Rocket Lab (RKLB) traded lower Monday, with the decline tied to Washington ending a Mars sample-return approach that had been estimated around $4 billion. The move hit sentiment because Rocket Lab had previously outlined a concept to return the Mars Perseverance rover’s samples by 2031 under a fixed-price structure, even though any related revenue would have been years away.

Despite the far-off timing, the headline removed a potential marquee program that some investors viewed as an upside option for the company’s longer-term exploration ambitions. With Rocket Lab’s valuation elevated relative to near-term fundamentals, the stock has been sensitive to negative space-program headlines and perceived reductions in future opportunity set.

Investors will likely refocus on nearer-term drivers including Electron launch cadence, growth in space-systems revenue, and progress toward Neutron’s first flight. Any updated schedule detail on Neutron development, plus upcoming quarterly results and forward guidance, could matter more for the next sustained move than a program decision with a potential timeline into the next decade.