Bid-ask spreads and liquidity of markets are key considerations for the transaction of securities. In periods of strong trading activity, an increase in participation may impact the order flow, execution speed and the spread between bid and offer. Knowing these can provide the investor with an insight into market activity and allow them to make informed decisions when placing orders.
What is Market Liquidity?
Market liquidity is defined as the ease with which a security may be converted to cash without substantial price changes. The more liquid the security, the more transactions can be made and the more buyers and sellers there will be.
Investors using trading apps can generally view market depth and price movements to assess liquidity before placing an order. Lower liquidity can make it harder to execute large orders at the desired price and may widen the difference between consecutive trade prices.
What is a Bid-Ask Spread?
The bid-ask spread refers to the gap between the highest price that a trader buying a stock is willing to pay and the lowest price that a seller of that stock is willing to settle for.
For instance, if the top bid price for a stock is ₹500 and the bottom ask price is ₹501, then the spread is ₹1. A wide spread would normally be a sign of poor liquidity or poor understanding whereas a narrow spread would mean that the liquidity is good.
Why do Spreads Change During Peak Hours?
Peak hours can bring a higher number of market participants and greater order activity. When more buyers and sellers are present, the order book may contain more competing bids and offers.
This can result in narrower spreads for actively traded securities. However, peak activity does not automatically mean every stock will have a narrow spread. Sudden news, sharp price movements or temporary imbalances between buyers and sellers can cause spreads to widen.
Understanding the Opening Session
The beginning of the trading day can experience heightened activity as investors respond to overnight developments, global market movements and company-specific announcements.
During this period, prices may adjust rapidly as new orders enter the market. The opening price discovery process can therefore be accompanied by increased volatility.
Liquidity During the Middle of the Session
After the initial market activity settles, trading conditions may become more stable for many actively traded securities. However, liquidity can vary significantly between stocks and market segments.
A large, actively traded company may continue to have substantial orders throughout the session, while a less frequently traded stock may show limited activity.
How the Order Book Helps Investors
An order book displays available buy and sell orders at different prices. It can help investors understand the immediate supply and demand around a security.
The best bid represents the highest visible buying price, while the best ask represents the lowest visible selling price. The difference between these prices forms the current bid-ask spread.
A deeper order book can indicate greater visible liquidity, but investors should remember that displayed orders can change or be cancelled. The order book should therefore be treated as market information rather than a guarantee of execution.
Market Orders versus Limit Orders
The type of order used can influence execution. A market order generally prioritises execution, while a limit order specifies the maximum purchase price or minimum selling price acceptable to the investor.
During periods of rapid price movement, market orders may execute at prices different from the most recently displayed price. This can happen when available orders at the quoted level are insufficient.
Limit orders can provide greater price control, although execution is not guaranteed if the market does not reach the specified price.
Monitoring Liquidity Before Placing Larger Orders
In the stock market, investors placing relatively large orders should pay closer attention to liquidity. If the available quantity at the best bid or ask is limited, a large market order may be executed across several price levels.
This can create a difference between the expected execution price and the actual average execution price. The effect can be more noticeable in securities with lower trading volumes.
Conclusion
The efficiency of the trading process into and out of the market is affected by market liquidity and the width of bid-ask spreads. The number of participants may increase during peak hours but this can affect the spreads due to volatility, news and order imbalance. Having visibility into the order book, selecting appropriate order types, and evaluating the liquidity can help with order execution. Tools offered by a platform like 5paisa enable investors to keep track of the market prices and trading conditions and make informed decisions based on their investment goals and risk appetite.
