[hylaride]

Those 180m shares would represent ~10% of the company. The rest are either locked up and are not allowed to be sold by employees or certain investors for a certain period* or are held by the IPOing company itself to sell off at a later date, depending on demand.

* This is common in IPOs or other events (eg leading up to earnings announcements). The thinking is that if everybody dumped the stock at once, it'd depress the price. It's also common to prevent insider trading. There are a lot of employees who are probably waiting nervously for the blackout period to expire.

[chinesegoldfarm]

is there a website or something to know how many shares does all major companies, appl, googl, amzn offer to the public market? thanks!

[hylaride]

Any stock research platform will tell you shares outstanding ( https://finance.yahoo.com/quote/UBER/key-statistics?p=UBER ), but it’s otherwise as easy as dividing the market cap by the current stock price.

[chinesegoldfarm]

but again, market cap is the full value of public shares available, how can we now that only 10% of uber's shares are public and 90% privately? or how can we know how many public shares does apple offer and how many are private?

[hylaride]

No, market cap is all shares, including ones held privately.