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Author Topic: Empirical Results on Technical Analysis  (Read 26596 times)
jag82
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« Reply #60 on: October 22, 2005, 05:59:59 AM »

I guess we can continue our debate till the end of time, and it will never be conclusive. If it could, there will be no more debate on EMH or controversies about it. I've said all i could about the points against it, so i wouldn't post further. A few of my points remained unanswered, but its ok.

Note I never once said EMH is wrong, but it's not flawless.  It's just a method of the degree of efficiency. It can be near or almost efficient but not 100%. Heisenberg uncertainty principle state so. With human and computing error, along with other factors, 100% efficiency is impossible. Similarly in engineering, you can never find a machine that is 100% efficient, due to energy loss through heat and sound etc etc. Near 100% efficiency. Possible. Totally? No. Also you can say uncertainty contribute to randomness too. Again the issue is the degree of it. Sometimes it's very haphazard ( which is why i never place much emphasis on chart patterns ), sometimes it's strangely predictable (market fall during crisis. Happens almost all the time). That is why when i say using price/volume intepretation analysis, it is possible to time the market with a good probabilty of it happening. Similarly, Warrant Buffett has his own method of calculating the intrinsic value of his stock. High probability but not precise for sure, with room for error. Again i reiterate the quote by him, it's better to be approximately right than accurately wrong.

I think vision3001 and alfiee is not trying to reject EMH totally. The whole point of this debate is whether its either the market is efficient or not, which you state it is, and is a clear cut black and white issue, with no place for the shade of grey or in-between. That is what we are arguing against, for the presence of degreeness in market efficiency, which is in essense not refuting EMH totally. To us, it's not a world of 2 extremes, either black or white. That's my point.
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« Reply #61 on: October 22, 2005, 06:04:08 AM »

http://en.wikipedia.org/wiki/Efficient_market_hypothesis

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It is a common misconception that EMH requires that investors behave rationally. This is not in fact the case. EMH allows that when faced with new information, some investors may overreact and some may underreact. All that is required by the EMH is that investors' reactions be random enough that the net effect on market prices cannot be reliably exploited to make an abnormal profit. Under EMH, the market may, in fact, behave irrationally for a long period of time. Crashes, bubbles and depressions are all consistent with efficient market hypothesis, so long as this irrational behavior is not predictable or exploitable.
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« Reply #62 on: October 22, 2005, 06:06:48 AM »

Quote from: jag82
That is what we are arguing against, for the presence of degreeness in market efficiency, which is in essense not refuting EMH totally. To us, it's not a world of 2 extremes, either black or white. That's my point.


I tend to agree with carrotcake about this. There are only two ways to see it (black & white):

BLACK = EMH says TA doesn't work. TA cannot be used to make profits.
WHITE = TA works and EMH is thus wrong. TA can be used to make profits.
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« Reply #63 on: October 22, 2005, 06:10:33 AM »

Awww shucks. Ok that's the end of this debate for me. To each his own.
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« Reply #64 on: October 22, 2005, 06:12:32 AM »

Oh yes. Its not only TA camp who are against EMH, but FA camp too. No more from me.
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« Reply #65 on: October 22, 2005, 06:16:02 AM »

Quote from: jag82
Awww shucks. Ok that's the end of this debate for me. To each his own.


Yep, your flawed understanding of EMH comes from common misconception.

I think carrotcake doesn't know enough of EMH too and therefore failed to explain your mistake clearly.

Glad I was able to help.
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« Reply #66 on: October 22, 2005, 06:26:51 AM »

Quote from: jag82
Oh yes. Its not only TA camp who are against EMH, but FA camp too. No more from me.


Some tactics commonly lumped together with "FA" aren't really FA but TA.

For example "value investing" and running businesses like Buffet does is probability not really an "analysis" or any type but belongs to business skills. On the other hand, P/E ratios and other data may in fact be TA.

On top of that, some EMH efficiency forms DOES allow FA to work. Any FA that requires running the actual business or meeting with high level members will probably fall into the FA that is allowed.

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Even though many fund managers have consistently beaten the market, this does not necessarily invalidate strong-form efficiency. We need to find out how many managers in fact do beat the market, how many match it, and how many underperform it. The results imply that performance relative to the market is more or less normally distributed, so that a certain percentage of managers can be expected to beat the market. Given that there are tens of thousand of fund managers worldwide, then having a few dozen star performers is perfectly consistent with statistical expectations.
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« Reply #67 on: October 22, 2005, 06:47:31 AM »

Hmm..the urge to respond is strangely seductive.

I can quote you a local example of a strict follower of fundamentalals against EMH. Wallstraits.com

George Soros of Quantum Fund, (Hedge, 1994) "In certain circumstances, financial markets can affect the so-called fundamentals which they are supposed to reflect. When that happens, markets enter into a state of dynamic disequilibrium, and behave quite differently from what would be considered normal by the theory of efficient markets."

Warrant Buffett of Berkshire Hathaway, (Fortune April 3, 1995), "I'd be a bum in the street with a tin cup if the markets were efficient."

There you go. What comes bigger than the 2 foremost legendary investors all our time against EMH? Eugene Fama? Not even close in many's opinion.

I find it very tempting to say that EMH is nonsense as Soros and Buffett think so. But no. I believe there is efficiency, but question is the extend of it.
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« Reply #68 on: October 22, 2005, 07:13:37 AM »

Quote from: jag82

There you go. What comes bigger than the 2 foremost legendary investors all our time against EMH? Eugene Fama? Not even close in many's opinion.


Well, we have already established that their returns are allowed under EMH so there is no conflicts there.

So is that your only argument against EMH? That 2 person says it isn't true? Hmmm...kinda weak isn't it?

Eugene Fama was won Nobel Prize recognition because he actually proved EMH. Practical tests prove EMH. These two "legends" didn't prove EMH to be wrong.

In fact, we can proof the existence of these "legends" in a random market. EMH never denied that Buffett/Soros were successful in the first place. If you really want I can show you how billionaires can come about in a random market.
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« Reply #69 on: October 22, 2005, 07:15:22 AM »

Quote from: Bystander
For example "value investing" and running businesses like Buffet does is probability not really an "analysis" or any type but belongs to business skills. On the other hand, P/E ratios and other data may in fact be TA.


Investing based on business skills? Ain't that fundamentals? Last i checked, knowing how to read P/E ratio, PBV, profit margin, cash flow, balance sheet, are all part of fundamental (based on sound business)skills.
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« Reply #70 on: October 22, 2005, 07:33:06 AM »

Quote from: carrotcake

Oh looks, here is some practical empirical evidence that EMH works:

1) http://www.projectsenso.com/index.php?name=PNphpBB2&file=viewtopic&p=2870#2870

2) Fama has a fund worth US$69 billion using EMH

There are many other practical examples. But these two alone are strong enough to destroy TA supporters who have zero evidence.  Sad


Practical, maybe. Empirical, a crystal clear no.

It's understandable that you do not understand what is the meaning of empirical as you are still doing your army and yet to even start yr 1st year in the university.

I challenge you to post your two 'practical empirical evidence' in moneytec. I predict that you will chicken out rather than face my challenge, just like what you did on this challenge. Instead of posting real empirical evidence on why TA fails, you ask people to use software like Tradestation to test it out for themselves, ha ha. That's not empirical evidence either.
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« Reply #71 on: October 22, 2005, 07:34:32 AM »

Quote from: jag82

Investing based on business skills? Ain't that fundamentals?


It could be, depending on how you categorise it.

Some FA is allowed by EMH. For example: "business skills".

Quote from: jag82

Last i checked, knowing how to read P/E ratio, PBV, profit margin, cash flow, balance sheet, are all part of fundamental (based on sound business)skills.


Last time I check it wasn't.

Is there a proof that says these figures are related to future performance of the stock? Can you post it? Somehow I don't think making money and becoming rich is as easy as reading a couple of figures then everyone would be doing it. (making the market efficient)



Does it surprise you to know that FA camp and EMH camp are both against TA camp?  cheesy
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« Reply #72 on: October 22, 2005, 07:37:36 AM »

Vision3001, as much as i try to stay neutral in this discussion, i now understand why people have advised me not to debate with people who argue for the sake of arguing. Many issuss are skirted and evidences conveniently forgotten, and stands changed to accomodate new stands. Guess lets not continue this further. I see no end to it.
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« Reply #73 on: October 22, 2005, 07:40:53 AM »

Quote from: jag82
I guess we can continue our debate till the end of time, and it will never be conclusive.


Ahh... slight mistake on your part.

It can be conclusive actually.

Code:

In the late 19th century the luminiferous aether ("light-bearing aether"), or ether, was a substance postulated to be the medium for the propagation of light. Later theories, including Einstein's Theory of Relativity, suggested that an aether did not have to exist, and today the concept is considered "quaint".


Through empirical research and experiments, the concept of ether was debunk.

Anyway, I'll be posting my empirical evidence to show that the market is non-random and let's see how Tommy-Sarah-Carrotcake will respond.
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« Reply #74 on: October 22, 2005, 07:41:04 AM »

Quote from: vision3001

I challenge you to post your two 'practical empirical evidence' in moneytec. I predict that you will chicken out rather than face my challenge, just like what you did on this challenge. Instead of posting real empirical evidence on why TA fails, you ask people to use software like Tradestation to test it out for themselves, ha ha. That's not empirical evidence either.


Hey, I don't know what transpire between you guys before but why not you post your "empricial evidence that TA works" on Elitetraders and see the response?

Unlike carrotcake or vision3001 I don't support moneytec. I heard plenty of bad stories about them. ET forums seems to be fine though as even Buffett have been known to patronise them.

Vision3001, it is also wrong to assum backtesting using software like Tradestation is not empirical evidence. I found this like here that says it is:
http://en.wikipedia.org/wiki/Empirical_method

Quote
Empirical method is generally meant as the collection of a large amount of data on which to base a theory or derive a conclusion in science. It is part of the scientific method, but is often mistakenly assumed to be synonymous with the experimental method.


Collection of large amount of data and testing it on Tradestation fits the bill just fine.

Just my 2 cents. Sorry if I entered an arugment I don't know anything about. Feel free to comment on my thread.
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