NextDC shares plunge 42% to a near nine-year low after outlook cut

NextDC cut FY27 net revenue guidance to A$475 million–A$500 million from A$615 million–A$640 million and underlying EBITDA guidance to A$245 million–A$265 million from A$385 million–A$410 million, citing power-infrastructure delays at its M3 Melbourne facility. Shares plunged 42.1% to A$5.32, while the S&P/ASX 200 was little changed. The company also reduced FY27 capex guidance to A$4.5 billion–A$5 billion and is reviewing affected customer contracts and potential service-level credits or termination rights.

Analysis

The key risk is not simply a one-year earnings deferral: contracted capacity that cannot be reliably powered weakens the credibility of capacity-based growth forecasts and could raise the required return on future Australian data-centre projects. Cutting capex cushions near-term cash needs, but also puts the growth pipeline and utilization trajectory in question; it does not by itself establish that the underlying projects earn acceptable returns. The exposure of already-billing contracts and possible service credits or termination rights makes customer retention and contract remedies important valuation inputs, not footnotes.

Second-order beneficiaries could include Australian operators with demonstrably available power and capacity, if customers can move workloads or new commitments. That substitution is conditional: switching may be slow, and contracts still in place limit any immediate share gain. The episode may also make utilities, planners and community opposition more visible bottlenecks in Australian data-centre underwriting, rather than demand alone.

Near term, the post-gap-down risk/reward for an outright short is less attractive; volatility and uncertainty around contract treatment can produce sharp reversals. Over 1–3 months, the November 20 spending review and November 28 Victorian election are catalysts, but neither guarantees a power-work schedule. Over 6–18 months, the central question is whether grid delivery and customer billing resume on a credible timetable. A confirmed commissioning schedule, enforceable contractual relief and retained customers would challenge the bearish case; further delays, credits or terminations would deepen it.

Key Decisions for Investors

• Avoid treating the selloff as a confirmed valuation floor. Keep NextDC underweight pending the November 20 review; do not add solely on the prospect that deferred capacity will eventually bill.
• For investors needing sector exposure, consider a hedged relative position: underweight NextDC against more geographically diversified data-centre operators such as Equinix or Digital Realty. Keep sizing modest because their exposures and valuations are not directly comparable, and Australian customer switching is unproven.
• Before changing the thesis, verify the affected contracted power and revenue, customer termination or service-credit provisions, revised grid milestones, and any consequences for funding or covenants. The article does not establish the size of these exposures or the company's liquidity headroom.
• Watch for a written, dated M3 power-delivery timetable and evidence that customers remain committed. Repeated milestone slippage, material contract exits, or renewed guidance cuts would validate further downside; restored milestones with no material customer leakage would argue against extending the short.