Crypto arbitrage risks and how to reduce them
Arbitrage is often called risk-free income. It is not: the market direction risk really is removed, but other risks take its place - technical, exchange and operational ones. They are what most often turn a route that is profitable on paper into a loss. Here are the main risks and what to do about each.
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Why arbitrage is not risk-free
The textbook definition of arbitrage is buying and selling the same asset at different prices at the same time for a guaranteed profit. In crypto "at the same time" and "guaranteed" almost never hold: trades on two exchanges do not happen in the same millisecond, coins have to be moved, and money sits on venues that can behave unpredictably.
| Risk | Where it appears | How to reduce it |
|---|---|---|
| Closed withdrawals or deposits | Spot arbitrage with a transfer | Check status before trading, keep funds on both exchanges |
| A liquidated leg | Futures and delta-neutral routes | Low leverage, spare margin, alerts |
| A funding rate change | Funding arbitrage, hedged staking | Watch rate history, close when it flips |
| Slippage | Every route on a thin book | Count the spread at your size |
| Execution time | Transfers, manual entry | Funds on both exchanges, fast entry |
| Delistings and freezes | Altcoins, new tokens | Follow announcements, do not hold coins long |
| Account freeze, KYC | Any exchange | Verify in advance, do not keep everything on one exchange |
Closed withdrawals and deposits
The most common source of "huge" spreads: an exchange has paused withdrawals or deposits of a coin. Money cannot move, and the price on that exchange lives on its own. Buy the coin where withdrawals are closed and you cannot move it until they reopen - by which time the spread may be gone. The checks before a transfer are covered in the article on choosing a network.
A liquidated leg
In futures routes the positions sit on different accounts or exchanges. In a sharp move one leg gains and the other loses, and if its account is short of margin the exchange liquidates it. The other leg is left alone, and the position becomes an ordinary directional bet. This is the main risk of delta-neutral strategies.
| 10x: distance to short liquidation, roughly | +9-10% in price |
| 5x | ≈ +18-19% |
| 2x | ≈ +45-48% |
| 1x | ≈ +90% or more |
Approximate figures: the exact liquidation price depends on maintenance margin and the exchange's rules. For altcoins a 20-30% move in a day is not unusual.
Changing rates
Funding strategies live on the rate, and it is recalculated every period. It can flip, and a position that was receiving starts paying. Look at the history, not a single value, and decide in advance at what rate you close.
Slippage and time
The spread in the table is calculated on the best prices, while fills walk several levels of the book. While you open the second leg or wait for a transfer, prices move. See why the spread is not your profit and order book depth.
Exchange risks
- Verification (KYC). An exchange may ask for documents and limit withdrawals until checked. Better to complete it in advance.
- Account freezes. Frequent transfers between exchanges sometimes trigger extra checks.
- Technical outages. In strong moves exchanges get overloaded and orders do not go through.
- Exchange solvency. The market has seen exchanges halt withdrawals for good. Do not keep all your funds on one venue.
- Rule changes. Exchanges change fees, limits and funding terms.
A checklist before trading
Withdrawals and deposits are open
On both exchanges, on the same network, for the same token contract.
The spread is counted at your size
At the average fill price, after all fees and the transfer.
The spread holds rather than flickers
Stable routes hold for minutes.
For futures - spare margin
Low leverage, liquidation far away, alerts set.
A clear exit plan
At what spread, rate or loss the position closes.
The scanner filters out part of the risk automatically: it discards prices far from the index, flags closed withdrawals and deposits, checks book depth and shows how long a route has held. But the decision and the control of the position always stay with you.
Glossary
- KYC - identity verification at an exchange.
- Maintenance margin - the minimum margin below which a position is liquidated.
- Delisting - removing a coin from trading.
- Leg - one of the positions of an arbitrage route.
- Route stability - how long a spread holds rather than appearing for a second.
Arbitrage risk FAQ
Is crypto arbitrage risk-free?
No. Price direction risk is mostly removed, but closed withdrawals, liquidations, rate changes, slippage and the exchanges themselves remain.
What is the most common risk?
In spot arbitrage, closed withdrawals or deposits of the coin. In futures, a leg liquidated for lack of margin.
How do I avoid losing a coin in transit?
Check the network, the token contract, the tag or memo and the receiving exchange's deposit status before every transfer.
How many exchanges do I need?
At least two. Keeping everything on one exchange is risky, and spreading over too many is hard to control. Most work with 3-5 main venues.
What if one leg gets liquidated?
Assess the remaining position at once: it is no longer hedged and depends on price. Most often it is closed so arbitrage does not turn into a directional bet.
Can risk be eliminated completely?
No, but it can be cut sharply: check every route, keep spare funds and margin, avoid high leverage and have an exit plan.
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