Monthly Coppock Guide.afl
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- //------------------------------------------------------------------------------
- //
- // Formula Name: Monthly Coppock Guide
- // Author/Uploader: Brett Forrester
- // E-mail: brett@surewest.net
- // Date/Time Added: 2001-06-27 21:53:51
- // Origin: Stocks & Commodities V. 11:3 (125-126): The Coppock Guide by Tim Hayes
- // Keywords: Coppock, market bottoms, ROC, DJIA,
- // Level: basic
- // Flags: indicator
- // Formula URL: http://www.amibroker.com/library/formula.php?id=36
- // Details URL: http://www.amibroker.com/library/detail.php?id=36
- //
- //------------------------------------------------------------------------------
- //
- // One of the best megaphones of market action is the Coppock guide, a
- // long-term price momentum indicator that effectively filters out short-term
- // and
- //
- // intermediate-term market swings to issue a clear message on the market's
- // underlying long-term trend. Tim Hayes of Ned Davis Research reports on
- //
- // the success of this indicator.
- //
- // The Coppock guide, which was developed in the early 1960s by technician
- // E.S.C. Coppock, was designed as a guide by which to identify major
- //
- // market bottoms, with the specification that buy signals would be generated
- // when the 10-month smoothing dropped below zero and then reversed
- //
- // upward. Even though Coppock developed the index and buy rule well before
- // the arrival of computerized indicator analysis, the optimal buy rule
- //
- // determined after number crunching by our computers is not far off from
- // Coppock's original rule; the most profitable long positions since July 1957
- //
- // would have been generated by buying whenever the index dropped below 1.3
- // and then reversed upward.
- //
- // The Coppock guide is calculated by first determining the 14-month rate of
- // price change of the Dow Jones Industrial Average's (DJIA) monthly close,
- //
- // then adding that rate to the closing's 11-month rate of price change, and
- // finally smoothing the result with a 10-month front-weighted moving average.
- //
- // The Coppock guide is also an effective indicator of market tops, with sell
- // signals flashed when the index rises above 1.3, tops out and then drops by
- //
- // l l points. In fact, as shown in Figure 1 in the upper lefthand corner, an
- // investor following the indicator's signals would have profited in 90% of
- // the cases,
- //
- // earning 9.2% compounded annually, 70.4% better than the comparable per
- // annum return of 5.4% produced through a buy-and-hold approach over the
- //
- // same timeframe. Using this single indicator, an investor's $10,000
- // investment on July 31, 1957, would have grown to $223,152 by December 31,
- // 1992.
- //
- // OF PRACTICAL USE
- //
- // So, you may say, the hypothetical results look promising, but is the
- // indicator of any practical use right now? The answer is a resounding
- // affirmative. As
- //
- // can be seen on Figure 1, a long-term momentum divergence has been under way
- // since the DJIA's 1986 highs occurred without confirmation in the form
- //
- // of new highs on the Coppock guide, which instead remained below its 1983
- // high. Likewise, the DJIA's highs in 1987, 1989 and in 1992 all occurred
- // with
- //
- // the Coppock guide at successively lower levels.
- //
- // While the long-term divergence is a negative omen, so is the Coppock
- // guide's March 1992 high itself, as peaks in the Coppock guide have led, or
- // slightly
- //
- // lagged, 10 of the past 12 bull market tops (which are defined as a peak
- // following a rise of at least 30% or 15% after 155 days)(Figure 2). Among
- // the seven
- //
- // cases in which the Coppock guide led, the median lead time was 6.5 months.
- // And of the three lagging, only one (the peak following the bull market top
- // of
- //
- // September 1978) lagged by more than six months. The median for all 12 cases
- // has been a lead time of 3.4 months.
- //
- // ASSESSING THE MARKET
- //
- // The most significant implication of the current level on the Coppock guide
- // is that it flashed a sell signal with November 1992's close. To prevent a
- // sell,
- //
- // the DJIA would have had to close that month at above 3485. When assessing
- // the market, it's always a good idea to remember the old saying that the
- //
- // tape tells all. And what the tape is telling us by way of the Coppock guide
- // is that momentum has continued to wane, the market is tired and the uptrend
- //
- // is turning into a downtrend. So keep those warnings in mind as you monitor
- // the markets.
- //
- // Tim Hayes is the senior international strategist for Ned Davis Research and
- // writes the "Stock Market Strategy" and "International Currents"
- // newsletters.
- //
- // Ned Davis Research. PO Box 1287, Nokomis, FL 34274-1287.
- //
- // Figures 2 Copyright (c) Technical Analysis Inc.
- //
- //------------------------------------------------------------------------------
- /*
- Stocks & Commodities V. 11:3 (125-126): The Coppock Guide by Tim Hayes
- One of the best megaphones of market action is the Coppock guide, a long-term price momentum indicator that effectively filters out short-term and
- intermediate-term market swings to issue a clear message on the market's underlying long-term trend. Tim Hayes of Ned Davis Research reports on
- the success of this indicator.
- The Coppock guide, which was developed in the early 1960s by technician E.S.C. Coppock, was designed as a guide by which to identify major
- market bottoms, with the specification that buy signals would be generated when the 10-month smoothing dropped below zero and then reversed
- upward. Even though Coppock developed the index and buy rule well before the arrival of computerized indicator analysis, the optimal buy rule
- determined after number crunching by our computers is not far off from Coppock's original rule; the most profitable long positions since July 1957
- would have been generated by buying whenever the index dropped below 1.3 and then reversed upward.
- The Coppock guide is calculated by first determining the 14-month rate of price change of the Dow Jones Industrial Average's (DJIA) monthly close,
- then adding that rate to the closing's 11-month rate of price change, and finally smoothing the result with a 10-month front-weighted moving average.
- The Coppock guide is also an effective indicator of market tops, with sell signals flashed when the index rises above 1.3, tops out and then drops by
- l l points. In fact, as shown in Figure 1 in the upper lefthand corner, an investor following the indicator's signals would have profited in 90% of the cases,
- earning 9.2% compounded annually, 70.4% better than the comparable per annum return of 5.4% produced through a buy-and-hold approach over the
- same timeframe. Using this single indicator, an investor's $10,000 investment on July 31, 1957, would have grown to $223,152 by December 31, 1992.
- OF PRACTICAL USE
- So, you may say, the hypothetical results look promising, but is the indicator of any practical use right now? The answer is a resounding affirmative. As
- can be seen on Figure 1, a long-term momentum divergence has been under way since the DJIA's 1986 highs occurred without confirmation in the form
- of new highs on the Coppock guide, which instead remained below its 1983 high. Likewise, the DJIA's highs in 1987, 1989 and in 1992 all occurred with
- the Coppock guide at successively lower levels.
- While the long-term divergence is a negative omen, so is the Coppock guide's March 1992 high itself, as peaks in the Coppock guide have led, or slightly
- lagged, 10 of the past 12 bull market tops (which are defined as a peak following a rise of at least 30% or 15% after 155 days)(Figure 2). Among the seven
- cases in which the Coppock guide led, the median lead time was 6.5 months. And of the three lagging, only one (the peak following the bull market top of
- September 1978) lagged by more than six months. The median for all 12 cases has been a lead time of 3.4 months.
- ASSESSING THE MARKET
- The most significant implication of the current level on the Coppock guide is that it flashed a sell signal with November 1992's close. To prevent a sell,
- the DJIA would have had to close that month at above 3485. When assessing the market, it's always a good idea to remember the old saying that the
- tape tells all. And what the tape is telling us by way of the Coppock guide is that momentum has continued to wane, the market is tired and the uptrend
- is turning into a downtrend. So keep those warnings in mind as you monitor the markets.
- Tim Hayes is the senior international strategist for Ned Davis Research and writes the "Stock Market Strategy" and "International Currents" newsletters.
- Ned Davis Research. PO Box 1287, Nokomis, FL 34274-1287.
- Figures 2 Copyright (c) Technical Analysis Inc.
- Figure 1 displayed here