Spoofing
Spoofing is the illegal practice of placing large limit orders with no intention of execution, to create a false impression of supply or demand and move price in the desired direction. Regulators actively prosecute spoofing in futures markets.
Spoofing is a form of market manipulation in which a trader places large visible orders on one side of the book with the intent to cancel them before execution. The goal is to create a false impression of supply (fake asks) or demand (fake bids) that influences other participants to trade in the desired direction.
How spoofing works
- Trader wants to buy at a lower price
- Trader places a large sell order above the market (fake offer) to create the appearance of heavy resistance
- Other participants, seeing the resistance, sell (or reduce buying), pushing price down
- Trader cancels the fake sell order and buys at the now-lower price
- Price rebounds as the artificial pressure is removed
The reverse works for selling: place fake bids below to attract buyers, push price up, cancel the bids, sell short.
Spoofing vs legitimate order cancellation
Not all cancelled orders are spoofing. Market makers and algorithmic traders cancel and modify orders constantly as a normal function of providing liquidity. The distinction is intent:
- Legitimate: orders placed to genuinely trade if price reaches them, cancelled when conditions change
- Spoofing: orders placed with intent to never fill, solely to influence other participants
Intent is difficult to prove, which is why spoofing prosecutions rely on pattern analysis: repeated, systematic placing and cancelling of large orders correlated with advantageous fills on the other side.
Legal status
Spoofing was explicitly prohibited in the US by the Dodd-Frank Act (2010). The CFTC and DOJ have prosecuted numerous spoofing cases against banks and individual traders, with significant fines and prison sentences. Major cases have involved Deutsche Bank, JPMorgan, and Navinder Singh Sarao (the “Flash Crash trader”).
For retail traders
You cannot legally spoof, and you do not have the speed to do so effectively even if you tried. The practical implication is defensive: learn to recognize when DOM signals may be spoof orders and avoid trading based on fake walls that disappear on approach.