The bank reversed a downgrade issued three weeks earlier, signalling renewed confidence in the sector following a period of heightened investor concern over artificial-intelligence spending, corporate valuations and the sustainability of technology companies’ growth expectations.

In a brokerage note outlined on Friday, Deutsche Bank said the recent decline had gone too far, with a substantial portion of the risks associated with artificial intelligence already reflected in share prices. The reassessment suggests that the bank believes the market reaction has become excessive relative to the longer-term prospects of major technology businesses.

The losses followed growing scrutiny of the capital expenditure commitments made by major technology companies as they expand data centres, develop advanced computing infrastructure and compete to commercialise artificial-intelligence services.

Although the investments have supported expectations of long-term growth, investors have become increasingly concerned about whether the expected financial returns will justify the scale of spending. Questions over the pace of monetisation, operating costs and competitive advantages have contributed to volatility across technology shares.

The Nasdaq 100, which includes many of the largest publicly traded technology and growth companies, has been particularly exposed to changes in expectations surrounding artificial intelligence. Its decline has also raised concerns about the concentration of market gains among a relatively small number of large companies.

Deutsche Bank’s decision to upgrade the sector indicates that it sees scope for a recovery if investors begin to distinguish between companies with sustainable earnings prospects and those whose valuations depend heavily on future growth assumptions.

However, the revised outlook does not remove the risks facing the industry. Technology companies must still demonstrate that substantial investment in artificial intelligence can translate into stronger revenue, improved productivity and durable profitability.

The wider market environment will also remain important. Interest-rate expectations, corporate earnings and changes in investor appetite for growth stocks are likely to influence the direction of technology shares.

For investors, the central question is whether the recent correction has created value or exposed deeper weaknesses in the sector’s growth outlook. Deutsche Bank’s upgrade points towards the former, but a sustained recovery will depend on companies delivering financial results capable of supporting renewed confidence.