In Q4'26, Dell's total operating expenses reached $3.65B USD, comprising $797M USD in R&D expenses and $2.84B USD in SG&A expenses, reflecting a slight uptick from the previous quarter's $3.02B USD total. Over the period from Q1'24 to Q4'26, R&D expenses exhibited a steady upward trend, rising from $688M USD to $797M USD with minor fluctuations, indicating sustained investment in innovation. In contrast, SG&A expenses showed greater volatility, peaking at $3.52B USD in Q2'24 before declining to $2.84B USD by Q4'26, suggesting ongoing cost optimization efforts amid varying business conditions. Overall, the stacked bar chart highlights a dominant SG&A component, averaging over 80% of total expenses, with the combined operating costs growing modestly by about 12% across the timeframe.