Bridgewater's flagship macro fund gains 8% in first half as AI strategy matches pace

Bridgewater Associates’ Pure Alpha fund, the firm’s flagship macro strategy, returned 8.1% in the first half of 2026. That’s a solid result by any measure, though it’s a step down from the blistering 17% the fund posted in the first half of 2025.

What makes this round of results particularly interesting isn’t just Pure Alpha’s performance. It’s that Bridgewater’s newer AI-driven fund, AIA Macro, delivered the exact same 8.1% return over the same period.

The numbers behind the numbers

Pure Alpha’s 8.1% gain came during a period of significant market volatility tied to the Iran war. For context, the S&P 500 rose 9.67% over the same period. The Nasdaq Composite climbed 12.48%.

The AIA Macro fund manages approximately $4.5 billion in assets. Since its launch in late 2023, it has delivered an 11.3% annualized return.