026, or +1.9%. The published targets run from $85.00 to $102.00, a narrow spread, and the ratings split 0 buy, 3 hold, 0 sell. Over the last six months there have been 11 raises and 0 cuts among the published actions. A price target is what an analyst published on a date, not a prediction, and sell-side ratings skew positive across the whole market.

Read the full AAMI forecast and price target for the target table, the recent rating actions by firm, and how the consensus has shifted.

We give no verdict on Acadian Asset Management Inc.. Both cases are real, which is why the question is contested at all, so here is the strongest version of each.

The case for buying. Record AUM and net flows. AUM hit about $196 billion in Q1 2026, up roughly 61% year over year, with positive net flows near $21 billion in the quarter (about 12% of beginning AUM). The most optimistic published target, $102.00, assumes this works close to its best case.

The case against. Acadian is concentrated: over 90% of revenue comes from equity strategies, a large share of AUM sits in a handful of top strategies, and roughly 70% of AUM is denominated in non-U.S. The most pessimistic target, $85.00, is roughly what AAMI is worth if this bites instead.

Read the full bull and bear case on AAMI, including what would have to change to break either one. Walnut is not an investment adviser.

No. Acadian Asset Management Inc. (AAMI) has not split its stock in the last 10 years. That is a statement about the window we check rather than about the company’s entire history, so an older split is possible. It also matters less than it once did: fractional shares mean a high price per share no longer keeps smaller investors out, which removed most of the practical reason to split.

A simple financial snapshot. These are approximations and refresh quarterly; for current figures see Acadian Asset Management Inc.'s investor relations page or your broker.

• Assets under management: ~$232.7B at June 30, 2026 (up ~54% year over year)
• Revenue (TTM): ~$669M (Q2 2026 ~$183M, up ~45-47% year over year)
• Management fees (Q2 2026): ~$177M, a record
• ENI EPS (Q2 2026): ~$1.33 vs ~$1.02 consensus
• Net income (TTM, GAAP): ~$101M; profit margin ~15%
• P/E (trailing / forward): ~33x / ~14.5x
• Market cap: ~$3.3B (stock ~$92.49)
• Dividend yield: ~0.4% ($0.40 a year)

Trailing GAAP earnings understate the run rate after a year of rapid AUM growth, which is why the trailing P/E near 33x sits far above a forward multiple near 14.5x on 2027 consensus EPS of about $6.38. That gap only closes if flows and markets cooperate, and the stock already trades near the three covering analysts' mean target of about $94, with a consensus hold rating. The small dividend means this is a growth-and-flows story, not an income name.

Other names that sit close to AAMI: same theme, named as a direct competitor, or held beside it in the same funds. Each entry says which. Worth a look if you are thinking about diversification within a thesis rather than concentration on one ticker.

There are three common ways to get AAMI exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it, which spreads the position across many companies. Or build it into a focused thematic portfolio, so AAMI sits alongside other stocks that express the same thesis.

Walnut takes the portfolio route. Describe a thesis where AAMI fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.

New to this? Start with how to invest in stocks, see how to analyze a stock with AI, or compare the best AI stock analyzers.

Acadian is a focused quant asset manager whose earnings ride on assets under management, net flows, and fee levels, so the investment picture hinges on flow durability and market direction. After nearly doubling in 2026 to a market value of about $3.3 billion, the stock trades near 14.5x forward earnings, and the next read on flows comes with third-quarter results on October 29, 2026.

Whether AAMI is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is AAMI a buy or a sell?, and where the stock could go from here in the AAMI stock forecast.

For income investors, whether AAMI pays a dividend and how the payout looks is covered in does AAMI pay a dividend? And to weigh AAMI against a peer, read the full side-by-side comparisons: AAMI vs NTRS and AAMI vs STT.