SPCX ▼ -4.3% - Space Exploration Technologies Corp. $SPCX SpaceX's Next Lockup Expiration Set For Sept. 24, Unlocking ~328M Shares SpaceX shares fell 4.3% today ahead of a lockup expiration scheduled for September 24, when approximately 328 million shares are set to become available for sale. The expiration of insider lockup periods typically pressures stock prices as it increases the potential supply of shares in the market. 23-SEP-2026 03:56 PM ET