Nextdc Ltd (ASX: NXT) shares are under pressure despite the data centre operator securing $1.1 billion in fresh funding. The stock fell 3% to $12.41 during Thursday morning trading, taking its monthly decline to around 14% and its 12-month loss to roughly 25%.
The paradox is striking. NEXTDC is raising billions to capitalise on booming AI demand, yet investors appear increasingly concerned about how much it will cost to turn that demand into profits.
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AI opportunity comes with a huge bill
The funding solves one problem, but highlights another.
NEXTDC is seeing customers reserve enormous amounts of data centre capacity well before the infrastructure is ready to generate revenue. At the end of FY26, contracted utilisation had reached 740.1MW, but only 175MW was already billing.
That leaves a substantial gap between capacity customers have committed to and infrastructure actually generating revenue.
Earlier this year, NEXTDC estimated its existing contracted utilisation could eventually generate more than $1 billion of EBITDA once delivered, without assuming any additional customer wins.
That sounds compelling. The catch is that delivering all that capacity requires an extraordinary amount of capital.
NEXTDC has been tapping equity, debt, and hybrid funding to accelerate construction, while its major developments require access to land, power, equipment, and skilled workers.
That makes execution critical for NEXTDC shares. Any delays, cost overruns, financing pressures, or slowdown in AI infrastructure spending could reduce the returns investors ultimately receive.
There can also be a lengthy lag between signing a customer and bringing new capacity online and generating revenue.
Investors are focusing on capital intensity
The scale of NEXTDC's spending plans helps explain the market's caution.
The company expects to spend between $5.25 billion and $5.75 billion in FY27, representing roughly 55% to 70% growth from FY26, as it races to build capacity for AI and cloud customers.
The latest $1.1 billion convertible notes issue is also NEXTDC's third capital raising in just over four months.
For investors in NEXTDC shares, that reinforces an uncomfortable reality: the AI data centre boom may create enormous demand, but meeting that demand requires enormous upfront investment.
And higher interest rates make capital-intensive infrastructure businesses particularly sensitive to financing costs.
That's why NEXTDC shares have fallen roughly 14% over the past month even as contracted utilisation has surged to about 740MW and the company carries a 565MW forward order book.
Foolish takeaway
The market isn't necessarily questioning whether customers want NEXTDC's infrastructure.
It's questioning how much capital NEXTDC needs to spend before those megawatts translate into sustainable revenue and cash flow.
For shareholders, that's the key tension behind the recent sell-off of NEXTDC shares.
