Global markets shifted into a defensive stance on Friday, as investors began questioning whether the massive sums being poured into artificial intelligence will ever translate into profits. Asian technology stocks led the decline, while government bonds rallied and Japan's yen strengthened—a classic sign that risk appetite is fading.
The move reflects what traders call a "risk-off" day: when confidence in future growth wobbles, investors tend to trim holdings in expensive growth stocks and move money into assets that are seen as safer, such as government bonds and currencies like the yen.
Why the sudden caution?
The trigger appears to be a growing debate over the returns on AI capital spending. Tech giants and startups alike have been spending billions on data centers, chips, and infrastructure, betting that AI will reshape industries and generate huge profits down the road. But as those bills mount, some investors are asking whether the payoff will arrive soon enough—or at all.
This is a familiar pattern in markets. When a technology narrative is running hot, valuations can stretch far beyond what current earnings justify. The logic is that future cash flows will eventually make up for today's high prices. But if that future starts to look less certain, the stocks that relied on it can fall quickly.
According to Reuters, government bonds were on track for their biggest monthly gain in nearly three years. That is a striking move. Bond prices rise when yields fall, and falling yields often signal that investors are worried about growth or inflation—or both. In this case, the bond rally suggests that money is moving out of riskier assets and into the safety of government debt.
The yen's strength adds another layer. In calmer times, investors often borrow money in yen, where interest rates are very low, and use it to buy higher-yielding assets elsewhere. This is known as a "carry trade." When risk appetite fades, those trades get unwound—investors sell the higher-yielding assets and buy back yen to repay their loans. That can push the yen up quickly, as it did on Friday.
What it means for investors
For everyday investors, the key takeaway is that the AI trade—which has been a major driver of stock market gains over the past couple of years—is facing a reality check. The bond market's strong monthly gain is a warning light for stocks that are priced for a long runway of future growth.
High-valuation tech stocks are often the first to suffer when doubts creep in, because so much of their value depends on profits that are expected years from now. A bond rally can actually help valuations by lowering the discount rate used to calculate future cash flows, but when the doubt is about earnings themselves, that support can be overwhelmed.
The stronger yen also has ripple effects. It can squeeze the earnings of Japanese exporters, whose products become more expensive abroad. And it can pressure any investor who borrowed in yen to fund riskier positions. That is why stress often shows up first in higher-beta corners of the market, like Asian tech stocks, and in more fragile emerging-market currencies.
Reuters noted that South Africa's rand weakened as metals prices fell, another sign of risk aversion spreading beyond tech. Meanwhile, oil prices rose after an attack on a tanker in the Strait of Hormuz highlighted supply risks tied to the ongoing US-Israeli conflict with Iran. That adds a geopolitical layer to an already cautious market mood.
What to watch next
Investors will be watching whether the AI spending doubts deepen or fade. A key question is whether companies will start to signal more caution about their capital expenditure plans. If they do, that could hit tech stocks further. If they don't, the market may take it as a sign that the spending is justified.
Also on the radar: the path of bond yields. If the bond rally continues, it could signal that investors are bracing for a slowdown. If yields stabilize, that might ease some of the pressure on growth stocks.
For now, the message from markets is clear: when the future looks less certain, investors want safety. That means bonds, the yen, and other defensive assets are likely to stay in demand until confidence in the AI story is restored.
Related reading: Alphabet's AI spending approach shows how investors are rewarding companies that are careful with their capital. And copper prices easing on AI demand doubts is another sign of the same trend.
