הנה שני מאמרים מהבלוג של thomas bulkowski שכתב כמה ספרים על תבניות צ'רטיסטיות.
הוא נחשב למומחה עולמי בניתוח טכני ובמיוחד בתבניות צ'רטיסטיות.
הנה הלינקים כי לא העליתי את הגרף:
http://thepatternsite.com/Blog.html#P28
http://thepatternsite.com/Blog.html#P27
הנה המסקנות האחרונות המאוד מעניינות שלו:
Tuesday, 1/27/2009. Tutorial Tuesday: Do Chart Patterns Still Work?
I spent the afternoons of last week clicking on hundreds of triangle chart patterns, doing research on what works and what has ceased to work. The above chart shows the results of that effort.
Displayed are three error rates for chart patterns with upward breakouts: 10%, 20%, and 40%. Those are arbitrary limits chosen to show how chart patterns perform over time. I used almost 14,000 chart patterns from 1991 to 2008 and measured the rise from the close the day before the breakout to the ultimate high, which is the highest peak before price tumbled at least 20% or before price closed below the bottom of the chart pattern. The error rates show how often price fails to rise by at least 10%, 20%, or 40% after the breakout before a trend change.
The chart shows a lot of information for just three lines. First, look at the trend. In all cases, the lines climb over time. That means chart patterns that used to work in 1991 now fail three times as often. For example, the 1991 ten percent error rate was 11%. That means 11% of breakouts had rises of less than 10%. By 2007, the rate had peaked at 44%. On one dollar invested in 1991, it is now four times as difficult to make the same 10%. The 20% line shows a near triple over the same time, from 22% to 64%.
Look at the bear market in 2000 to 2002. In those years, chart patterns with upward breakouts showed higher failure rates. That makes sense since the general market was tumbling. The price rise after an upward breakout could be expected to carry less far and that’s what the chart shows.
Look at the height of the three lines. This shows how often you can expect a chart pattern to post a rise of 10%, 20% or 40% after the breakout. For example, in 2007, 84% of chart patterns failed to show post breakout rises of at least 40%.
Instead of taking discrete points, let’s look at the average of the numbers. Comparing the 1990s bull market shows an average failure rate of 14%. In the bull market years of 2003 to 2007, the failure rate had climbed to 28% -- a double of what it used to be.
If you think it is more difficult to make money in today’s markets using chart patterns, you’re not dreaming.
For a complete review of this study, including the results for downward breakouts, click on the link.
-- Thomas Bulkowski
Wednesday, 1/28/2009. Patterns Fail. What Now?
Kurt asked the following questions in an email, following the disclosure yesterday that chart patterns fail more often than they used to.
If failure rates are high among chart patterns should a trader consider them obsolete? and Should a trader stop studying chart patterns all together?
If you are working on your car and the chisel you’re using on a screw is not working, then look for another tool. Perhaps a screw driver would work better. Each tool has its application. So it is with chart patterns. Failure rates have increased to the point where I would not recommend trading them by themselves. In other words, just because you get a breakout above the top of the neckline of a head-and-shoulders bottom is not a good enough reason to buy the stock. You need to confirm the purchase with other indicators.
I have been working for over a month on testing indicators with chart patterns and am finding success. It is premature to give you the exact details because the research is incomplete and I have veered onto other projects. If the research pans out, I will discuss it here and will release the details in the research portion of this website, just as I do all of my findings.
I used a screw driver to remove the remains of a valve cover gasket from my car’s engine this summer. Clearly, the screw driver was not meant to act as steel wool or a razor blade, but it did the trick and worked best. Like the screw driver, chart patterns can be beneficial to your trading. Chart patterns appear when the stock moves sideways -- consolidates after a trend. They give indications as to which direction price may move. Just because you trade a false breakout upward and price collapses back into the pattern does not mean price is destined to drop. It may mean that it will take more time before the stock is ready to move up.
You may want to investigate busted patterns. In my paperback book, Getting Started in Chart Patterns
, pictured on the right, I devote an entire chapter to busted patterns. Using the Search feature of this website shows 24 mentions of busted patterns but I have not had the time to post my findings on them. You will have to read the book. In short, look for patterns that break out in one direction before reversing and then breaking out in the opposite direction. The new direction often, but not always, leads to a strong move.
You can also score your chart pattern. Those pages are adapted from my book, Trading Classic Chart Patterns
, pictured on the left. The method looks at price, volume, and fundamentals (market cap) for hints that often indicate a profitable chart pattern. You add up the scores for those indications and if the result is above 0, then it suggests a more profitable move than do those with scores below 0.
These two methods also may not work as well now as they have in the past, so do your own research. Try combining indicators that you like with chart patterns. They may help filter out the duds from the ones that will soar. That is what I am doing in my testing.
-- Thomas Bulkowski
הבן אדם שחי יותר מכולם אולי את התבניות מגלה סקפטיות, וממליץ היום לשלב את התבניות עם אינדיקטורים.
לא יאומן !!!
אין לי מושג כמה ספרים הוא מכר, אבל המסקנה היום היא שזה כבר לא כ"כ עובד, וצריך לשלב עם אינדיקטורים.
ולכן, יכול להיות שהוא יוציא ספר חדש שמשלב את שניהם וזו תהיה "הסופר שיטה" כדי להרוויח כסף בשוק ההון...
לפחות זה מה שהוא אומר היום, יכול להיות שהוא יגיע למסקנה שונה עוד 3 שנים.
הוא מגיע לאותה מסקנה שהגעתי אליה לאחרונה וזה רק מחזק אותי בדעה שצריך להתייחס לגרפים בצורה פשוטה, להפסיק למתוח אלפי קווים שיוצרים כל מיני תבניות...
מה שאני אומר בודאי ובודאי נכון כלפי הסוחרים וגם המנתחים הטכניים למיניהם, כדאי שיירגעו עם כל התבניות שלהם.
שימו לב שאני לא מביע הסתייגות כלפי הנרות אלא כלפי התבניות !!!
בקיצור, כדאי שנתמקד בתבניות הפשוטות שבאמת מגלות את הפסיכולוגיה של המשקיעים, ולא בכל מיני "ציורים" שיכולים לבלבל ולגרום לסוחר להיכנס לפוזיציות לא נכונות !!!!!
עשיתי לך את היום איתי, נכון...
הוספת תגובה על "חובה למנתחים הטכניים לקרוא את זה !!!"
נא להתחבר כדי להגיב.
התחברות או הרשמה