Some people who work at big companies sold some of their own shares in the company. This could mean they think the company isn't doing so well, or they want to have less money tied up in the company. When people who work at a company sell a lot of shares, other people might think it's a bad sign and sell their shares too, which can make the company's stock price go down. Read from source...

- Bank of America CEO selling shares: mentioned $25 billion stock repurchase program, but did not explain how this affects the stock value or his decision to sell.
- Accenture acquisition: mentioned as a reason for insider selling, but did not explain why the acquisition would affect the stock price negatively.
- Hershey analyst downgrade: mentioned, but did not explain why the analyst's opinion would affect the stock price or the insider's decision to sell.
- Trade Desk analyst reiteration: mentioned, but did not explain why the analyst's opinion would affect the stock price or the insider's decision to sell.