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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 ?
Specificities, PPV, and NPV of MicroScan panels for the detection of ESBL production with disk diffusion as a reference method (isolates N=79).
Univariate analysis of factors influencing fecal carriage of ESBL producing Enterobacteriaceae in hospitalized and ambu-latory patients Hospitalized patients ESBL (+) ESBL (-) OR Lower n=66 n=204 Total parenteral nutrition 19 43 1.
The presence of multi-drug resistance was higher among ESBL producers and carbapenems remained the most effective drug against such isolates (Table II).
Double disk synergy method by any of the four disks with a disk spacing of 20 mm detected ESBL production in 95 per cent as compared to the reference standard.
He said he was planning to reopen an inquest on Mrs Ethel Emma Williams, from Telford, who died on May 29 this year at the Princess Royal Hospital because he has been told her death was attributable to ESBL.
The statement added: "Our investigations into the cross-infection have not yet identified how the ESBL E.
From the limited data available, CTX-M-15 appears to be the predominant ESBL in northern india (4,6-8).
pneumoniae (N=503) (N=548) Antibiotic Overall (range) Overall (range) Ampicillin 82 (65-90) 100 (-) Co-amoxiclav 39 (0-57) 62 (31-73) Cefuroxime 18 (0-33) 62 (31-72) Ceftriaxone/cefotaxime 7 (0-15) 57 (43-66) Cefepime 5 (0-14) 54 (50-64) Piperacillin-tazobactam 9 (0-23) 49 (26-67) Ciprofloxacin 16 (0-36) 39 (18-64) Levofloxacin 16 (0-36) 39 (28-64) Gentamicin 14 (0-32) 31 (0-43) Amikacin 6 (0-15) 25 (8-50) Ertapenem 2 (0-8) 2 (0-8) Imipenem 1 (0-6) 1 (0-1) Meropenem 1 (0- 6) 1 (0-1) % ESBL production 5 (0-11) 50 (33-59) Enterobacter spp.
Now experts have warned that extended spectrum beta-lactamases - known as ESBL - has almost certainly spread to every hospital in Scotland.
Health chiefs yesterday admitted they were almost powerless to stop the lethal ESBL bacteria from contaminating wards.
The hospital has refused to confirm reports that one patient with ESBL had died.