Berkshire has a bunch of cash, but much less this year than last year. In 2021 they had $88.2B, and in 2022 they have $32.6B. Buffett hates holding excess cash because it loses him money every year due to inflation. The only reason he holds a lot of cash at times is to be ready to quickly consummate the next deal. And P/E for a company like BRK is mostly not meaningful because it varies dramatically, and Buffett doesn’t care that it varies because he doesn’t manage for quarter to quarter profits, instead he manages for increasing intrinsic value over time.
It is never predictable with any decent level of accuracy.
BRK cash levels - Berkshire Hathaway Cash on Hand 2011-2025 | BRK.A | MacroTrends