the market was also severely overbought short- and long-term.
Can you explain this to me?
of course.
'overbought' and 'oversold' signals are usually given by oscillators, a special kind of technical indicator.
oscillators measure something that is comparable to the intuitive notion of the 'momentum' of price. since a general rule of markets is 'what goes up must go down', we can use oscillators to see the magnitude of the net 'upness' versus the magnitude of the net 'downness' in a given time frame, and anticipate corrections based on their proportions.
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*1-month 6-hour scale*
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if the two oscillators are legible to you, the red splotches indicate periods of 'overbuying', where the net upness was high for a long period of time. notice how we have spent a lot of time in the overbought region in the mid- and long-term (mid-term circled in green, long-term not shown), and just left the overbought zone in the William's oscillator in the short-term (circled in blue).
further, we can interpret the current downward trending of both oscillators as a downward trend in 'price momentum', which both anticipated the sell-offs we just witnessed, as well as suggests that the market may be preparing for a major correction in the immediate future.
hope that was clear enough -- are you familiar with these indicators at all?
--arepo