RE: Thermo Fisher buys Dutch firm that tests for coronavirus in $11.5 billion deal4 Mar 2020 09:08
Bigideas has it spot on, but the inevitable consequence is that everyone (investors that is) immediately looks at what else is in that sector. TSTL for example hs risen 6% already this morning.
What you can say for sure, is that for every buyer, there is a seller who sees fair value at the trade price.