It means nothing to the actual company other than a scoreboard they can point to, as the stock should reflect the performance and outlook of the company.
Except that scoreboard is exactly what they point to when they need a loan or other capital investment to grow their business. Better stock value = bigger/better loans.
Oh, and also the companies are able to release additional stock to raise capital outside of their IPO.
And their executives are rewarded for having high stock value.
This is about collective action, not just one or two people. You seem to be leaning heavily into the same excuses everyone uses when they don’t want to do the right thing if it’s even a small inconvenience. “Why should I do X when there’s a bunch of other people doing Y? It’ll never make a difference.”
Sure, in a vacuum, you selling your stock in BP won’t make a difference, but alternatively in a world where asset managers collections holding over $8 trillion in assets have pledged to divest from fossil fuels, the pool of people willing and able to buy up those shares is shrinking, and the more people who act the smaller the pool gets.
On this note:
would you rather invest at a valuation of $20B or $75B. You’re saying $75B, but the answer is $20B.
I’ve got no idea where you went overboard here, but what I’m saying is, if the company in question is doing significant harm to the planet, don’t invest. Not sure why you thought I meant invest later.
And if the moral argument against profiting from harmful industries isn’t good enough for you, financially you’re introducing risk to your portfolio by choosing to invest in companies that are at high risk of running into regulatory challenges and lawsuits globally.