What is Clean Air Metals Cash, Cash Equivalents, Marketable Securities? Clean Air Metals‘s quarterly cash, cash equivalents, marketable securities declined from Oct. 2023 ($5.10 Mil) to Jan. 2024 ($4.41 Mil) but then stayed the same from Jan. 2024 ($4.41 Mil) to Apr. 2024 ($3.81 Mil). Clean Air Metals‘s annual cash, cash equivalents, marketable securities increased