The latest data point for AMAT's operating expenses in Q2'26 shows R&D expenses at $1.03B and SG&A expenses at $397M, resulting in total operating expenses of $1.43B, marking a notable increase driven primarily by R&D growth. From Q3'23 to Q2'26, total operating expenses have exhibited an overall upward trend, rising from $1.17B to $1.43B, with R&D expenses showing consistent growth from $767M to $1.03B despite minor fluctuations (e.g., a dip to $754M in Q1'24). SG&A expenses have remained relatively stable, fluctuating between $397M and $483M without a clear directional pattern, underscoring R&D as the dominant driver of expense expansion in this stacked bar chart.