Affiliated Managers Group has spent three years repositioning itself as a partner of choice for high-growth alternative investment managers, and the second quarter of 2026 produced the cleanest evidence yet that the strategy is now a self-funding flywheel rather than a thesis in motion. Aggregate AUM closed the quarter at $942.4 billion, up $60.4 billion sequentially and $129.1 billion year to date, with the entire gain coming from the two segments that management has been overweighting - private markets and liquid alternatives generated approximately $29 billion of net inflows in the quarter alone, a record, while traditional equity strategies continued to leak assets in line with broader industry outflows. Consolidated revenue rose 30 percent year over year to $640.7 million, adjusted EBITDA at the controlling interest climbed 44 percent to $316.0 million, and economic earnings per share, AMG's preferred non-GAAP measure, increased 54 percent to $8.29. The market has begun to re-rate the story: AMG's market capitalization of roughly $5.4 billion as of mid-February 2026 was effectively unchanged in absolute terms, but enterprise value has compressed against an equity-method investment base that has expanded to $2.94 billion and earnings power that has nearly doubled, leaving the stock on a forward economic P/E in the high single digits against a peer set that trades closer to mid-teens. The trade is straightforward - AMG is in the middle innings of a multi-year shift from a long-only-dominated earnings mix to an alternatives-dominated one, the cash generation is accelerating, and the buyback yield plus selective Affiliate reinvestment is creating a flywheel the market has not yet fully priced.