[mister ed]

Originally Posted by jperl »

A complete discussion of this can be found in the "Trading with Market Statistics" threads.

Thanks PP and Jerry - clarifies some things. Jerry, your threads (linked in quote above) are outstanding.

[mp_trader]

I use MP extensively in my trading, and use the new version of EW for my MP levels. To make EW conform to regular MP, you simply put the PH on a 30min chart. The POC will be the same when the number of price buckets are odd, and vary from other software when the number of buckets are even. This depends on whether that particular software rounds the half a tick value up or down. The new EW supports two value area computation methods. One conforms to eSignal, the other CQG. I use the CQG method. It is selectable as a global option. The VA computation matches other software with the same caveat regarding rounding. You will not get a MP with letters like a standard profile, but you can toggle the 30min bars on/off to see which bracket the TPO belongs to.

In the past, the PH tool used screen coordinates for the price buckets. That was a major complaint, and why I used a different program for MP. That has changed in the new version to buckets matching tick size. The EPH is the only softare I use for my MP work. I would like to see a couple more features added, and I have submitted those.

Ensign is in the process of designing a new implementation for higher performance (I don't see any performance issues, btw) and adding new features. I am not affiliated with Ensign, so I have no idea when that is scheduled for release.

I use the PH tool on a 30min chart with TPO (time at price), and export the poc/vah/val values from that chart to other lower timeframes. EW supports constructing the histogram based on time or volume.

Volume Based Profiles
I know jperl has videos with a volume profile based on one minute bars. In my experience, EW does a reasonable job most of the time in this case, but I have seen occassional large differences between a volume histo based on one minute bars vs. actual ticks. I was running the two profiles on the same system with the same data feed. The comparison software was MarketDelta. The discrepancies occur when the profile takes on a double distribution shape. The occasional differences are large enough to place the volume POC on the other side of vwap. To be fair, even two different softwares using the same tick data can arrive at different POC (and value areas by extension) in this double distribution case. The reason is volume profile implementations usually incorporate some kind of threshold when comparing the buckets, and those thresholds vary from one vendor to another. So one software using a smaller threshold would dynamically shift its VPOC sooner as the second distribution began to overtake the first. From a trading perspective, this is a technicality, since a developing dbl dist provides a reasonble expectation of price behavior when transitioning from one to the other.

On a broader MP note, using MP for just VAH/VAL levels -while useful- is nowhere near the utility of understanding the auction process that a MP uniquely shows. Just my opinion.

[torero]

Originally Posted by jperl »

Perhaps this is the place for me to comment on this since I have written 11 threads on this topic entitled "Trading with Market Statistics".
You should be aware that market profile was developed more than 40 years ago at a time when plotting distribution functions had to be done by hand. You can understand that it was not possible to include every trade in the distribution function. Instead prices in 30 minute increments were used to generate the distribution. The net result is you end up with a distribution that essentially is a 30 minute average of the real distribution. Even Ensigns computation of the distribution is approximate, but it is much closer to the real distribution than anything else.
Using a distribution like Ensign's has many advantages, none the least of which the Peak Volume Price dynamic (which I call the PVP to distinguish it from Market Profile's POC) is easy to follow as it builds up at one price and then evolves into another price over time. In MP this tends to get washed out due to the averaging.

As far as value area is concerned, again for Market Profile, this was an historical choice of 70% of the data to conform to something like 1 standard deviation observed in a Normal Distribution. Unfortunately, the distribution is rarely Normal, so that defining a "value area" in this way is purely heuristic and has little if anything to do with the true standard deviation for the distribution. If anything, computing the value area with respect to the PVP yields values which are usually too large. A complete discussion of this can be found in the "Trading with Market Statistics" threads.

I've never thought about the fact that back then, everything was done manually, it was a quick way to summarize the market. After understanding that fact the proliferation of the personal computer and super-computing power, it does seem more precise using Price Histogram than the traditional MP. POC is for me a very powerful and important event. The others VAH and VAL I'm still researching to find an edge using it. Thanks for the enlightment, jperl. I'm now using Ensign, a great tool indeed.

[subq]

I personally think there are certain things about MP (old or not) that are still very valid.

For example, I always look at the POC, yes it is based on TPOs but it is still valid IMO. I also look at the POCv (as IRT names it) which is basically the POC based on volume.

I will agree that many things with market profile are completely irrelevant (to me) in this day and age.

For example, I don't put a lot of weight on the value areas. In addition, I don't put much weight on the IB either. Even Steidlemeyer (according to his more recent writings) doesn't use it the old way anymore.

I personally prefer IRT because it is the most flexible MP software I have used. The developer has even put in specific requests on MP charting enhancements.

I find it interesting that EW has two computation methods, since I know IRT was the first to do that...no big deal though, competition makes things better for us.

[darthtrader]

Originally Posted by subq »

For example, I don't put a lot of weight on the value areas. In addition, I don't put much weight on the IB either. Even Steidlemeyer (according to his more recent writings) doesn't use it the old way anymore.

hey Subq, can you point me to where you found Steidlemeyers newer stuff?
I would love to have a discussion on how we can use the developement in computing/data over the past 15 years to add to the original MP concepts.
I also don't put alot of weight in the value area. For me its just easier to eyeball it on a volume profile. It also messes up IMO when you have a nice double volume distribution, if your only looking at TPO based value you might easily miss the lovely breakout trades between the peaks of the volume distribution.
Really this discussion kind of boils down to time vs volume. Both though are market generated information and probly doesn't make much sense to discard one or the other.
My real problem with current MP software is we really need something that can backtest new ideas.

[LS_Chad]

http://www.linnsoft.com/dl/win/prere...t_win_90c7.exe

Investor/RT has a TPO Indicator which allows you to backtest various MP-based strategies historically. The TPO Indicator will give you the historical developing VA & POC...on any periodicity (1-min, tickbars, etc). If you're testing 1-min data, you can see how the developing VAH (based on 30-min brackets) moved up and down within the 30-min period. TPO Indicator also now gives you access to IB & IB Multiples...along with developing TPO counts (both above/below POC, with or without singles), etc.

More info on TPO Indicator can be found at: http://www.linnsoft.com/tour/techind/tpo.htm

[subq]

darthtrader,

I am not even sure it is available in print, he covers it in the seminars though, and the concept is in their own software as well.

He is mostly looking at dynamic profiles and points of control, dynamic profile meaning they are not time limited, profiles will keep building and building if they rotational and will start new profiles once they break out of rotation...that coupled with market moves from point of control to point of control.

[unicorn]

Originally Posted by subq »

profiles will keep building and building if they rotational

Hi subq;

I think there is a missing word in your sentence, and I cannot understand the information you want to convey.

Please add the missing word.

Thanks.