AI shares had an ugly June. The cost of running AI fell faster.

June was rough for the AI trade. The Magnificent Seven — the US tech giants that have carried global markets — shed more than $2tn of value over the month, by market estimates. Nvidia, the clearest single proxy for the boom, is trading near $200 this week, about 15% below its mid-May peak of $236.54. On the surface that reads as doubt creeping into the machine bet.

Look underneath and a more interesting number is moving the other way. The cost of renting the chips that run AI has been falling: one widely-cited figure puts the hourly rate for Nvidia's top B200 processors down roughly 31% between late May and late June. Put the two together and the market is not saying AI won't happen. It is repricing who gets paid for it. When the firm selling the shovels cools while the cost of digging drops, value shifts from the supplier toward whoever uses the compute — the companies that can now automate a task more cheaply than they could a month ago. Goldman Sachs reckons Nvidia and the memory-maker Micron alone will drive around 40% of the S&P 500's earnings growth this quarter, a concentration that cuts both ways: it lifts the index, and it means a wobble in two names drags everyone.

Here is the through-line to the question this paper asks. The biggest brake on machine labour replacing human labour has always been cost — running the models at scale was expensive. Every fall in that cost lowers the price of doing a job with a machine instead of a person. A cooling Nvidia share price is a market story. A falling cost of compute is a labour story wearing a market's clothes.

None of this is abstract for a British saver. Your workplace pension almost certainly holds this whole stack — the chipmakers, the cloud giants, the memory firms — through global tracker and growth funds, and a US-listed trust such as Scottish Mortgage gives many ISA holders direct exposure. So June's fall showed up quietly in a lot of British pensions, even as the UK's own index, which owns very little of this, sat the month out. If understanding what your fund holds was already on your list, a choppy month is a fair prompt to read the fund factsheet — not to do anything, only to know. This is information, not advice; where your money sits is a decision for you, and where it matters, for a regulated adviser.

Why it matters here: The AI trade's June wobble reaches British households mainly through the pension and ISA, where global funds hold the whole AI supply chain. The quieter figure — a falling cost of compute — is the one that bears most directly on the future of work this paper tracks.