The aerospace and defense industry is likely in for a massive shift in 2026 as SpaceX prepares for a public offering that could fundamentally redefine the sector's hierarchy. RTX stock is climbing. See the chart and price action here. SpaceX's projected valuation has reached a staggering $800 billion, a figure that eclipses the combined market capitalization of America's six largest defense contractors.Read Next: Top Stocks With Earnings This Week: Micron, FuelCell, Carnival and More Here's a look at the Be ...