The dominance of trillion dollar companies, Apple at $2.4 trillion and Microsoft at $2.1 trillion, which make up 13% of the S&P 500 index during the regional banking crisis of 2023. The index was up 3.5% in March even as some banks were shut down by the FDIC. This has given these two companies the role of a safe haven in the crisis, along with chipmaker Nvidia. Not for the tech sector's other companies such as Google, Amazon, Facebook and others which are companies facing monopoly behaviour scrutiny and possible breakup by the Biden administration and Congress.