Rocket Lab's Neutron Rocket Slips to 2027 on Fuel-Tank Snag, and Wall Street Is Recalculating the Bill

Rocket Lab's stock fell 8.2% on Friday to close at EUR 45.25, extending a slide that has left the shares roughly 66% below their 52-week high. The trigger was a single line in a mandatory disclosure: the maiden flight of the company's larger Neutron launch vehicle will not happen until 2027, a year later than planned, because of manufacturing difficulties on the forward dome of the first stage's fuel tank.

The problem, according to management, has been identified and fixed. The rework it requires is what pushed the schedule. For a company whose valuation has long rested on the promise of a heavier rocket capable of carrying lucrative payloads, the distinction between a solved defect and a lost year matters less than the calendar. Revenue tied to later Neutron missions in 2027 and 2028 now arrives later than models assumed, and the market repriced accordingly.

Three Houses, One Direction

Analysts spent Thursday and Friday marking down their targets while, notably, leaving their ratings untouched. Goldman Sachs' Noah Poponak kept a "Hold" on the stock but cut his target to $67 from $75, projecting a Neutron debut in the second quarter of 2027 and flagging additional spending and a higher cash burn over the coming quarters.

KeyBanc's Michael Leshock trimmed his target to $100 from $135 while maintaining a "Buy." His rationale carried two parts: the revised Neutron timeline, and a broader de-rating of growth-stage space equities across the sector. Citizens followed on Friday, lowering its target to $90 from $130 and keeping "Market Outperform," citing the Neutron slip and the knock-on delays to follow-on missions, according to media reports. Other observers also marked their targets down, some to as low as $90.

The pattern is consistent: conviction in the business model intact, risk premiums reinstated. The generous multiples that visionary space projects once commanded without much scrutiny are being written down.

The Cost of a Missing Quarter

What the market is really adjusting is not a date on a calendar but the pace of the entire future earnings model. Rocket Lab's current operations continue apace — the launch manifest lists the Electron mission "We're Not Hawking Around" for customer HawkEye 360 on October 21, 2026, a reminder that the existing small-launch system works. But the delayed entry into the heavy-payload business, where much of the medium-term thesis sat, carries more weight with investors right now.

Reuters reported that the shares came under heavy pressure in after-hours US trading when the disclosure landed Wednesday, with the Los Angeles Times also covering the delay. Rocket Lab said development and test campaigns will continue. In the launch business, however, lost months are rarely recovered without added cost.

The episode says as much about the commercial space sector as about Rocket Lab. A phase in which ambitious announcements and distant milestones justified lofty multiples appears to have given way to a demand for precise, on-time execution. Every technical setback on a key component stretches capital models and discounts later revenue streams more deeply. Rocket Lab remains one of the few operators with a proven launch record. The test now is whether management can permanently solve the manufacturing problems of its new rocket class. Until credible progress shows up on the test stand, the market's caution looks likely to hold.