Rocket Lab Corporation shares edged lower on Thursday in a volatile, high-volume session, as investors balanced the company's impending addition to the Nasdaq-100 index against renewed pressure from SpaceX's post-IPO decline. The stock closed at $107.24, down 0.7%, after trading between $101.12 and $110.98. Approximately 70.3 million shares changed hands, well above the daily average.
The timing of the move is significant. Thursday was the last regular U.S. equity session before the Juneteenth market holiday, and Rocket Lab is scheduled to join the Nasdaq-100 before trading opens on Monday. The Nasdaq-100 is the benchmark index of the largest non-financial companies listed on the Nasdaq; inclusion typically triggers buying from index-tracking funds, though such inflows do not inherently reflect the company's earnings power.
That mechanical support was countered by a cooler market signal from the broader space sector. SpaceX, which recently went public, fell 3.5% to $185, extending its pullback after a blockbuster debut that had briefly made it the market's primary reference point for commercial space valuations. Reuters reported earlier Thursday that IPOX Schuster analyst Kat Liu noted "some degree of profit-taking is not surprising" following SpaceX's sharp first-week rally. Analysts and portfolio managers also cautioned that SpaceX could remain volatile due to its high valuation and limited public float.
The broader market was not a headwind. The Nasdaq Composite rose 1.91% on Thursday, while the S&P 500 gained 1.08%, supported by strength in chip stocks and easing oil concerns. The session also saw "triple witching," the simultaneous expiration of stock options, index options, and futures, which boosted overall market volume.
Wall Street's divergent views were reflected in analyst calls. KeyBanc analyst Michael Leshock upgraded Rocket Lab to Overweight and set a $135 price target, calling the company "the clear #2 to SPCX" and also turning bullish on Firefly Aerospace, another launch-services peer.
Rocket Lab has its own index story. Founder and Chief Executive Sir Peter Beck called the Nasdaq-100 inclusion a "landmark moment," stating it demonstrated the "growing importance of the space economy." The company said it has completed more than 80 successful launches and deployed more than 250 satellites.
The fundamental case rests on growth, not the index badge. Rocket Lab reported first-quarter revenue of $200.3 million, up 63.5% from a year earlier, and a backlog of $2.2 billion—representing contracted work not yet booked as revenue. It also said it signed 31 Electron and HASTE contracts and five dedicated Neutron launch deals in the quarter.
However, the downside case remains clear. Rocket Lab posted a first-quarter net loss of $45.0 million, or 7 cents per share, and its medium-lift Neutron rocket for larger payloads remains in development. The company itself warned that statements about launch schedules, Neutron, and future operations are forward-looking and subject to risks.
The next test comes Monday. Index funds may add demand, but the cleaner question is whether buyers treat Thursday's weakness as a pause before passive inflows, or as a sign that Rocket Lab's valuation now has to clear a tougher bar with SpaceX trading in public view.
