Natural gas is the second big energy contract on the Multi Commodity Exchange (MCX), after crude oil. It is cheap per unit, moves fast and reacts to things most Indian traders never think about, such as the temperature in Chicago. This guide explains what MCX natural gas tracks, why it is so volatile, which weekly report to watch, and how its options behave.
What MCX natural gas tracks
MCX natural gas is linked to the Henry Hub natural gas contract traded on the New York Mercantile Exchange (NYMEX). Henry Hub is a pipeline hub in Louisiana and the benchmark for US gas prices. Its price is quoted in US dollars per mmBtu, a million British thermal units, which is a measure of energy, not of volume.
MCX natural gas (₹ per mmBtu) ≈ Henry Hub (US$ per mmBtu) × USD/INR
Example: with Henry Hub at US$3.50 and the rupee at ₹88.50, MCX natural gas trades near ₹310 per mmBtu. A move of 10 cents in Henry Hub, to US$3.60, changes the MCX price by about ₹8.85. That looks small, but one lot covers a large number of mmBtu, so the rupee profit or loss per lot adds up quickly. MCX lists a standard contract and a smaller mini contract; check the current lot sizes and margins on MCX or with your broker.
Note that this is US gas. India's own gas prices, used by city gas and fertiliser companies, are set differently and do not move with the MCX contract day to day.
The live natural gas straddle
Natural gas options are very actively traded on MCX. The at-the-money (ATM) straddle, the call plus the put nearest the futures price, shows how much movement the market expects. Here it is through today's session:
Compare the straddle with the futures price: the straddle is usually a much bigger share of the price than for NIFTY or gold, because natural gas moves so much more. Watch for spikes on Thursday evenings, when the storage report is released, and on days when US weather forecasts change sharply.
Why weather matters so much
In the US, natural gas heats homes in winter and runs many power plants that supply air conditioning in summer. So demand depends heavily on temperature:
- Winter (November to March). A colder-than-normal forecast for the populous north-east and Midwest can push prices up sharply. A mild winter can crush them.
- Summer (June to September). Heat waves raise power demand. Hurricanes in the Gulf of Mexico can disrupt production or exports, and the effect can go either way.
- Shoulder seasons (spring and autumn). Demand is lower and prices often drift; the focus shifts to how much gas is being put into storage.
Traders watch weather forecasts for one to two weeks ahead. Because forecasts change daily, natural gas can gap at the open after a weekend update to the outlook.
The Thursday storage report
Every week the US Energy Information Administration publishes how much natural gas is held in underground storage and how much it changed from the previous week. It comes out on Thursday at 20:00 India time while the US is on daylight saving time, and 21:00 the rest of the year (holidays can move it).
The market compares the actual change with what analysts expected:
- A smaller injection or bigger withdrawal than expected means supply is tighter: prices usually rise.
- A bigger injection or smaller withdrawal than expected means more gas than needed: prices usually fall.
The move in the first minutes can be several percent. Option premiums often rise during Thursday afternoon and fall right after the release, the IV crush effect.
Other drivers
- US production. Gas output from shale fields responds to prices over months. Record production tends to cap prices.
- Exports of LNG. The US ships liquefied natural gas abroad. New export plants raise demand; an outage at a large plant can drop US prices quickly.
- European and Asian gas prices. High prices abroad pull more US gas into exports.
- The rupee. As with crude, a weaker rupee lifts the MCX price.
- Contract rolls. Gas prices for winter months are usually higher than for summer months. When MCX rolls from one month to the next, the next contract can trade at a very different price.
Why natural gas is so volatile
Gas is hard to store and transport compared with oil, so local shortages and surpluses cannot be smoothed out quickly. Demand swings with the weather, which nobody can forecast precisely beyond a few days. The result is one of the most volatile contracts in India: moves of 5% in a day are common, and 10% days happen.
That volatility shows up in option prices. Natural gas options carry a much higher implied volatility than NIFTY or gold options. A straddle that looks expensive by NIFTY standards may be normal for gas. Compare gas only with its own history, not with other markets.
A quick worked example shows the scale. Suppose MCX natural gas is at ₹310 and the ATM straddle costs ₹30, close to 10% of the price, for options with about two weeks left. The market is pricing a move to roughly ₹280 or ₹340 by expiry. For NIFTY at 25,000, a straddle of a similar share of the price would be 2,500 points, far more than NIFTY options usually price for two weeks. Seen this way, it is clear why gas positions need to be sized so carefully: a normal week in gas is an extreme week for most other markets. The numbers here are only an illustration; the live straddle above shows what the market is pricing today.
How traders approach natural gas
- Small position sizes. Experienced traders size gas positions much smaller than equity or gold positions to allow for the swings.
- Trading around the storage report. Some trade the reaction; many simply avoid holding positions through it.
- Using options to define risk. Buying options limits the loss to the premium, but premiums are high and decay fast (see theta decay).
- Watching the calendar. The economic calendar and the trading hours guide help avoid surprises.
Risks and common mistakes
- Treating a low price as low risk. A price of a few hundred rupees per mmBtu hides a large lot value and large daily swings.
- Selling options without a hedge. A weather shock can multiply a short straddle's loss many times over.
- Holding through expiry without margin. In-the-money options can turn into futures positions.
- Comparing contract months directly. Winter and summer contracts trade at different levels for seasonal reasons, not because the market changed its mind.
For how crude oil differs, read the crude oil guide; for evening timings, read the MCX hours guide.