Subject: On those days when the market goes up ...
... maybe companies are buying back their own shares.

https://finance.yahoo.com/news...
(Bloomberg) — While many investors have been scared away from tech giants at the center of this year’s equity rout, the companies are likely to continue plowing money into buybacks that will offer at least one source of continuing support for the stocks.

The big tech firms could be tempted to hold onto their cash to guard against the economic turmoil created by President Donald Trump’s tariff policies. However, buybacks remain attractive because companies like Microsoft Corp. (MSFT), Amazon.com Inc. (AMZN) and Apple Inc. (AAPL) are sitting on piles of cash worth north of $500 billion.

There is an interesting chart of the cash several tech companies have had from 2022 to Q4 of 2024.