Short selling: making money when price falls

How shorting actually works

Most beginners think of trading as buy low, sell high. Shorting flips that order: sell high first, buy low later. The trick is that you do not own the shares you are selling. Your broker borrows them from another customer's account or from an institutional lender and lets you sell them. You promise to buy them back and return them.

Walk through it with $500. You think Tesla is overpriced at $200. You short 2 shares at $200, collecting $400 in cash. Tesla falls to $150. You buy 2 shares back at $150 ($300), return them to the lender, and keep the $100 difference. You made money on a price drop. That is the entire mechanic.

What can go wrong? Three things. One, price rises instead of falling. If Tesla goes to $300, you need $600 to buy back what you sold for $400 — a $200 loss on a $400 trade. Two, the lender wants the shares back (called a recall) and you have to cover early at whatever price the market gives you. Three, the broker charges you a daily fee to borrow the shares, which we will cover in the next lesson. Some heavily shorted names carry borrow rates over 100% per year.

One more wrinkle: if the company pays a dividend while you are short, you owe that dividend to the lender. The lender lent you the shares; they should have received the dividend; you have to make them whole. This shows up as a debit on your statement.

Recap: shorting = borrow, sell, buy back, return. Profit when price falls. Loss has no ceiling. Borrow fees, recalls, and dividends owed are the hidden costs.