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An effective upper bound on prices achieved because of many willing sellers at that price level.

Resistance Level

In technical analysis, a price that a security does not, or only rarely, rise above. Technical analysts identify a resistance level by looking at past performance. When the security approaches the resistance level, it is seen as an indication to sell the security, which will increase the supply, causing the security's price to fall back below the resistance level. If there are too many buyers, however, the security rises above the resistance level. When this occurs, the price of the security will likely continue to rise until it finds another resistance level. It is also called the overhead resistance level. See also: Price ceiling, Support (Support level).


An increased supply of a security. Compare support.


Resistance, or resistance level, is the top of a stock's current trading range, and the point at which the price is higher than investors are willing to pay. As stockholders sell at resistance level, the stock price goes down because supply exceeds demand.

For example, if, on a repeated basis, as stock A's price reaches $60, stockholders begin to sell, then $60 is considered its resistance level. But a trading range isn't fixed and investor attitudes change, so the resistance level tends to move higher or lower over time.

If stock A rises to $63 without a surge of selling, the current resistance line has been breached. This may be the result of a rising market or a bullish assessment of the stock's value. On the other hand, if selling increases at $57, that may become the new resistance level.

Conversely, the level at which demand exceeds supply and investors typically buy a certain stock is called support. It's the point that's considered the bottom of a stock's current trading range.

Technical analysts use the concepts of resistance and support in anticipating future stock price movements.

References in periodicals archive ?
Mitral regurgitation is generally well tolerated during pregnancy due the to decrease in systemic vascular resistance (31).
A sharp decrease in systemic vascular resistance will result in profound hypotension and tachycardia (15).
Hypothyroidism often involves hypertension due to increased systemic vascular resistance, high cholesterol due to reduced hepatic clearance of LDL cholesterol, and renal insufficiency, presumably due to a hypodynamic circulation, they said.
Kyung-Hoon Choe, from Wonju College of Medicine in South Korea, measured Systemic Vascular Resistance Index (SVRI) and other hemodynamic parameters, heart rate, and blood pressure of 22 hypertensive patients.
It causes considerable reduction in systemic vascular resistance and arterial pressure 15% to 40% after iv induction with 2mg/kg.
There was no significant difference in the mean cardiac index or the mean systemic vascular resistance index between the two groups after surgery.
Systemic vascular resistance declined by 10% with amlodipine and dropped a further 5% with the addition of atorvastatin, the researchers said.
Sustained improvements in systemic vascular resistance, mean arterial pressure, and cardiac output were noted.
MCP influences heart rate and significantly changes systemic vascular resistance, thereby changing blood pressure as well as cardiac output.
The cardio vascular manifestations range from variable mean arterial pressure, reduction in stroke volume and cardiac output, with increased or decreased Systemic Vascular Resistance.