speculation
Yes, it is possible to profit from both selling and buying the same stock through a trading strategy called "buying low and selling high." This involves purchasing the stock at a lower price and then selling it at a higher price to make a profit.
Human Trafficking/ Slavery?
The strategy of selling a stock and buying it back to potentially profit from market fluctuations is called "short selling." This involves borrowing a stock, selling it at the current price, and then buying it back at a lower price to return it to the lender, pocketing the difference as profit.
Buying and selling securities refers to the stock market usually. It is the buying and selling of stocks and mutual funds to make a profit.
profit = selling price - (cost of buying + overheads)
A business of buying and selling people for profit
By buying a currency, waiting until that currency strengthens against your initial currency, and then selling back and making a profit.
speculators
speculation
Buying and selling furs
Yes--buying and selling involves profit and these occur in communist countries.
To make a profit. Buying stocks at a low price and selling them at a high price is the easiest way of making money.