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BofA: Materials Sector Poised to Benefit from AI, Defense, Housing

Bank of America believes the materials sector, despite its small weighting in the S&P 500, could emerge as a key beneficiary of rising AI investment, defense spending, and housing demand, as stated by chief strategist Michael Hartnett.

May 9, 2026
2 min read
Source: InvestorsHub
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Key Numbers

sector weight
2%
analyst
Michael Hartnett

Bank of America believes the materials sector could emerge as one of the next major beneficiaries of several powerful global trends, despite currently representing only around 2% of the S&P 500's total market value, close to its smallest weighting in three decades.

According to BofA chief strategist Michael Hartnett, the sector is "set to join new bulls on the block," supported by rising geopolitical competition for natural resources, rapidly expanding artificial intelligence investment, higher defense spending, and housing demand.

Analyst's Rationale

Hartnett sees the materials sector as uniquely positioned to capitalize on these trends:

  • Geopolitical resource competition: Increasing rivalry among major powers to secure critical raw materials boosts demand.
  • AI investment: The expansion of AI infrastructure requires large quantities of materials such as copper and rare earth metals.
  • Defense spending: Rising military budgets globally increase demand for materials used in defense manufacturing.
  • Housing demand: Housing shortages in many markets support demand for construction materials.

Context

The analysis comes at a time when the materials sector has shown mixed performance, hampered by weak Chinese demand and a slowing global economy. However, Hartnett believes the structural factors mentioned could change the sector's trajectory over the long term.

What This Means for Investors

BofA's analysis offers a bullish long-term view on the materials sector, but investors should consider risks related to cyclical volatility and geopolitical tensions. Investment decisions depend on individual risk tolerance and time horizon.

Frequently Asked Questions

The materials sector represents about 2% of the S&P 500's total market value, near its lowest weighting in three decades.

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This article was rewritten in Wrqti's editorial style based on information from the original source above. Content is informational only — not investment advice.