Go to some investing site and look up "Seasonality". There are actually trading systems constructed around the idea that periodic inflows into the stock markets occur based on payday and around holidays when bonuses are traditionally given.
Yes. You noticed a thing that is real.
>every news agency in the world
Turn off the news. Don't ever watch TV.
Focus on re_reading the crumbs and what POTUS tweets. If you need a pick-me-up request cheerful memes from the memecorps. We aim to please.
When payroll deposits are made to 401K accounts, the fund managers are required to invest the money in a specific asset class. "Other people's money".