In Q4'25, ONTO's Cash & Short-term Investments stood at $640M USD, reflecting a notable decline from the prior quarter's peak of $984M USD, while Debt remained at $0 USD, maintaining the company's debt-free status. Over the period from Q1'23 to Q4'25, Cash & Short-term Investments exhibited a robust upward trend, growing from $584M USD to a high of $984M USD in Q3'25, with consistent quarterly increases averaging around 7% until a sharp 35% drop in the final quarter; Debt showed no variation, staying at zero throughout, underscoring ONTO's strong liquidity position without leverage. This pattern highlights improving cash reserves amid operational growth, though the recent dip warrants monitoring for potential market or expenditure impacts.