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Portfolio construction

Model Portfolio Pulse: AI wave meets EM strength

December 01, 2025 - 3 min

October was a mixed month for performance. While Natixis models delivered positive absolute returns (gross and net), performance lagged benchmarks due to headwinds in active equity strategies and regional exposures. At the same time, macro conditions remain supportive, with the US economy showing resilience and the Federal Reserve (the Fed) pivoting toward rate cuts. Against this backdrop, we’ve made tactical adjustments to position for opportunity while managing risk in an environment shaped by AI-driven growth, shifting global dynamics, and evolving inflation trends.

Key takeaways

  • Active equity strategies underperformed benchmarks.
  • Macro backdrop remains constructive, supported by Fed rate cuts, AI investment, and easing trade tensions.
  • Seasonal tailwinds and earnings momentum favor equities, but bubble-like behavior in artificial intelligence (AI) warrants caution.
  • Portfolio positioning reflects balanced optimism, with an overweight in equities (US and emerging market [EM]), growth tilt, and neutral duration in bonds.

Active strategies face headwinds

October delivered positive absolute returns across our models on both a gross and net basis. However, gross performance trailed our benchmarks, largely due to underperformance in our active equity mutual funds. This continues a year-to-date trend that reflects the broader challenges facing active equity managers in 2025.

On the exchange-traded fund (ETF) side, our exposure to FXI, a Chinese large-cap equity ETF, weighed on results. FXI lagged the broader emerging markets benchmark, which benefited from strong showings in South Korea and Taiwan. In response, we exited FXI late in the month and reallocated to a broad emerging market ETF, aligning with our evolving view on regional dynamics.

Meanwhile, our asset allocation decisions added value: An overweight to EM equities and an underweight to investment grade fixed income proved beneficial.

Economic resilience amid transition

The US economy remains resilient, buoyed by AI-driven capital expenditures and a consumer base that continues to spend despite a cooling labor market. With financial conditions already loose and the Fed cutting interest rates, we expect continued support for both economic growth and financial markets.

A truce with China has shifted attention away from trade tensions and toward the stimulative potential of the One Big Beautiful Bill, expected to take effect next year. These developments are likely to bolster business confidence and growth.

That said, risks remain, particularly around the slowing labor market, where a deterioration in employment could threaten consumption. Fortunately, while hiring has decelerated, layoffs haven’t increased sharply yet. Plus, slowing wage growth and now declining shelter inflation may help contain broader inflation pressures, reinforcing the Fed’s dovish stance.

Seasonal strength meets AI caution

Seasonal trends are supportive of equities through year-end, and with earnings expectations rising and interest rates falling, we anticipate markets will grind higher. However, the AI sector is showing bubble-like behavior, and any slowdown in AI investment could trigger market disappointment. Encouragingly, Q3 earnings have so far supported continued momentum in this space.

Natixis model portfolio positioning

Our models reflect a modestly bullish stance, with several key themes:

  • Overweight stocks vs. bonds
  • Growth over value tilt
  • Overweight EM stocks
  • Slightly overweight US stocks
  • Slightly underweight developed international stocks
  • Overweight EM USD-denominated government bonds
  • Neutral duration positioning

We recognize the tug-of-war between rich valuations and supportive monetary policy. While we’re not forecasting a recession, we remain somewhat cautious given the extended rally since April. A correction, if it comes, could be sharp, hence our measured equity overweight.

Recent changes include a slight addition to overall portfolio risk via equity ETF purchases, plus exits from US minimum volatility, Indian stocks, and Chinese stocks.

All investing involves risk, including the risk of loss. Investment risk exists with equity, fixed income, and alternative investments. There is no assurance that any investment will meet its performance objectives or that losses will be avoided. Investors should fully understand the risks associated with any investment prior to investing.

Diversification does not guarantee a profit or protect against a loss.

This material is provided for informational purposes only and should not be construed as investment advice. The views and opinions contained herein reflect the subjective judgments and assumptions of the authors only and do not necessarily reflect the views of Natixis Investment Managers or any of its affiliates. The views and opinions expressed may change based on market and other conditions. There can be no assurance that developments will transpire as forecasted, and actual results may vary.

A bullish outlook is the belief that the broad market or a specific security is likely to rise in value.

CFA® and Chartered Financial Analyst® are registered trademarks owned by the CFA Institute.

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