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US inflation above 4% puts the Fed and AI trade under pressure | CMC Markets | CMC Markets
11 Jun 2026, 13:21
US CPI has risen to 4.2%, putting pressure on the Fed as higher energy costs, bond yields and capital costs challenge AI-led equity valuations.
The 4% inflation risk has materialised
The Polish source warned that US inflation was on course to move above 4% for the first time in three years. That risk has now materialised: the latest Bureau of Labor Statistics release showed May CPI rising 0.5% on a seasonally adjusted monthly basis and 4.2% year on year.
That matters because it changes the tone of the rate debate. Markets had been hoping that inflation would keep drifting lower and eventually give the Fed room to ease policy, but a headline print above 4% makes that story much harder to defend.
Core inflation was more contained, rising 0.2% on the month and 2.9% over the year, but the source’s broader point still stands. Investors are being forced to decide whether the latest energy-driven inflation shock will fade quickly or become embedded in expectations.
Energy and wages are keeping households under pressure
Energy remains the immediate problem. The BLS release showed the energy index rising 3.9% in May, while gasoline rose 7.0% on the month and 40.5% over the past year. The source links that pressure to geopolitical tension around Iran and warns that higher energy costs can shape how households and businesses think about future inflation.
The more uncomfortable part is that wages are not keeping up with the squeeze. The Polish article notes that pay growth is running around 3.0% to 3.5% a year, below the pace of headline inflation. That weakens purchasing power and raises the risk that consumers become more sensitive to every fresh rise in fuel, transport and service costs.
For the Fed, that is a credibility problem as much as a data problem. If consumers start to believe that high inflation is becoming normal again, policy may need to stay restrictive even if parts of core inflation look less alarming.
Warsh faces an early credibility test
Kevin Warsh has only recently taken over as Fed chair, and the source frames this inflation shock as one of his first major tests. Donald Trump may prefer looser monetary policy and lower rates, but the bond market is sending a very different message.
The Polish source points to US two-year Treasury yields around 4.16%, above the current Fed policy rate of 3.75%. In market terms, that gap suggests traders want evidence that the new Fed leadership is willing to push back against inflation rather than lean too quickly toward cuts.
That puts the next Fed communication under a brighter spotlight. If Warsh sounds too relaxed about inflation, bond yields could stay under upward pressure. If he sounds too hawkish, risk assets may have to price a longer period of tight financial conditions.
The AI trade is more exposed to higher capital costs
The source argues that AI-related technology stocks have looked unusually resilient through recent market stress, but that resilience may become harder to sustain if inflation keeps yields elevated. Higher rates raise the cost of capital, and that matters for companies funding large data-centre, chip and infrastructure investment cycles.
That is where the pressure can reach the Nasdaq 100. If funding costs stay high, companies may need to rely more heavily on equity issuance or accept tighter margins on investment-heavy projects. Either outcome would make rich growth-stock valuations harder to justify.
The market has already started to show more caution. The source notes that the Dow Jones gained 0.17% in the latest US session, while the S&P 500 slipped 0.26% and the Nasdaq 100 fell 0.97%, leaving technology shares as the more obvious pressure point.
Risk appetite has not fully broken yet
The inflation story is not yet producing outright capitulation. The source describes investors as cautious rather than panicked, with buyers still reluctant to abandon the chance of another rebound in risk assets.
That may be why the wider market reaction remains uneven. Asian equities moved lower after Wall Street’s weaker tone, while Poland’s market still managed a modest late recovery despite the broader global tension.
The key signal from here is likely to be the US bond market. If yields keep rising, inflation anxiety may spread more deeply into equities. If they stabilise, the market may treat the CPI shock as uncomfortable but still manageable.