Space Stock Set to Join Nasdaq-100, $8 Billion Market Cap Vanishes in a Day

Rocket Lab (NASDAQ: RKLB) closed down 10.5% at $102.73 on June 12, wiping out roughly $5.6 billion of its market value—down from about $59.4 billion—while trading volume surged past 42.96 million shares. After a recent sharp advance, volatility has picked up amid a broader pullback and profit-taking across the space and defense sectors.

That same day, Rocket Lab confirmed it will join the Nasdaq-100 index effective June 22, fueling expectations for inflows from index-tracking funds. Earlier, the company secured a roughly $90 million contract with the U.S. Space Force to build geostationary satellites and reported record Q1 revenue of $203 million, reinforcing its growth narrative.

Founded in New Zealand and now headquartered in Long Beach, California, Rocket Lab specializes in small-satellite launch services, pioneering the market with its Electron rocket. The company is categorized as a growth stock, focused on developing its reusable medium-lift Neutron rocket and expanding U.S. defense and Space Force satellite orders. Its share price is chiefly driven by launch success rates, U.S. defense budget trends, and announcements of new contracts.