MCX May Option Expiry: ITM Devolvement Forces Margin Crunch by 7 PM

Base Metals and Natural Gas: May 22 Double Expiry

May 22 concentrates risk with four contracts expiring simultaneously: copper, zinc, natural gas, and natural gas mini. The overlap of base metals and energy means that margin calls can compound for traders with positions across these segments. Copper and zinc futures are sensitive to global industrial demand signals, while natural gas futures react to domestic inventory data and weather forecasts. An ITM natural gas option that devolves into a futures contract on the same day that a storage report moves prices can create an immediate mark-to-market loss on top of the margin requirement. The exchange’s rule that fresh long options positions are not allowed in NRML on expiry day further constrains liquidity. Traders cannot open new long options to hedge or roll positions on the final day. Only squaring off or devolvement is permitted.

Precious Metals: Silver and Gold Expiry Cascade

The precious metals expiry sequence runs from May 26 through May 29. Silver and SilverM options expire first on May 26, followed by gold options on May 27 and GoldM options on May 29. The staggered schedule means that margin freed up from one expiry cannot be assumed available for the next without careful planning. Gold futures margins are among the highest on MCX, and a large ITM gold call that devolves into a full-size futures contract can demand a margin deposit that dwarfs the initial option premium. Silver, with its higher volatility, can produce even sharper margin swings. The 7 PM deadline on each of these days is absolute; a trader who meets the margin for silver on May 26 may still face a square-off in gold on May 27 if funds are not reallocated in time.

The 7 PM Margin Deadline and Devolvement Mechanics

The devolvement process is mechanical. The margin math, however, is not. The resulting futures margin is determined by the exchange’s risk array, which updates daily based on price volatility. Traders must use the MCX margin calculator to check the exact requirement for the specific contract and quantity. The 7 PM cutoff is the time by which the broker must have the margin in the account; any delay, even by minutes, can result in a square-off. The square-off itself is executed at the prevailing market price, which can be distorted by the very forced liquidation it triggers. For large positions, this can cause a cascade of selling or buying that moves the underlying futures price in the final minutes of the session.

The restriction on fresh long options positions in NRML on expiry day means that the only way to avoid devolvement is to close existing positions before the market closes. Traders who wait until the last hour may find that liquidity has dried up, forcing them to accept the futures conversion and its margin consequences. The practical takeaway is to review all open option positions against the expiry calendar now, calculate the potential futures margin, and either fund the account or close the positions well before the 7 PM deadline. The next decision point is the shift in open interest as expiry approaches, which will signal whether large positions are being rolled or liquidated, setting up the next move in the underlying futures.

For broader context on the commodities driving these expiries, see AlphaScala’s commodities analysis.