No. Investors are people who have bought a share of the company and hope to be rewarded with a share of the profits. It is in their interests to see that the company accounts are correct and that the directors are doing a proper job.
The people who buy shares hoping to sell them to somebody else for more money at a later date aren't true investors, they are speculators. It is in their interest that the company is perceived to be worth as much as possible.
Unfortunately, there are too many of the latter type of "investors" and too few of the former, to the point that it often distorts the way a company is run by the directors. Share price is taken to be the most important metric of "success" to the point that choices that would lead to a more sustainable business are eschewed in favour of choices that lead to a bump in the short term share price.