Core Insights - The Global X Defense Tech ETF (SHLD) represents a significant shift in the defense industry, moving away from traditional heavy industry towards the high-margin area of software-defined warfare [1] Group 1: Industry Overview - The ETF's portfolio emphasizes companies that are innovating in software-defined warfare, indicating a trend towards technology-driven solutions in defense [1] Group 2: Investment Focus - The focus on high-margin sectors suggests potential for greater profitability and growth within the defense technology space [1]