How to judge when the internal market volume exceeds the external market volume? Mastering this logic will keep you from feeling lost in short-term trading.

Many beginners entering the stock market get overwhelmed at first glance when opening trading software, confused by terms like five-level quotes, internal and external volume. Actually, behind these data lies a simple logic—who is more eager to complete the trade.

What does it mean when internal volume exceeds external volume?

To understand internal and external volume, first clarify the two roles in the market.

Sellers want to raise the price (ask price), buyers want to lower it (bid price). When a trade occurs at the bid price, it is recorded as internal volume, indicating that sellers are willing to lower prices to meet buyers, showing they are more eager; conversely, when a trade occurs at the ask price, it is recorded as external volume, indicating buyers are more eager.

For example: TSMC’s quote shows a bid of 1160 yuan/1415 shares, and an ask of 1165 yuan/281 shares. If you immediately place a sell order at 1160 for 50 shares, these 50 shares are internal volume—you actively accept the lower bid price. Conversely, if someone immediately buys 30 shares at 1165, these 30 shares are external volume.

When internal volume exceeds external volume, it indicates clear selling pressure in the market—sellers are more aggressive in dumping, which is usually a bearish signal.

The buy and sell forces in the five-level quotes

The five-level quotes clearly show the market’s buy and sell sides—green on the left for the top five bid prices, red on the right for the top five ask prices.

Bid one (203.5/971 shares) is the current highest bid, ask one (204.0/350 shares) is the lowest ask. These are just order data and may not necessarily be executed—main players can withdraw orders at any time.

If you observe that during a certain period, the internal volume is higher than external volume, and the stock price is also falling, it indicates that sellers are actively selling off, driving the price down, which is a typical bearish signal.

How to properly use internal and external volume ratios to avoid pitfalls

Internal-to-external volume ratio = internal volume ÷ external volume

• Ratio > 1: internal volume higher than external volume, indicating strong seller activity, market tends to be bearish
• Ratio < 1: internal volume lower than external volume, indicating strong buyer activity, market tends to be bullish
• Ratio = 1: balanced buying and selling forces, market is in stalemate

But there’s a trap—internal volume exceeding external volume doesn’t necessarily mean the stock price will fall.

Combine with price movement:

• Internal volume high, external volume low, and price still rising? Beware of “false bearishness”—main players may be deliberately placing buy orders to induce retail investors to sell, secretly accumulating shares. If bid one to bid three orders keep stacking, the price may continue to rise afterward.
• External volume high, internal volume low, but the price doesn’t rise and instead falls? This is a “false bullish”—main players are placing sell orders to trick retail investors into buying, while secretly offloading shares. When ask one to ask three orders keep increasing, the price may suddenly drop afterward.

Support and resistance zones determine your trading points

Looking at internal volume alone isn’t enough; you also need to consider support zones and resistance zones.

When the price drops to a certain level and can’t go lower, it indicates strong buying interest at that level—this is a support zone. Buyers believe the price is cheap and expect a rebound, so investors might consider going long.

Conversely, if external volume is strong but the price is stuck above a certain level, that is a resistance zone. Usually, this is where trapped investors bought at higher prices, and as the price approaches, they rush to sell to cut losses. When selling pressure accumulates sufficiently, even strong buying can’t break through.

Practical strategies:

• Buy at support zones, sell at resistance zones during upward moves
• If the price breaks below support or above resistance, it often leads to a one-sided trend

The true power and limitations of internal volume indicators

The advantage of internal volume exceeding external volume is high immediacy—data and trades update simultaneously, quickly reflecting the active intentions of buyers and sellers. Plus, the concept is simple and easy for many beginners to grasp.

But the problem is obvious—susceptible to manipulation. Through routines like “placing orders—active trades—canceling orders,” main players can create a false appearance of internal volume surpassing external volume; internal and external volume only reflect current trades and can’t determine long-term trends; relying solely on this indicator can easily lead to wrong decisions.

It must be combined with trading volume, technical analysis, and fundamental analysis to be reliable.

Practical advice

When internal volume exceeds external volume, don’t rush to short sell. Observe whether:

• The price is truly declining?
• Trading volume is increasing or decreasing?
• Support zones are holding?
• Main players’ order structures are abnormal?

Only when multiple signals point in the same direction can your chances of success improve. No single indicator can do everything in investing; you also need to study company fundamentals, macroeconomic environment, and your own risk tolerance. Doing thorough homework is the key to long-term profits.