3.9What is liquidity?
1What is it?
Liquidity is how easily you can buy or sell a stock quickly without moving its price much.
2Why does it exist?
In a liquid stock you get in and out easily at a fair price. In an illiquid stock you may not find a buyer, or you may have to sell much lower.
3Real-life example
Gold jewellery is fairly liquid: many shops will buy it. A rare painting is illiquid: you might wait months for a buyer.
4Stock market example
Large stocks like HDFC Bank are very liquid: crores of rupees trade every minute, and the bid-ask spread (the gap between the best buy and best sell price) is tiny, often just a few paise. A tiny company might have a spread of ₹2 on a ₹50 stock, and few shares available.
5Calculation
Spread % = (Ask − Bid) ÷ Ask × 100
- Liquid stock: bid ₹1,950.00, ask ₹1,950.10 → 0.005%
- Illiquid stock: bid ₹48, ask ₹50 → 4%
Buying and immediately selling the illiquid stock costs you about 4%.
6Risks
- Illiquid stocks can trap you when you need to sell.
- Small orders can move illiquid prices a lot.
7Quick revision
- Liquidity = ease of trading at a fair price.
- Measured by volume and spread.
- Beginners should prefer liquid stocks.
8Knowledge check
Q1. What is the bid-ask spread?Show answer
The gap between the highest buy price and the lowest sell price.
Q2. Why are illiquid stocks risky?Show answer
You may not be able to sell quickly at a fair price.
Q3. Is a Nifty 50 stock usually liquid?Show answer
Yes.