What is Tick Size?

Tick size is the smallest permitted price movement for a financial instrument. If a stock has a tick size of ₹0.05, it may move from ₹100 to ₹100.05 or ₹99.95, but not to ₹100.03.

• Exchanges determine the tick size for each instrument.
• Tick size affects order placement, liquidity, bid-ask spreads, and risk calculations.
• Different securities and asset classes may have different tick sizes.
• Tick value shows the monetary impact of one tick movement.
• Tick trading focuses on small price movements during a trading session.

• Transaction costs and rapid price changes can increase trading risk.

  
  
  

Tick trading works by tracking the smallest permitted price movement of a financial instrument. This minimum movement, known as the tick size, may vary across exchanges, securities, and asset classes.
For example, suppose the shares of ABC Ltd. are trading at ₹10 on the National Stock Exchange and have a tick size of ₹0.05. The next valid price may be ₹10.05 if the share price rises or ₹9.95 if it falls. A price such as ₹10.03 would not be valid because it does not follow the prescribed increment.
Tick size therefore determines the price levels at which traders can place orders. It also affects price movements, bid-ask spreads, liquidity, and trade execution.
 

Tick trading depends on several factors that determine how orders are placed and how price movements are measured.

1. Tick size as a measurement unit

In tick trading, tick size acts as the basic unit for measuring price movements. Traders track changes in these fixed increments to assess minor fluctuations in an asset’s price and identify possible trading opportunities. 

2. Precision and execution speed

Tick traders monitor small and short-lived price movements. This requires accurate order placement and close observation of the market. Faster execution may help, but it cannot guarantee a favourable price. The market may change before an order is matched.

3. Scalping opportunities

Scalping involves attempting to earn from small price movements. Traders may monitor the difference between the highest bid and the lowest ask. However, the spread may change quickly, and an order may remain unexecuted. Prices may also move against the trader.

4. Algorithmic and high-frequency trading

Tick trading may involve algorithmic strategies and high-frequency trading (HFT). Automated systems use predefined rules to place and execute multiple orders quickly, often responding to small price differences in the market.

Tick trading depends on liquidity, execution quality, costs, technology, and risk management. Since expected gains may be small, even minor costs or delays can affect the result.

1. Market liquidity

Liquidity shows how easily an instrument can be bought or sold. Tick trading may be difficult in securities with low volume or limited order-book depth.
In less liquid markets, the bid-ask spread may widen. Traders may also struggle to exit at the intended price.

2. Transaction costs

Frequent trades may involve brokerage, Securities Transaction Tax, GST, exchange charges, stamp duty, and other costs.
Even when individual trades generate small gains, cumulative expenses can reduce overall profitability. Traders should calculate the approximate break-even movement before placing an order.

3. Technological requirements

Tick trading may require a stable internet connection, accurate price feeds, and a responsive trading platform.
Technical delays, system errors, or connectivity problems may affect execution. Technology can support trading, but it cannot remove market risk.

4. Risk management

Prices can move sharply during volatile periods. A trader targeting a few ticks may face a much larger loss if the market moves in the opposite direction.
Position limits, stop-loss orders, daily loss limits, and predefined exit rules may help control exposure. However, stop-loss orders may execute at a different price during sudden market movements.
 

In futures trading, tick size is the minimum permitted price movement of a futures contract. The applicable value depends on the contract specifications set by the exchange.
Suppose a futures contract has a tick size of ₹0.05. Its price may move from ₹500 to ₹500.05 or ₹499.95, but not to ₹500.03.
Tick size should not be confused with margin. Margin is the amount required to open or maintain a futures position. It depends on contract value, volatility, and exchange risk parameters.
Tick size affects how precisely you can place an order. The monetary impact of one tick depends on the contract quantity.
 

In forex trading, tick size is the smallest permitted movement in the quoted price of a currency pair or currency derivative.
It affects entry prices, exit prices, stop-loss levels, and profit targets. The applicable increment depends on the currency pair, contract, and trading venue.
Smaller tick sizes allow orders to be placed at more precise levels. However, they do not automatically increase or reduce volatility.
Currency trading also carries exchange-rate risk and leverage risk. Economic announcements and geopolitical developments may cause rapid price movements.
 

In options trading, tick size is the minimum permitted change in an option premium.

For example, if an option has a tick size of ₹0.05, valid premium levels may include ₹10, ₹10.05, ₹10.10, and ₹10.15. A premium of ₹10.03 would not be valid.

Tick size affects:

• Order precision: It determines the valid premium levels for placing an order.
• Bid-ask spread: Smaller increments may allow closer price quotes.
• Execution: An order must match a permitted price and available counterparty.
• Strategy adjustment: Tick size affects how positions are entered, modified, or closed.

• Profit and loss: The financial effect depends on the lot size.

  
  

Option premiums are also affected by the underlying price, strike price, time to expiry, and implied volatility. Tick size only determines the minimum price increment.

Tick trading is directly based on the minimum permitted price increment. Tick size determines where traders can place orders and how they calculate gains or losses.

1. Precision in decision-making

Tick size creates fixed price levels for entering and exiting positions. For example, if the tick size is ₹0.05, an order may be placed at ₹50.05 or ₹50.10, but not at ₹50.07.

2. Setting targets and stop-loss orders

Profit targets and stop-loss prices must follow the permitted tick size. If the entry price is ₹100, the tick size is ₹0.05, and the target is four ticks higher, the target price would be ₹100.20.

3. Measuring returns and risks

Traders can convert tick movements into monetary values using the traded quantity.

Tick value = Tick size × Quantity

For example, a tick size of ₹0.05 for 500 shares produces a tick value of ₹25. A four-tick movement would equal ₹100 before transaction costs.

4. Adapting to market conditions

The same number of ticks may have different meanings under different market conditions. Five ticks may occur slowly in a stable market or within seconds during a volatile session. Traders must consider liquidity, trading volume, spreads, and market depth along with tick size.

Tick size affects how prices are quoted and how orders interact in the market.

• Order validity: Orders must follow the applicable price increment.
• Price discovery: Tick size determines the levels at which buyers and sellers compete.
• Liquidity: Smaller increments may create more quoting levels.
• Bid-ask spread: The minimum spread is generally linked to one tick.
• Risk calculation: Tick size helps measure movements and set valid order levels.
• Transaction costs: Small price movements may not cover trading expenses.
• Contract valuation: Tick size and contract quantity determine tick value.

• Exchange compliance: Orders at invalid price levels may be rejected.

  
  

Tick size is an execution measure. It does not predict whether the market price will rise or fall.

Several features explain how tick size works across financial markets.

1. It creates fixed price increments

Tick size establishes the smallest valid difference between two quoted prices. This creates an organised price ladder for market participants.

2. It differs across instruments

Tick size is not the same for every asset. Equities, futures, options, currencies, and commodities may use different increments.
It may also differ across securities within the same asset class.

3. It is specified by the exchange

Stock exchanges publish the applicable tick sizes under the regulatory framework. Traders should check the relevant security or contract details before placing an order.
SEBI regulates the securities market, while exchanges specify operational trading requirements such as permitted price increments.

4. It influences liquidity and spreads

A smaller tick size may allow closer price quotes and narrower bid-ask spreads. However, very small increments may divide orders across several price levels.
The actual effect depends on liquidity, market depth, and trading activity.

5. It may change over time

Exchanges may revise tick sizes according to changes in security prices or market structure.
Traders should therefore check current exchange specifications instead of relying on older values.

6. It may affect trading behaviour

Market participants may place orders one or more ticks away from the current bid or ask. Automated systems may also react to movements of a specific number of ticks.
The importance of each tick depends on the security’s price, trading volume, and volatility.
 

Tick size and tick value are related but refer to different concepts.

Suppose a futures contract has a tick size of ₹0.05 and a contract quantity of 1,000 units.

• Tick size: ₹0.05
• Contract quantity: 1,000 units

• Tick value: ₹50

  
  

If the contract moves by six ticks, the gross monetary movement would be ₹300 per contract. This does not include brokerage, taxes, exchange charges, or slippage.

Tick size is the smallest permitted price movement for a financial instrument. It affects valid order prices, bid-ask spreads, liquidity, execution, and risk calculations. Since tick sizes may differ across stocks, futures, options, currencies, and commodities, traders should check current exchange specifications before placing an order. Understanding tick size can improve order accuracy, but it cannot predict market direction or eliminate losses caused by volatility, leverage, low liquidity, or execution delays.