SpaceX stock heads into the open after a 1.36 percent drop
Published on 09/21/2026 at 08:36 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
SpaceX stock closed at 152.71 USD on the Nasdaq on September 18, 2026, losing 1.36 percent compared with a prior close of 154.81 USD. Per recent market data, the shares traded between an intraday high of 156.60 USD and a low of 149.93 USD that day, with the move leaving the stock roughly 5 percent below its 160 USD IPO start price.
September 18, 2026 in numbers
Space Exploration Technologies Corp (ISIN US84615Q1031, Nasdaq: SPCX) saw its shares retreat on September 18, 2026 after investors reacted to a six-day delay of the company’s planned fourteenth Starship test flight from September 22 to September 28, as reported by MoneyDJ. According to Investors, the September 18, 2026 close at 152.71 USD, down 2.10 USD or 1.36 percent on the day, came with an intraday trading range between 149.93 USD and 156.60 USD and reflected an implied market capitalization of about 2.1 trillion USD. A detailed technical wrap from Ad-hoc-news noted that the closing level left the shares about 33 percent below their post-IPO peak while still placing the company among the largest constituents of the Nasdaq 100 by market value.
Nasdaq 100 reweighting takes effect today
Today, September 21, 2026, SpaceX is due for a sharp increase in its Nasdaq 100 index weight, which is set to rise from roughly 1.28 percent to 2.82 percent based on the September 18, 2026 closing price, according to data cited by CoinGabbar. As Eastmoney reports, the quarterly Nasdaq 100 rebalancing becomes effective on September 21, 2026 and is expected to trigger additional passive fund flows linked to index-tracking products, potentially increasing trading activity in SpaceX shares into today’s session. In parallel, Investors highlights that NASA on September 18, 2026 expanded its commercial crew transportation contract with SpaceX by up to three additional Crew Dragon missions to the International Space Station, with a maximum incremental value of 946 million USD, an agreement that extends the partnership through 2030 and remains a fundamental backdrop for the stock ahead of the open.
