You can't. If you own stock and an investor is selling that stock short, that investor has to borrow the stock in order to sell it. the broker lends the stock out of its holdings, which includes your shares plus the shares of many other clients of th...
My 1990 GSX ran 14.3 stock, but could have broken into the 13s (I had a bad launch). The only thing I did was up the boost a little, but the mechanicals were all stock. This was last year with 135,000 miles on the car.
There isn't a set number of shares that a company has. A company can have 10 shares, or it can have 10 million shares. Whatever it is, the total shares cannot exceed 100% of the company. So if a company has 100 shares outstanding of stock, then 1 sha...