What is Market Depth? How to Read Level 2 Data in NSE
Market depth, also called Level 2 data, shows you the pending buy and sell orders for a stock at different price levels. Instead of just seeing the best bid and best ask, market depth lets you see the top 5 (or 20, with a subscription) price levels on both the buy and sell side, along with the quantity available at each level.
If the stock quote is like seeing the price tag on a single item in a shop, market depth is like seeing the entire shelf with all available items and their prices. It tells you not just the current price, but how much demand and supply exists at nearby prices.
How to read market depth?
Market depth is displayed as two columns. The left side shows bid orders (buyers) ranked from highest to lowest price. The right side shows ask orders (sellers) ranked from lowest to highest price. Each row shows a price level and the number of orders and total quantity at that level.
| Bid Qty | Bid Price | Ask Price | Ask Qty |
|---|---|---|---|
| 5,000 | Rs.1,598 | Rs.1,600 | 3,200 |
| 8,000 | Rs.1,597 | Rs.1,601 | 4,500 |
| 12,000 | Rs.1,596 | Rs.1,602 | 6,000 |
| 3,500 | Rs.1,595 | Rs.1,603 | 2,800 |
| 7,000 | Rs.1,594 | Rs.1,604 | 5,100 |
In this example, the best buyer is willing to pay Rs.1,598 for 5,000 shares. The cheapest seller wants Rs.1,600 for 3,200 shares. The spread is Rs.2. If you look deeper, there is strong buying support at Rs.1,596 with 12,000 shares, suggesting that level might act as a floor.
Why is market depth useful?
Market depth helps you understand the strength of buying and selling interest beyond the surface price. A stock might show Rs.100 as the best bid, but if there are only 100 shares at that level and 50,000 shares at Rs.95, the price could drop quickly if selling pressure increases. Without market depth, you would not see this vulnerability.
For large order placement, market depth tells you how much you can buy or sell without moving the price significantly. View market depth on Stockk at stockk.trade/products/equity.
Investments in securities market are subject to market risks. This article is for educational purposes only.
Frequently Asked Questions
Is the market depth I see on my broker's platform complete?
Standard market depth shows the top 5 bid and ask levels. NSE offers a paid full depth feed showing the top 20 levels. Some broker platforms provide this enhanced depth as a premium feature. For most retail traders, the top 5 levels are sufficient to gauge the immediate supply-demand balance.
Can market depth be misleading?
Yes. Large orders can be placed and cancelled quickly, a practice called spoofing. A trader might place a large buy order at a lower level to create the impression of strong demand, then cancel it once the price moves. While exchanges monitor for such manipulation, it does occur, especially in less liquid stocks.
How does market depth differ from a stock chart?
A stock chart shows historical price movements over time. Market depth shows the current pending orders at this exact moment. Charts are backward-looking. Market depth is forward-looking in the sense that it shows what buyers and sellers are willing to do right now. Both together give a more complete picture.
Should I use market depth for making investment decisions?
Market depth is most useful for short-term trading decisions, particularly for timing entries and exits and for understanding liquidity. For long-term investors making delivery purchases, market depth has limited relevance because short-term order book dynamics do not affect a stock's value over years.
What does it mean when one side of the depth has much more quantity?
If the bid side has significantly more quantity than the ask side, it suggests strong buying interest. If the ask side is much heavier, it suggests more selling pressure. However, this is a snapshot and can change within seconds. Do not make decisions based solely on a single moment's market depth.
Investments in securities market are subject to market risks. This article is for educational purposes only and does not constitute investment advice.
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