Sigh... Folks are starting to look at prices for the NEXT day...
As much as I enjoy following prices... the TRUTH is that unless you are a trader... so not follow prices... follow performance/profits...
Do not buy at any price... buy a good firm at a FAIR (you need to figure out what fair is) price...
[I bought a lousy firm at a 'fair' price to speculate & it go me nowhere!]
Going back to Warren Buffett... Once you have bough a good (management, industry, sector) firm at a fair (or cheap) price... relax... look into it once in a while... but do NOT panic with a slight price drop... So what?
If there is a substantial price drop WITHOUT change in fundamentals... maybe buy more...
If the price makes it 'too expensive' then you can sell some or all of your position!
Greedy when others are fearful. Very fearful when others are greedy - to paraphrase Warren Buffett