The UK’s relatively minor tech weighting has often insulated it from AI-led volatility. But when the sector’s momentum returns, FTSE 100 names such as Sage, Experian and London Stock Exchange Group tend to lead the charge.

A more recent addition to the index, Computacenter (LSE:CCC), has become a go-to proxy for enterprise AI infrastructure spend. With fresh results on the horizon, I decided to see what may lie ahead.

Strong results, high valuation

The company distributes and integrates IT kits for hyperscalers and large customers building out data centres to power AI workloads. That positioning has paid off. The stock’s up more than 130% over the past year, recently touching a fresh 52-week high above 5,600p in late August.

Half-year results are due on 8 September, and brokers are already flagging underestimated first-half earnings strength and higher FY27 spend expectations.

Peel Hunt recently upgraded Computacenter to Buy from Add and lifted its price target to 6,000p from 4,400p, citing “more to come” from the AI build-out. The broker increased its FY27 adjusted EBIT forecast by 10% to £394m versus consensus of £364m.

But valuation is already stretched. Computacenter now trades on a forward price-to-earnings (P/E) ratio of almost 23.8, well above its five-year average of 15. Some sources put the trailing P/E as high as 36.

That raises a key question for investors: can the AI capex cycle sustain these multiples, or is expectation risk now too high?

Risks to watch

Tech is an inherently risky sector, and Computacenter’s no exception. It faces stiff competition from other IT services firms for hyperscaler contracts, and its margins are at constant threat from supply chain bottlenecks or shifts in customer procurement.

It’s also exposed to sector-specific spending cycles, particularly in North America where operating profit nearly doubled in 2025 on AI infrastructure investment.

Wider AI market risks matter too. If hyperscaler spending normalises or AI adoption slows, demand for data centre kit could soften.

Geopolitical tensions, export controls on advanced chips, or a broader tech correction would all weigh on sentiment. Given Computacenter’s heavy reliance on AI-linked capex, any slowdown in the build-out would likely hit the stock harder than the wider FTSE 100.

Bottom line

Computacenter offers a rare, direct route into the AI infrastructure theme on the FTSE 100. The bull case is clear: strong order books, double-digit profit growth, and brokers expecting materially higher FY27 spend.

But the valuation’s no longer cheap, and much of the good news may already be priced in.

For long-term investors comfortable with tech volatility, considering a small position could make sense ahead of the 8 September update. But anyone buying now should be prepared for a bumpy ride if guidance or AI spending signals disappoint.

The real test is whether the AI capex cycle can justify today’s price.

The 8 September results could be a make-or-break moment. If management confirms strong FY27 visibility and raises guidance, the rally may have further to run. But any hint of slowing demand or margin pressure could trigger a sharp pullback.

To mitigate risks, investors should also consider diversification. Putting all your capital into one AI proxy carries concentration risk. A balanced approach might pair Computacenter with other FTSE 100 names, and there’s one in particular I’ve had my eye on lately…

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Mark Hartley owns shares in Experian.

The post This FTSE 100 AI giant just hit a record high so what could the 8 September results bring? appeared first on The Twelfth Magpie.

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