What exactly do you mean by "feel pressures" on their stock? Once a share has been sold the company has already received all the money it will ever receive from that share. Whether it goes up or down from that point is irrelevant to the company. For whoever bought that share it might be a problem if he wishes to sell it again. Most of the investors buy IPO shares for dividends, so as long as the company makes money and pays dividends they also don't care about the share price.