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The capital spending ambitions tied to the AI buildout are so large that the micro is macro. The overall revenues could justify the spend – yet it’s unclear how much will accrue to the tech companies driving the buildout. We stay pro-risk and overweight U.S. stocks on the AI theme. We also see this as a great time for active investing.
The AI builders are leveraging up: investment is front-loaded while revenues are back-loaded. Along with highly indebted governments, this creates a more levered financial system vulnerable to shocks like bond yield spikes. We see private credit and infrastructure supporting this financing and are tactically underweight long-term U.S. Treasuries.
With a few mega forces driving markets, allocations made under the guise of diversification could be big active bets. We think investors should focus less on spreading risk indiscriminately and more on owning it deliberately. We think portfolios must be nimble, with a clear plan B. We like idiosyncratic exposures in private markets and hedge funds.
The global economy and financial markets are being transformed by mega forces, especially AI. Technology is becoming capital-intensive, and the AI buildout could be unprecedented in both speed and scale. With a few mega forces driving markets, it is hard to avoid making a big call on their direction – and as such, there is no neutral stance, not even exposure to broad indexes.
AI’s buildout is also happening at a potentially unprecedented speed and scale. This shift to capital-intensive growth from capital-light, is profoundly changing the investment environment – and pushing limits on multiple fronts, physical, financial and socio-political.
In recent months, investors have started to fret about equity valuations and whether an AI bubble is forming. Market bubbles have arisen in all major historical transformations – and that could happen again. But those bubbles also grew for some time and only became obvious after they burst. That’s why we seek to reconcile the potential orders of magnitude of investment and returns. That’s our basis for tracking the AI transformation and is what this Outlook aims to do.
We remain pro-risk and see the AI theme still the main driver of U.S. equities. Yet this environment is ripe for active investing – picking winners and losers from among the builders now and later as AI gains start to spread, in our view.
The challenge for investors is reconciling the huge capital spending plans with their potential AI revenues. Will their orders of magnitude match? This is not a given. The answer depends on whether U.S. growth can break out from its long-term 2% trend. This is a tall order, but AI makes it conceivable for the first time.
The AI buildout requires front-loaded investment for compute, data centers and energy infrastructure. But the eventual revenue from that investment comes later. The gap in time between capex and eventual revenues means AI builders have started using debt to get over a financing “hump.” This frontloading of spending is necessary to realize eventual gains. All this creates a very different investment environment, in our view. Among its core features: higher leverage across the system with a ramp-up in credit issuance across public and private markets.
This investment environment has some core features: higher leverage, a higher cost of capital, concentrated gains for now, more room for alpha and the need for big calls.
A rapid transformation
Length and capital deepening of notable innovations, 1760-2040
Forward-looking estimates may not come to pass. Source: BlackRock Investment Institute with data from Crafts (2021), December 2025. Notes: The chart shows the average annual contribution of capital spending to GDP growth for previous U.S. technologies (except “steam,” for the UK) against the length of time the capital was spent. Estimates for steam, electricity and ICT are taken from Crafts (2021). The spend needed for artificial intelligence (AI) is calculated using realized capital spending between 2022-2024, the upper end of the U.S.$5-8 trillion range of total capital spending intentions spanning the period 2025-2030, and an assumption that capex intensity continues at a similar rate through 2030-2040.
We see AI capital spending still supporting growth in 2026, with the contribution to U.S. growth from investment totalling three times its historical average this year. This capital-intensive boost is likely to persist into next year, allowing growth to hold up even as the labor market keeps cooling. But will it be enough to break U.S. growth out from its long-term 2% trend? All major innovations of the last 150 years – including steam, electricity and the digital revolution – were not enough for it to break out of this trend.
Yet, it is conceivable for the first time. Why? AI is not only an innovation itself but has the potential to accelerate other innovation. Beyond automating tasks, it would need to learn from itself and improve, in turn, accelerating idea creation and scientific breakthroughs. While conceivable, we don’t know if it will happen. We track evidence that can serve as a leading indicator of faster innovation – for example, a surge in the number of new patents each year – before any benefits start to show up in broader activity data.
Never broken out
U.S. GDP per capita and long-term trend, 1870-2024
Source: BlackRock Investment Institute and Macrohistory Database, December 2025. Note: Historical data compiled by Òscar Jordà, Moritz Schularick, and Alan M. Taylor. 2017. Macrofinancial History and the New Business Cycle Facts. in NBER Macroeconomics Annual 2016, volume 31, edited by Martin Eichenbaum and Jonathan A. Parker. Chicago: University of Chicago Press.
The AI buildout is dominated by a handful of companies whose spending is so large that it has a macro impact. Taking a view on these companies requires assessing whether the macro math adds up.
As AI becomes embedded in the economy, we expect it to create entirely new pools of revenue in the tech sector and beyond. Where exactly? it’s highly uncertain. But we can still try to gauge the macro size. If AI delivers a 1.5% boost to growth through productivity gains, we estimate that this would expand economy-wide revenues by $1.1 trillion. How this pays off for the tech sector depends on what share of these new revenues they capture. The value chain will cut across sectors and depend on how other sectors monetize their intellectual property with AI. For now, tech companies will grow revenues by taking market share.
We stay risk-on and overweight U.S. stocks on the AI theme but see it becoming an active investment story of identifying new winners as AI revenues spread across the economy.
Doing the math
Estimates of annual U.S. corporate revenue growth through 2030
Forward-looking estimates may not come to pass. Source: BlackRock Investment Institute and Bloomberg, December 2025. Notes: The left bar shows the necessary incremental revenues to be achieved through 2030 (from 2025) to reach a 9-12% lifetime internal rate of return. This is based on data center deployment estimates (GW terms) and capex per GW assumptions reflecting cost inflation, GPU life, phasing and hyperscaler market share. We cross-referenced with other sources including McKinsey, BCG, Berkeley Lab, IEA, U.S. Department of Energy, BloombergNEF, Schneider Electric, EPRI and JLL. These computations include retail revenues growth (Amazon) and other non-data center revenues, which are not driven by BII analysis and are simply the latest Bloomberg consensus estimates. The right bar shows the Bloomberg consensus for the increase in annual revenues over 2025-2030 for U.S. hyperscalers.
Bridging the AI buildout’s financing hump between front-loaded investment and back-loaded revenues needs long-term financing. That means greater overall leverage in the system is inevitable. This has already started with the AI buildout being increasingly debt funded, as seen from recent bond sales from large tech firms.
The good news: the starting point for private sector leverage is healthy, particularly listed tech. Yet the financing needs tied to AI capex far exceed what even the largest firms can meet internally. That’s why we expect companies to keep tapping public and private credit markets. But the ramp-up in private sector leverage comes against a backdrop of already highly leveraged public sector balance sheets. One risk: a structurally higher cost of capital raises the cost of AI-related investment with spillovers to the broader economy. A more leveraged system could create vulnerabilities to shocks. Indebted governments will have less capacity to cushion such shocks. This is where AI financing needs and government debt constraints intersect.
For this reason, we go tactically underweight long-term Treasuries as we see investors demanding more term premium.
Debt divergence
U.S. government and corporate debt, 1950-2025
Source: BlackRock Investment Institute, Congressional Budget Office, Bureau of Economic Analysis, Federal Reserve Board, with data from Haver Analytics and LSEG Datastream, December 2025. Notes: The chart shows U.S. federal debt as a share of nominal GDP, and debt of U.S. nonfinancial corporations as a share of pre-tax profits.
Portfolio decisions taken under the guise of “diversifying” away from the handful of forces driving markets is now a bigger active call. Our analysis shows that after accounting for common drivers of equity returns, like value and momentum, an ever larger share of U.S. equity returns reflects a single, common driver. See the chart. Markets are more concentrated, with less breadth.
Attempts to diversify away from the U.S. or AI - toward other regions or equal-weighted indexes, for example – amount to larger active calls than before. They have left portfolios less exposed to this year’s dominant driver of returns – a driver we have conviction in. The equal-weighted S&P 500 is up just 3% this year versus 11% for the market cap-weighted S&P, LSEG data show. We don’t think this can be viewed as indiscriminately spreading out bets for diversification. They should be recognized as big active calls that need to be made with conviction. Moreover, if the AI theme stumbles, the impact will likely dwarf any seeming diversification away from it.
This environment calls for seeking truly idiosyncratic return sources, such as private markets and hedge funds, and staying tactical.
A powerful common driver
Variance in S&P 500 returns explained by a dominant underlying factor
The figure shown relates to past performance. Past performance is not a reliable indicator of current or future results. Index performance returns do not reflect any management fees, transaction costs or expenses. Indices are unmanaged and one cannot invest directly in an index. Source: BlackRock Investment Institute, with data from Bloomberg, December 2025. Note: The line shows the variance of daily S&P 500 stock returns explained by a common driver after accounting for factors like stock value, size and momentum. This was calculated using first principal component (PC1) of a principal component analysis (PCA) over a rolling 252-day window. PC1 attempts to determine the common driver in a set of numbers that change often – like stock returns for example.
Traditional diversifiers are also faltering. Long-term Treasuries no longer offer the portfolio ballast they once did as high debt keeps yields elevated. Diversification now means having conviction in distinct return drivers - whether in hedge funds, private markets or gold - rather than relying on past correlations.
We think investors should focus less on spreading risk indiscriminately and more on owning it more deliberately. We lean into AI beneficiaries – but retain a tactical approach. We monitor signposts for how the AI transformation is unfolding.
We stay overweight U.S. stocks on the broadening AI theme, with risk appetite supported by Fed rate cuts. The AI theme has broadened out this year, benefiting a wider array of markets including China, Taiwan and South Korea. Europe’s lagging earnings growth relative to the U.S. keeps us neutral its stocks, but we prefer sectors such as financials and industrials.
Our highest conviction views on six- to 12-month (tactical) and over five-year (strategic) horizons, December 2025
| Reasons | ||
|---|---|---|
| Tactical | ||
| Still favor AI | We see the AI theme supported by strong earnings, resilient profit margins and healthy balance sheets at large listed tech companies. Continued Fed easing into 2026 and reduced policy uncertainty underpin our overweight to U.S. equities. | |
| Select international exposures | We like Japanese equities on strong nominal growth and corporate governance reforms. We stay selective in European equities, favoring financials, utilities and healthcare. In fixed income, we prefer EM due to improved economic resilience and disciplined fiscal and monetary policy. | |
| Evolving diversifiers | We suggest looking for a “plan B” portfolio hedge as long-dated U.S. Treasuries no longer provide portfolio ballast – and to mind potential sentiment shifts. We like gold as a tactical play with idiosyncratic drivers but don’t see it as a long-term portfolio hedge. | |
| Strategic | ||
| Portfolio construction | We favor a scenario-based approach as we learn more about AI winners and losers. We lean on private markets and hedge funds for idiosyncratic return and to anchor portfolios in mega forces. | |
| Infrastructure equity and private credit | We find infrastructure equity valuations attractive and mega forces underpinning structural demand. We still like private credit but see dispersion ahead – highlighting the importance of manager selection. | |
| Beyond market-cap benchmarks | We get granular in public markets. We favor DM government bonds outside the U.S. Within equities, we favor EM over DM yet get selective in both. In EM, we like India which sits at the intersection of mega forces. In DM, we like Japan as mild inflation and corporate reforms brighten the outlook. | |
Note: Views are from a U.S. dollar perspective, December 2025. This material represents an assessment of the market environment at a specific time and is not intended to be a forecast of future events or a guarantee of future results. This information should not be relied upon by the reader as research or investment advice regarding any particular funds, strategy or security.
Six- to 12-month tactical views on selected assets vs. broad global asset classes by level of conviction, December 2025

We have lengthened our tactical investment horizon back to six to 12 months. The table below reflects this and, importantly, leaves aside the opportunity for alpha, or the potential to generate above-benchmark returns – especially at a time of heightened volatility.
| Asset | Tactical view | Commentary | ||||
|---|---|---|---|---|---|---|
| Equities | ||||||
| United States | We are overweight. Strong corporate earnings, driven in part by the AI theme, are supported by a favorable macro backdrop: continued Federal Reserve easing, broad economic optimism and less policy uncertainty, particularly on the trade front. | |||||
| Europe | We are neutral. We would need to see more business-friendly policy and deeper capital markets for recent outperformance to continue and to justify a broad overweight. We stay selective, favoring financials, utilities and healthcare. | |||||
| UK | We are neutral. Valuations remain attractive relative to the U.S., but we see few near-term catalysts to trigger a shift. | |||||
| Japan | We are overweight. Strong nominal GDP, healthy corporate capex and governance reforms – such as the decline of cross-shareholdings – all support equities. | |||||
| Emerging markets (EM) | We are neutral. Economic resilience has improved, yet selectivity is key. We see opportunities across EM linked to AI and the energy transition and see the rewiring of supply chains benefiting countries like Mexico, Brazil and Vietnam. | |||||
| China | We are neutral. Trade relations with the U.S. have steadied, but property stress and an aging population still constrain the macro outlook. Relatively resilient activity limits near-term policy urgency. We like sectors like AI, automation and power generation. We still favor China tech within our neutral view. | |||||
| Fixed income | ||||||
| Short U.S. Treasuries | We are neutral. We see other assets offering more compelling returns as short-end yields have fallen alongside the U.S. policy rate. | |||||
| Long U.S. Treasuries | We are underweight. We see high debt servicing costs and price-sensitive domestic buyers pushing up on term premium. Yet we see risks to this view: lower inflation and better tax revenues could push down yields near term. | |||||
| Global inflation-linked bonds | We are neutral. We think inflation will settle above pre-pandemic levels, but markets may not price this in the near-term as growth cools. | |||||
| Euro area government bonds | We are neutral. We agree with market forecasts of ECB policy and think prices reflect the risk that German fiscal issuance raises yields. We prefer government bonds outside Germany. | |||||
| UK gilts | We are neutral. The recent budget aims to shore up market confidence through fiscal consolidation. But most borrowing cuts won’t go into effect for several years, leaving room for domestic pressures to hinder execution and fuel volatility. | |||||
| Japanese government bonds | We are underweight. Rate hikes, higher global term premium and heavy bond issuance will likely drive yields up further. | |||||
| China government bonds | We are neutral. China bonds offer stability and diversification but developed market yields are higher and investor sentiment shifting towards equities limits upside. | |||||
| U.S. agency MBS | We are overweight. Agency MBS offer higher income than Treasuries with similar risk, and may offer more diversification amid fiscal and inflationary pressures. | |||||
| Short-term IG credit | We are neutral. Corporate strength means spreads are low, but they could widen if issuance increases and investors rotate into U.S. Treasuries as the Fed cuts. | |||||
| Long-term IG credit | We are underweight. We prefer short-term bonds less exposed to interest rate risk over long-term bonds. | |||||
| Global high yield | We are neutral. High yield offers more attractive carry in an environment where growth is holding up – but we think dispersion between higher and weaker issuers will increase. | |||||
| Asia credit | We are neutral. Overall yields are attractive and fundamentals are solid, but spreads are tight. | |||||
| Emerging hard currency | We are overweight. A weaker U.S. dollar, lower U.S. rates and effective EM fiscal and monetary policy have improved economic resilience. We prefer high yield bonds. | |||||
| Emerging local currency | We are neutral. A weaker U.S. dollar has boosted local currency EM debt, but it’s unclear if this weakening will persist. | |||||
Past performance is not a reliable indicator of current or future results. It is not possible to invest directly in an index. Note: Views are from a U.S. dollar perspective. This material represents an assessment of the market environment at a specific time and is not intended to be a forecast or guarantee of future results. This information should not be relied upon as investment advice regarding any particular fund, strategy or security.
Six to 12-month tactical views on selected assets vs. broad global asset classes by level of conviction, December 2025

We have lengthened our tactical investment horizon back to six to 12 months. The table below reflects this and, importantly, leaves aside the opportunity for alpha, or the potential to generate above-benchmark returns – especially at a time of heightened volatility.
| Asset | Tactical view | Commentary | ||
|---|---|---|---|---|
| Equities | ||||
| Europe ex UK | We are neutral. We would need to see more business-friendly policy and deeper capital markets for recent outperformance to continue and to justify a broad overweight. We stay selective, favoring financials, utilities and healthcare. | |||
| Germany | We are neutral. Increased spending on defense and infrastructure could boost the corporate sector. But valuations rose significantly in 2025 and 2026 earnings revisions for other countries are outpacing Germany. | |||
| France | We are neutral. Political uncertainty could continue to drag corporate earnings behind peer markets. Yet some major French firms are shielded from domestic weakness, as foreign activity accounts for most of their revenues and operations. | |||
| Italy | We are neutral. Valuations are supportive relative to peers. Yet we think the growth and earnings outperformance that characterized 2022-2023 is unlikely to persist as fiscal consolidation continues and the impact of prior stimulus peters out. | |||
| Spain | We are overweight. Valuations and earnings growth are supportive relative to peers. Financials, utilities and infrastructure stocks stand to gain from a strong economic backdrop and advancements in AI. High exposure to fast-growing areas like emerging markets is also supportive. | |||
| Netherlands | We are neutral. Technology and semiconductors feature heavily in the Dutch stock market, but that’s offset by other sectors seeing less favorable valuations and a weaker earnings outlook than European peers. | |||
| Switzerland | We are neutral. Valuations have improved, but the earnings outlook is weaker than other European markets. If global risk appetite stays strong, the index’s tilt to stable, less volatile sectors may weigh on performance. | |||
| UK | We are neutral. Valuations remain attractive relative to the U.S., but we see few near-term catalysts to trigger a shift. | |||
| Fixed income | ||||
| Euro area government bonds | We are neutral. We agree with market forecasts of ECB policy and think current prices largely reflect increased German bond issuance to finance its fiscal stimulus package. We prefer government bonds outside Germany. | |||
| German bunds | We are neutral. Markets have largely priced in fiscal stimulus and bond issuance, and expectations for policy rates align with our view. | |||
| French OATs | We are neutral. Political uncertainty, high budget deficits and slow structural reforms could stoke volatility, but current spreads incorporate these risks and we don’t expect a worsening from here. | |||
| Italian BTPs | We are neutral. Demand from Italian households is strong at current yield levels. Spreads tightened in line with its sovereign credit upgrade, but a persistently high debt-to-GDP levels means they likely won’t tighten further. | |||
| UK gilts | We are neutral. The recent budget aims to shore up market confidence through fiscal consolidation. But deferred borrowing cuts could bring back gilt market volatility. | |||
| Swiss government bonds | We are neutral. We don’t think the Swiss National Bank will slash policy rates to below zero, as markets expect. | |||
| European inflation-protected securities | We are neutral. Our medium-term inflation expectations align with those implied in current market pricing. | |||
| European investment grade | We are neutral. We favor short- to medium-term debt and Europe over the U.S. An intense re-leveraging cycle to support the AI buildout could put upward pressure on U.S. spreads, making Europe relatively more attractive. | |||
| European high yield | We are overweight. Spreads hover near historic lows, but credit losses have been limited in this cycle and better economic growth in 2026 could reduce them further. | |||
Past performance is not a reliable indicator of current or future results. It is not possible to invest directly in an index. Note: Views are from a euro perspective, December 2025. This material represents an assessment of the market environment at a specific time and is not intended to be a forecast or guarantee of future results. This information should not be relied upon as investment advice regarding any particular fund, strategy or security.