Tick Size and its Impact

Tick size is the minimum price increment by which the quoted price of a commodity futures contract can move on the exchange. If the tick size for a contract is Rs 0.05, the price can only be quoted as 10.00, 10.05, 10.10, and so on.

The concept exists to avoid overly granular price quotes that would increase transaction costs and reduce market efficiency. By standardising the price steps, exchanges ensure orderly trading and easier calculation of margins and settlements.

For the NISM exam, tick size frequently appears in multiple‑choice questions that ask you to identify the correct price movement or to compute the monetary impact of a price change.

• Minimum price fluctuation – the smallest change allowed in the contract price.
• Uniformity – all market participants trade with the same price granularity, which simplifies order matching.

SEBI, through the Commodity Derivatives Market Regulations, mandates that each commodity contract must have a tick size that is a rational fraction of the contract's price range. The exchange (MCX, NCDEX, etc.) proposes a tick size based on historical volatility and average daily price movement.

The proposed tick size is rounded to the nearest paise (₹0.01) and must be approved by SEBI. Highly volatile commodities like crude oil may have larger tick sizes (e.g., ₹0.10) compared to less volatile ones such as soybean (₹0.01).

Exam‑wise, you may be asked to identify the correct tick size for a given commodity or to justify why a particular tick size is appropriate based on volatility considerations.

The tick value tells you the monetary impact of a single tick movement on your position. If a Gold futures contract moves from ₹50,000.00 to ₹50,000.05, the price has moved one tick, resulting in a profit or loss of ₹0.05 per kilogram.

Because the contract size is fixed, the tick value is constant for the life of the contract. This simplifies profit‑loss calculations and is a frequent topic in NISM mock tests.

Remember to multiply the tick value by the number of ticks the price moves to obtain the total monetary change. This step is often tested in scenario‑based questions.

A larger tick size reduces the granularity of price movements, which can lower transaction costs but may increase the minimum loss or profit per move. Conversely, a very small tick size allows finer price discovery but can increase the number of order entries and market noise.

From a margin perspective, exchanges calculate the initial margin based on the contract's price volatility. A larger tick size often leads to higher volatility estimates, resulting in higher margin requirements.

Exam candidates should note that tick size influences liquidity: contracts with excessively small ticks may see thin order books, while appropriate tick sizes attract more participants and tighter spreads.

To determine the profit or loss on a futures position, first calculate the number of ticks the price has moved, then multiply by the tick value and the number of contracts held.

Formulaically, Profit/Loss = (Number of Ticks) × Tick Value × Number of Contracts. This approach eliminates the need to work with large price numbers and reduces arithmetic errors in the exam.

Typical exam questions provide the entry price, exit price, contract size and ask for the monetary result. Applying the tick‑based method is faster and aligns with how clearing houses compute settlement amounts.

SEBI periodically reviews tick sizes to align with market conditions. When volatility spikes, the regulator may increase the tick size to curb excessive price swings. Conversely, a reduction may be introduced to improve price granularity for highly liquid contracts.

Any change is announced through a circular and becomes effective from the next trading day. Existing open positions are re‑valuated using the new tick size, which can affect margin calls and profit calculations.

For the exam, remember that a tick‑size revision does not alter the contract size; only the price increment changes. Questions may ask you to recalculate tick value after a regulatory amendment.