How does shorting crypto work?

Shorting crypto means setting up a trade that gains when a coin's price falls. The classic method is to borrow the coin, sell it straight away, then buy it back later to repay the loan. If the price has dropped, the trader keeps the difference. If it has risen, the trader pays the difference. This guide explains the mechanics only and does not suggest anyone should do it.

How do you short crypto on an exchange?

Some exchanges offer margin trading, where the platform lends the coin to be sold. Kraken's support pages describe how this works for a short position: Kraken supplies the coin from its margin pool, and the trader pays an opening fee plus a rollover fee based on the amount borrowed. Normal trading fees apply when opening and closing. Kraken says margin is only available to clients who meet its eligibility rules.

The same idea underlies short selling of shares. The SEC's Investor.gov explains that a short seller pays interest on the loan plus fees, and must pay the lender any dividends while the position is open.

Futures and perpetual contracts are another common route. They let a trader go short without borrowing coins at all. How they work, including margin, funding payments and liquidation, is covered in what are crypto futures and leverage.

Can you short a crypto ETF?

Yes, in two ways. First, a US spot bitcoin ETF trades on a stock exchange, so its shares can be sold short through a broker like other listed shares, if the broker can borrow them. Second, listed options exist on some of these funds. The SEC approved options on BlackRock's iShares Bitcoin Trust in September 2024, the first for a spot bitcoin ETF. A put option gains value as the underlying price falls.

What is an inverse bitcoin ETF?

An inverse ETF aims to move in the opposite direction of its benchmark, but only for a single day. ProShares Short Bitcoin ETF (BITI), launched on June 21, 2022, targets minus one times the daily performance of the Bloomberg Bitcoin Index. It uses futures and swaps rather than borrowing and selling bitcoin.

The daily reset matters. Investor.gov warns that over weeks or months, an inverse fund's return can differ sharply from the simple opposite of the index, especially in volatile markets. It calls these funds specialized products that are generally not suited to buy-and-hold investors.

What happens when you short crypto and the price rises?

Losses grow as the price climbs. Investor.gov notes that shorting leaves a trader open to potentially unlimited losses, because there is no ceiling on how high a price can go, while a buyer can only lose what they paid. Borrowing costs keep adding up the longer the position stays open. With margin or leverage, a position can also be liquidated if collateral runs low, as the futures guide explains. Can you lose more than you invest in crypto covers those risks in more detail.

Rules differ by country and change often. Check the regulator or a qualified professional for your own situation.