AI Trade Signals Hint the Surprise Second Half Could Rally

Market Backdrop

Stock markets opened July with a cautious shrug and a renewed focus on artificial intelligence as a potential engine of reacceleration. Through the end of June, the S&P 500 hovered near 4,600, up about 12% year to date, while the Nasdaq Composite posted a similar pace of gains amid a broadening rally in tech and AI names. Traders say macro factors — rate expectations, inflation readings, and growth signals — remain the primary drivers, but a subset of investors is eyeing a rerating in AI stocks if earnings and policy signals align.

New liquidity conditions and shifting sentiment have given AI names a fresh lease on life. The AI subindexes have outperformed the broader market for stretches, and investors have poured capital into AI-themed exchange-traded funds at a pace not seen since last year’s hype cycle cooled. In June alone, AI-focused vehicles attracted notable inflows as traders wagered that valuations could catch up with the pace of innovation in automation, chips, and software platforms.

Analysts caution that the macro picture still contains risks, including rate uncertainty and regulatory scrutiny across major markets. Yet the strategic tilt toward AI growth pockets remains intact for many funds and allocators who emphasize durable franchises, not just flashy headlines.

AI Trade in Focus

Market participants continue to dissect the tape for signs that AI equities have found a sustainable footing. A common thread is improving visibility on how AI-driven earnings translate into cash flow and return on capital, even as multiple compression remains a risk if interest rates do not ease as anticipated.

Key data points shaping the narrative include:

• The Nasdaq AI & Tech Index rose roughly 28% year to date through late June, underscoring a renewed appetite for AI exposure beyond the largest chipmakers.
• AI-focused exchange-traded funds recorded multi-billion inflows in the first half of 2026, signaling broad market participation rather than a narrow cycle bet.
• Forward earnings multiples for a representative AI basket sit in the mid-to-high 20s, closer to pre-pandemic peaks but still shy of the runs seen in previous AI booms, suggesting room for re-rating if growth proves durable.
• Regulatory and security concerns persist, with policymakers weighing data governance and competition issues that could influence the pace of AI deployment across industries.

HSBC strategists have been among the more vocal observers of how sentiment around AI could evolve. In notes disseminated to clients, they stressed that investors should not mistake market skepticism for permanent disinterest. The team argues that the AI trade has not vanished; it simply paused, awaiting clearer catalysts from earnings execution, platform adoption, and policy clarity.

Quotes from market participants reflect a split mindset: many believe AI stocks are entering a zone where fundamentals can catch up with prices, while others worry that the macro fog could delay any meaningful re-rating. Among the questions to watch: will AI margins improve as software and cloud-based AI services gain scale? Can chipmakers sustain the pace of AI-driven demand amid supply-chain volatility? And how will regulatory moves alter the shape of AI investment incentives?

What The Surprise Second Half Could Look Like

The phrase the market has yet to fully embrace looms large: the surprise second half could materialize if AI momentum translates into a broader earnings uplift and a reappraisal of growth stocks. In practical terms, that means stronger guidance from AI-enabled businesses, better absorption of AI as a cost-saving or revenue-driving tool, and a shift in risk premiums that brings stock valuations more in line with actual cash-generating potential.

Analysts identify several plausible pathways for a constructive H2 scenario:

• Improved AI uptake across sectors leads to outsized cash flow expansion in software, cloud, and hardware ecosystems that support AI deployments.
• Earnings surprises broaden beyond a handful of marquee AI leaders to include mid-cap and regional players with scalable AI platforms.
• Monetary policy remains on hold or starts to ease later in the year, reducing discount rates and lifting the present value of long-duration AI growth projects.
• Regulatory clarity reduces overhangs, encouraging more corporate AI investments and healthier mergers, acquisitions, and partnerships in the sector.

HSBC’s latest note emphasizes a cautious but clear thesis: the surprise second half could herald a re-rating rather than a dramatic surge in fundamentals, especially if investors shift from chasing headlines to validating the durability of AI-driven profits. In this view, a modest reweighting toward AI names could unlock measurable gains for patient portfolios.

Risks To Watch

While the thesis is constructive, several obstacles could derail a quick re-rating. The most immediate is rate risk — even with near-term policy pauses, changes to inflation momentum or growth surprises could prompt renewed volatility. Geopolitical dynamics around technology supply chains, export controls, and cross-border data flows also loom large, potentially slowing AI deployment in critical industries such as healthcare, manufacturing, and finance.

Valuation risk remains a talking point. If the AI trade accelerates too quickly and prices get ahead of earnings, a sharper pullback could follow as investors reassess the pace of AI-driven margin expansion. Investors should balance exposure with clear risk controls, including diversification across AI-related software, hardware, and services, as well as hedges against broader market drawdowns.

Investor Takeaways

For those recalibrating portfolios in anticipation of a potential AI-driven lift in the second half, here are practical considerations:

• Favor diversified AI exposures that capture data processing, cloud computing, and AI-enabled software, rather than bets on a single company or gadget.
• Assess free cash flow generation and capital efficiency in AI-adjacent businesses, prioritizing sustainable margins over hype-driven multiples.
• Monitor policy signals and regulatory developments that could affect AI adoption timelines and corporate spending decisions.
• Remain mindful of liquidity factors, including fund inflows into AI ETFs, which can exaggerate near-term moves but may also indicate durable interest if accompanied by earnings strength.

The question for investors is whether the surprise second half could finally translate expectations into tangible gains. If HSBC’s thesis holds, a modest re-rating driven by AI trade momentum could give the market a much-needed push at a time when macro drivers are evolving gradually, not explosively. In other words, the AI narrative might not require a dramatic breakthrough to deliver meaningful upside, just a sustained period of earnings visibility and a calmer financial backdrop.

Key Data At A Glance

• S&P 500 level near 4,600; YTD gain around 12%
• Nasdaq AI & Tech Index up roughly 28% YTD through late June
• AI-focused ETFs attracted multi-billion inflows in H1 2026
• Forward P/E for a representative AI basket in the mid-20s to high-20s
• Regulatory and policy developments could alter AI deployment timelines

As markets navigate the balance between skepticism and opportunity, the possibility that the surprise second half could materialize remains on the radar of active managers and long-term investors alike. The path forward will likely hinge on a mix of earnings clarity, policy signals, and the persistent push of innovation that keeps AI at the center of market discourse.