Rocket Lab stock slips on KeyBanc downgrade as insider sale filing lands
New York, Jan 15, 2026, 17:56 EST — After-hours Shares of Rocket Lab Corporation slipped Thursday following a downgrade from KeyBanc, halting a recent rally that had drawn attention to the space company’s valuation. The stock closed down 1.13% at $90.76 and later dipped another 0.53% to $90.28 in after-hours trading. (Investing.com) The downgrade hits hard because Rocket Lab is now seen as a high-beta proxy for “space-and-defense” enthusiasm, with its shares acting like they depend on fresh catalysts. In that environment, one company’s pullback can spark rapid selling. This follows a steep climb that leaves minimal margin for missteps,