TIGERSOFT's Over-Bought and Over-Sold Conditions
        
 (c) 2013 www.tigersoft.com  All rights strictly reserved

              Over-bought and over-sold are terms meant to show that a stock, commodity,
              currency has either sold-off so much or risen so much that, at least, some kind of
              reversal "should" "normally" be expected soon.  This begs many questions.
            
              For example, how much of a reversal is one looking for?   Mostly TigerSoft
              traders are looking for moves longer than a few days.  Two-weeks to 6-months
              is good goal for traders looking at end-of-day data.   So, while we view
              end-of-day hourly charts, we are mostly interested in what daily charts
              can offer.  

              Prices may look "oversold" on an hourly chart but still be near the top on a weekly
              chart.   The hourly "oversold" condition will help the trader only if the uptrend
              in the longer-term chart continues.  One should therefore be cognizant of the
              status of a stock on the basis of the longer term chart, 5 year weekly or longer,
              as well as the Tiger Daily chart that goes back a year.  If you are a very short-term
              trader, having intra-day charts will be helpful, but it is not essential and can
              sometimes be mislading.

              On the basis of what indicators is "Over-Bought" and "Over-Sold" defined?

              1) The bottom of Price Trading Ranges show an "over-sold" condition.  The
              top of the trading range shows the "over-bought" condition.  EBAY shows
              an unusually well-tested set of parallel support and resistance lines.  Most
              trading ranges so not have so many swings in them without a breakout or
              breakdown.

EBAY.BMP (1094454 bytes)

              2) 
Tiger's Price upper and lower price bands on a daily chart are important.  But
              we know we must also be aware of the internal strength of a stock when the bands
              are reached.  We should also realize that flat-topped trading range breakouts
              will often send a stock up past the simple tagging of the upper band, just as a
              breakdown below well-tested support will often cause prices to drop below
              the lower band.  Head/shoulders patterns like a trading range breakdown
              usually bring too much weakness to use the lower bands, Stochastics, CCI
              or the RSI to identify a reliable over-sold condition.  See chart of CAT below.

GRC.BMP (1083630 bytes)

SSRI.BMP (1101654 bytes)


              3) Stochastic' Oscillators help.  They tell us how far up from the bottom to the top a stock
              in within its, say, 5-day range, or its 20-day range, or its 65-day range.  A stock
              might be expected to have more reversal potential when it is below the 20%-level
              in all three time periods, but this is not necessarily so.  A trader may prefer a
              short-term 5-day over-sold condition when the stock's momentum is still strong.

              In the chart below, the 20-day Stochastic Buy signals work nicely, while
              three of the 20-day Stochastic Sell signals are premature.  This shows that
              momentum can trump what are normally "overbought" Stochastic readings.
              See at the bottom of the screen the Stochastic oscillators.  The second blue
              one is a 3-day smoothed "slow" Pct-D Stochastic.  Falling below 20 and then
              rising above 20 gives the Buy signals. 

SPY.BMP (1106454 bytes)

                   Stochastic overbought and oversold Buys and Sells work best
                   as a team together when prices are locked in a trading range.
                   Tiger's automatic signals will tell you what length stochastic to use.

CAT.BMP (1113654 bytes) 

           4) The CCI Oscilator helps Index Option traders a lot.  They are especially
             interested in intermediate-term moves when the CCI (Commodity Channel Index)
             registers oversold and the trend is up, especially as defined by Peerless.
             When the Tiger Automatic Signals also contribute a reinforcing Buy, it's
             clear the uptrend has re-started.  If you trade index options, don't wait
             for a clinching signal.  Buy on weakness when the option premiums
             are lowest.

TNA.BMP (1094454 bytes)

              5) RSI (not to be confused with TigerSoft's Relative Strength tools)
              also shows over-bought conditions.  They work in a way that is similar
              to the CCI.   There is lot of writing about the RSI on the internet.  Buy
              the RSI dips below 30 in an uptrend.  Do not use the RSI moves over
              70 or even 80 to Sell.  See ADBE below.  The opposite is true for the
              stocks in a downtrend.  Use the RSI moves above 70 to sell, but do
              not use the moves below 30 to buy.

                       
    Uptrending Stock.  Use RSI Over-Sold Readings to Buy
ADBE.BMP (1094454 bytes)
              .:
             
Down-trending Stock.  Use RSI Over-Bought Readings to Sell Short

NEMRSI.BMP (1094454 bytes)