The fed injected $30 billion (10/31) into the banking system to correct a shortfall of funds that have dropped by over $1 trillion in October. Additional money was kicked in 3 other times this past month adding up to $110 billion.

The last time this occurred was 2019

https://m.economictimes.com/news/international/us/is-the-fed-quietly-signaling-trouble-ahead-powell-injects-29-4-billion-into-the-banking-system-biggest-repo-operation-since-2020-as-u-s-bank-reserves-crash-to-2-8-trillion/articleshow/125017706.cms