The 2022 LME nickel disruption
How concentrated short exposure, geopolitical stress, margin pressure, and fragmented visibility contributed to a disorderly nickel market.
Why this event still matters
Between 4 and 8 March 2022, the London Metal Exchange's three-month nickel contract more than trebled. In the early hours of 8 March it traded above $100,000 per tonne. The move threatened defaults among exchange members, and the LME suspended the market at 08:15 London time before cancelling trades executed that morning. [1][2][4]
Russia's invasion of Ukraine had increased uncertainty around metal supply, while a large short position and related over-the-counter exposures faced escalating margin demands. The event combined a physical commodity shock, short covering, incomplete visibility across exchange and bilateral positions, and inadequate controls for extreme volatility. [2][3][4]
Event reconstruction
Nickel rises rapidly
Supply concerns and short covering accelerate the move.
Price more than trebles
The three-month nickel contract reaches disorderly levels and threatens member defaults.
Trading is suspended
The LME halts nickel trading and later cancels trades from the affected morning.
Market reopens
Trading resumes with additional controls and an extended period of operational scrutiny.
A short position met a supply shock
Nickel markets were already tight when Russia's invasion of Ukraine increased uncertainty around a major producing country. Rising prices placed pressure on firms and intermediaries with short exposure, including positions connected to physical production and over-the-counter hedges. [1][2]
A short hedge can be economically related to physical assets while still requiring cash margin as the derivative rises. The timing mismatch between gains on an asset and margin due on a futures position can create a liquidity crisis even when the long-term hedge rationale remains. [1][2]
Why margin became a system constraint
Variation margin transfers current gains and losses in cash, often on a short schedule. As nickel rose, short holders and their clearing members faced very large calls even if a physical business expected future revenue from producing metal. Economic hedging does not ensure that cash arrives at the same institution or at the same time as the derivative margin obligation. [1][2]
The Bank of England reported that margin calls at LME Clear increased significantly. If members cannot pay, a price move becomes a clearing-stability problem. The exchange's suspension cannot be understood only as a dispute between winning and losing traders; authorities were also concerned about defaults and transmission to firms using nickel prices and hedges in the wider economy. [2]
Cancellation created a second form of risk
Cancelling the morning's trades reduced immediate stress but removed transactions on which buyers and sellers may have relied. A participant who bought nickel and sold a related hedge elsewhere could be left with only one side after cancellation. Emergency action can therefore stabilize a venue while creating basis and legal uncertainty for individual portfolios. [1][3]
The courts later upheld the LME's use of its powers, but the commercial lesson does not depend on whether the decision was lawful. Traders in any venue should review the rulebook for error policies, disruption events, price limits, and trade busts. Execution finality is an assumption with contractual exceptions. [3][4]
Short covering accelerated the move
As nickel rose, short holders needed additional collateral or had to buy contracts to reduce exposure. That buying entered a market with limited available supply and reinforced the price increase. Between 4 and 8 March, the LME three-month contract more than trebled according to the FCA's final notice. [2]
Exchange data did not provide a complete real-time picture of related OTC exposure. Fragmented visibility can make concentration appear smaller until margin calls and covering trades reveal the common position. [1][2]
The exchange suspended and cancelled trades
The LME suspended nickel trading at 08:15 London time on 8 March after concluding that a disorderly market had arisen. Trading remained suspended until 16 March. The exchange also cancelled trades executed during part of the affected morning. [1][2]
Suspension protected clearing stability but created its own consequences for participants who believed they had executed or hedged. Contract risk includes the venue rulebook, emergency powers, trade-cancellation authority, and reopening process. [1][2]
Application to leveraged shorts
A short has bounded gains if price reaches zero but theoretically unbounded losses as price rises. Position sizing should reflect squeeze and gap scenarios rather than assuming the recent range defines the maximum move. [2]
Gross liquidity requirements matter even for hedged portfolios. Margin may be payable before gains elsewhere are realized or transferable, and market suspension can prevent normal rebalancing. [1][2]
The controls were not prepared for genuine disorder
The FCA's final notice found that the LME's policies, controls, and training had not adequately addressed extreme volatility. During Asian trading hours, staff did not escalate the rapidly rising market to senior decision makers and price bands were disabled during part of the most extreme move. [4][5]
This distinction matters because disorder need not begin with an erroneous trade or a malfunctioning algorithm. Genuine orders can produce a disorderly market when position concentration, short covering, and limited liquidity interact. Controls must respond to the state of the market, not only to whether each individual order appears intentional. [3][4]
What to carry forward
The nickel disruption shows that contract risk includes the venue itself. Price limits, margin calls, suspension powers, cancellation rules, and reopening procedures can determine the outcome as much as the underlying view. A hedged book can still fail if cash margin is due before gains elsewhere can be realized or transferred. [1][2][3][4][5]
Short covering reinforced an already rising market
OTC positions reduced exchange-wide visibility
Margin liquidity threatened clearing-member resilience
Short positions can have nonlinear upside exposure
Gross margin calls matter even for hedged books
Venue suspension and trade-cancellation rules are part of contract risk
Sources and primary documents
Claims above link to the numbered records used in this case file.
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