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Daytrading Support and Resistance*


Donald L. Jones
CISCO Futures
July 20, 2002
Copyright Donald L. Jones, all rights reserved

Day trading the market indexes is a fast growing arena. Market Profile value analysis for short term support and resistance (i.e. the value area) is currently in vogue. Unfortunately, few traders realize that Market Profile values are not at all reliable under certain circumstances. Such situations occur about one-third of the time. In this article we show how to identify and resolve the unreliable situations.

Recently I wrote on Auction Market Theory, the framework within which auction markets operate (ref 1, ref 2). Three auction market structures are covered: Market Profile, Liquidity Data Bank (LDB) and Overlay Demand Curves. (There are two types of profile: Market Profile comes from CBOT LDB cleared data, Meta-Profiles are built from tick data) In this work I will draw from the Market Profile/Meta-Profile (which is being used by many traders) and the LDB (which is not). To briefly review, Market Profile/Meta-Profile builds a utilization picture of market activity by marking the times at which trading took place. LDB posts volume at price, regardless of time of occurrence. LDB displays typically include a Market Profile and the Market Profile value area.

Meta-Profile, a Summing Process
In earlier articles profiles were shown to be a tool for finding the market perceived value at the end of the most recent trading day. A profile is a graphic that sums the frequency of trading at each price with TPOs (trading at a price in a particular timeframe). Profiles post and integrate the trading over the entire day. The net result is a quasi-bell shaped price-time chart where the central 70 percent of the action defines value. Price at the peak of the summed activity is called the point of control, or POC. POC of the Meta-Profiles in this study will be identified as "TPO POC" (more properly TPT instead of TPO since TPTs come from ticks and TPOs come from cleared data), whereas the POC of the Market Profile is at the price of maximum volume. The Meta-Profile in figure 3 has a TPO POC of 101400 with value area limits 101850 - 101050. A summing process for determining value works well for markets in balance but can be quite wrong if value changes within the day.

Liquidity Data Bank Market Profile, a Point Process
An alternative method of value measurement, independent of the profile TPOs, uses the (cleared) volume figures from the Liquidity Data Bank (LDB). LDB's in ref 2 located the prices at which commercial traders dominated the market. The same volume data can be used to find value when the volume of all traders is considered. The price at peak volume for the LDB is called the center of value or POC. Unlike the profile, in which the POC is the sum of a number of events, POC on the LDB display can be created by heavy trading in a very short time, even a single large trade. The weakness of a point process is that a maximum trading price may be superceded or followed by a region of not-quite-as-much-volume at a group of prices. The new region could dominate in terms of value, but the price from the one big volume point would (erroneously) locate the point of control.

Points of Agreement/Disagreement
In stable markets both Meta-Profiles and LDB Market Profiles find essentially the same value centers and value areas. Should demand shift within the day (a change in value), one or the other will likely be wrong. Below, we examine a shifted value day in which the difference between the profile TPO POC and LDB volume POC are large. The big difference between the two is the tip-off that value has moved. The trader following the correct value figures (LDB, in this case) will have numerous trading opportunities the next day. The Meta-Profile values offer relate to the fat part of the curve, which was obsolete for locating value by the end of the day.

Value Calculations
There are two value determinations for the S&P of June 11, 2002, the profile and the LDB. Each will provide it's own self_consistent support/resistance, or value areas. Value limits found will be used in trading the market of June 12. We can get both value areas from the CISCO Liquidity Data Bank display, which posts price, volume, volume distributed among the four classes of floor members and the Market Profile. We are concerned here with only the price, volume and profile columns (a full discussion of the LDB is on the website of ref 3). S&Ps are highly volatile, with wide daily trading ranges. Figure 1 is a shortened LDB report for June 11, to illustrate the format. The Chicago Mercantile leases the LDB format from CBOT.


     LDB Report for SP June 11, 2002

      PRICE   VOLUME  %VOL %CTI1 %CTI2 %CTI3 %CTI4 BRACKETS(*)

     104020       86   0.1  53.5  29.1   2.3  15.1 E   
     104000      272   0.2  52.9   5.1   0.0  41.9 E
     103980      102   0.1  52.9   9.8   4.9  32.4 E
     103970       84   0.1  52.4   7.1   7.1  33.3 E
     103960        2   0.0  50.0   0.0   0.0  50.0 E
     103950      522   0.4  53.8   3.6   1.3  41.2 DE
     103940        2   0.0  50.0   0.0   0.0  50.0 E
     103930      110   0.1  54.5   8.2  18.2  19.1 DE
     103920      128   0.1  49.2   0.8  15.6  34.4 DE
     103900     1198   1.0  56.3   4.0   6.3  33.5 BDE
     103890       78   0.1  15.4   0.0   0.0  84.6 DE
     103880      362   0.3  48.9   3.0  11.3  36.7 BDE
     103870      420   0.3  56.4   1.0  12.1  30.5 BDE
     103860       16   0.0  56.3   0.0  18.8  25.0 BDE
     103850     1908   1.5  51.0   6.6   3.7  38.7 BDE
     103840       14   0.0  14.3   0.0   0.0  85.7 BD
     103830      846   0.7  56.6   3.7   9.8  29.9 BDE
     103820     1056   0.8  57.4   7.3   2.4  33.0 BDE
     103810       24   0.0  95.8   0.0   0.0   4.2 DE
     103800     2540   2.0  60.9   4.3   3.9  30.9 BCDE
     103790       36   0.0  55.6  38.9   0.0   5.6 BCD
     103780     1302   1.0  56.5   3.1  11.8  28.6 BCDE
     103770      937   0.8  58.6   3.7  11.6  26.0 BCDE
     103760       54   0.0  51.9   1.9  37.0   9.3 BDE
     103750     2682   2.2  60.9   4.4   5.2  29.5 BCDE
     103740       18   0.0  50.0   0.0  27.8  22.2 CE
     103730      760   0.6  63.2   2.6  14.2  20.0 BCDE
     103720     1330   1.1  59.6   2.6   3.8  34.0 BCDE
     103710       48   0.0  35.4   0.0   0.0  64.6 BCE
     103700     3165   2.5  55.4   2.7   8.8  33.1 BCDE
     103690       24   0.0  54.2   0.0  41.7   4.2 B
     103680     1118   0.9  64.3   2.5   9.1  24.1 BCDE
     103670      888   0.7  60.7   2.5   9.7  27.1 BCDE
     103660       34   0.0  61.8   0.0   8.8  29.4 BCDE
     103650     3426   2.8  62.3   3.1   6.0  28.6 BCDE
     103640       58   0.0  62.1  24.1   1.7  12.1 CD
     103630      766   0.6  66.1   0.4  10.6  23.0 BCDE
     103620     1020   0.8  60.2   2.6   5.6  31.6 BCDF
     103610      104   0.1  51.0  21.2   6.7  21.2 BCDE
     103600     3214   2.6  57.7   1.3   6.6  34.3 BCDEF
     103590       40   0.0  57.5  27.5  15.0   0.0 BE
     103580      912   0.7  58.7   3.2   7.5  30.7 BCDEF
     103570      596   0.5  57.6   1.2   9.4  31.9 BCDEF
     103560       26   0.0  76.9   0.0  23.1   0.0 CDF
     103550     1951   1.6  62.2   3.5   4.8  29.4 BCDEFG
     103540       28   0.0  42.9   0.0  17.9  39.3 BCEFG
     103530      870   0.7  64.4   2.8   9.9  23.0 BCDEFG
     103520     1520   1.2  63.2   1.6   9.5  25.7 BCDEFG
     103510      155   0.1  53.5   0.0  14.8  31.6 BCDEFG
     103500     3596   2.9  59.0   4.2   5.5  31.3 BCDEFG      
  ------------------------------------------------------------

Figure 1.  Detail data listing of a standard LDB for S&P June 2002, 
June 11 2002.  Volumes are reported in sides, where two sides
make a round turn, or complete trade.  Trading is concentrated 
at the 00 and 50 price levels.  Example:  103600 shows 3214 
sides traded; 103520 shows 1520 sides traded and much less 
trading at the 'odd' prices 103590, 103580, 103570 and 103560. 
The dominance of trading at 00 and 05 is consistent for the S&P.



The S&P is characterized by heavy trading at the 'even' prices 00 and 50, with much less at the 'odd' prices 01, 02, 03, 04, 06, 07, 08 and 09 (odd and even refer to market acceptance, not mathematics). Indeed, even in a relatively heavily traded market some 'odds' are not traded at all (e.g. no trading at 104010, 103990, 103910, etc.).

In a search for the peak volume price, the 'odds' play no role at all and may be ignored.

Figure 2 is the full LDB for June 11, with the 'odds' removed.


      PRICE   VOLUME  %VOL %CTI1 %CTI2 %CTI3 %CTI4 BRACKETS(*)

     104020       86   0.1  53.5  29.1   2.3  15.1 E <== TPO VaU
     104000      272   0.2  52.9   5.1   0.0  41.9 E                            
     103950      522   0.4  53.8   3.6   1.3  41.2 DE                           
     103900     1198   1.0  56.3   4.0   6.3  33.5 BDE                          
     103850     1908   1.5  51.0   6.6   3.7  38.7 BDE                          
     103800     2540   2.0  60.9   4.3   3.9  30.9 BCDE                         
     103750     2682   2.2  60.9   4.4   5.2  29.5 BCDE                         
     103700     3165   2.5  55.4   2.7   8.8  33.1 BCDE                         
     103650     3426   2.8  62.3   3.1   6.0  28.6 BCDE                         
     103600     3214   2.6  57.7   1.3   6.6  34.3 BCDEF                        
     103550     1951   1.6  62.2   3.5   4.8  29.4 BCDEFG              VOL VAU
     103500     3596   2.9  59.0   4.2   5.5  31.3 BCDEFG          <== TPO POC
     103450     2246   1.8  59.5   3.9   5.2  31.5 BCDFG                 
     103400     1635   1.3  52.5   2.8  12.7  32.1 BCDFG                        
     103350     1440   1.2  61.3   1.2  10.2  27.3 BCG                          
     103300      898   0.7  56.0   2.7   7.9  33.4 BCG                          
     103250      406   0.3  58.1   1.2  12.6  28.1 G                            
     103200       96   0.1  63.5   0.0   5.2  31.3 G                            
     103150      596   0.5  55.7   2.0   4.7  37.6 GH                           
     103100     1000   0.8  53.3   3.6   5.9  37.2 GH                           
     103050      496   0.4  57.3   2.0   0.0  40.7 GH                           
     103000      332   0.3  44.9   0.0   6.6  48.5 H                            
     102950      440   0.4  55.0   3.0   0.0  42.0 H                            
     102900      372   0.3  42.7   0.0   0.5  56.7 H                            
     102850      862   0.7  55.6   2.9   3.9  37.6 H                            
     102800     1478   1.2  55.5   6.4   3.5  34.6 HJK                          
     102750     1980   1.6  56.4   3.4   8.6  31.6 HIJKL                        
     102700     1864   1.5  52.5   4.5   8.3  34.7 HIJKL                        
     102650      943   0.8  61.2   6.6   5.9  26.3 IJKL                         
     102600     1104   0.9  56.7   5.0  10.8  27.5 JKL                          
     102550     1153   0.9  55.9   2.3   3.6  38.1 JKL                          
     102500     1217   1.0  57.2   1.6   7.4  33.8 JKLM <== TPO VaL 
     102450     1218   1.0  46.6   2.9   5.1  45.4 JLM                          
     102400      910   0.7  51.0   6.6   2.3  40.1 JLM                          
     102350      612   0.5  53.3  15.0   6.2  25.5 LM                           
     102300      254   0.2  50.0   0.0   7.1  42.9 M                            
     102250      138   0.1  58.0   0.0   5.8  36.2 M                            
     102200      876   0.7  53.4   9.8   9.8  26.9 M                            
     102150      336   0.3  58.9   3.0  10.4  27.7 M                            
     102100      508   0.4  60.0   1.0   1.6  37.4 M                            
     102050      564   0.5  63.5   2.1   6.6  27.8 MN                           
     102000     1164   0.9  56.1   7.0   5.8  31.1 MN                           
     101950     1194   1.0  57.1   1.4   9.9  31.6 MN                           
     101900      832   0.7  55.9   1.2   6.3  36.7 MN                           
     101850      354   0.3  50.3   8.5  10.5  30.8 MN                           
     101800      640   0.5  52.2   6.3   5.5  36.1 MN                           
     101750      336   0.3  50.0   0.0   8.9  41.1 N                            
     101700      594   0.5  52.4   0.2   6.1  41.4 N                            
     101650      804   0.6  53.1   4.0   5.2  37.7 N                            
     101600      914   0.7  57.8   1.8   8.5  31.9 N                            
     101550      924   0.7  56.4   3.5  10.7  29.4 NO                           
     101500     1734   1.4  54.0   1.7   4.2  40.0 NO                           
     101450     2278   1.8  47.3   4.8   4.9  43.0 NO                           
     101400     4212   3.4  47.3   4.9   3.8  44.0 NO              <== VOL POC
     101350     3792   3.0  49.7   4.3   4.0  41.9 NO                           
     101300     2850   2.3  44.6   0.7   3.6  51.1 O                            
     101250      552   0.4  57.6   3.6   5.8  33.0 O                            
     101210       76   0.1  17.1   2.6   0.0  80.3 O               <== VOL VaL

Figure 2.  Volume at major 'even' prices.  Columns: 1 is price,
2 is volume (1/2 of round turn) and column 8 is a Market Profile.
Columns 3, 4, 5, 6, and 7 show trading statistics for the four
classes of members on the floor and are not used in this article.
Value areas from the Market Profile (TPO) and from the volume (vol)
are identified by the arrows on the right of the display.


In figure 2, column 2, the peak volume of 4212 occurs at a price of 101400. 101400 is then the center of value (POC) for volume. For the profile on the far right, the peak TPO count (POC) of 6 is at 103500 (or 103550). The centers are far apart. Both cannot describe value at the end of the day. Which is correct?

Auction Market Analysis: Reading the Market
The profile is clustered around trading activity in periods B through G (8:30 to 11 AM, each letter identifies a 1/2 hour trading period). The 70% value area is from 104020 to 102510, marked as TPOVaU and TPOVaL on figure 2. The volume value area, centered at 101400 (periods N and O (2:30 to 3:15 PM)), is 103500 to 101210, identified as volVaU and volVaL.

Meta-Profile says value (demand) is the range 104020 to 102500, from the open to 11 AM. Volume places maximum demand later in the day, near the bottom of the price range. From the profile part of figure 2, it is clear that the market opened (B period) near the highs and did quite a lot of trading there. Demand began shifting downward around H period (11:30 - 12:00) and moved steadily down the rest of the day. Market Profile value was superceded by the appearance of heavy volume late in the day. In this example the volume value area is the correct descriptor of end of day value.

To recap:
1. Demand centered around the price 103480 until about 11 AM.
2. Then price started down, pausing at the 102700 level (11:30 to 14:00).
3. The next run ended at the 101400 level near the end of the trading day.
Both the Meta-Profile and LDB Market Profile are correct for their respective times of day. But the trader needs to know which value area to use for tomorrow and that is clearly the LDB volVaU and volVaL.

Everyone knows that demand can shift within a day. After all, that is exactly what the daytrader seeks. Auction Market analysis provides the details of the shifting. The lesson to be drawn is that when a demand shift takes place within a day, simple formulations of value like either the Meta-Profile or the LDB Market Profile must be augmented by analyzing the situation, the market's behavior. This merely reinforces my message in ref 1 and ref 2 to: "Understand your markets". In this case, the two auction market displays, Meta-Profile and Liquidity Data Bank, provide enough information to make a determination.

Evaluating Trading Opportunity the Next Day
We can look at daytrading opportunities on June 12 by supposing that we would trade on any breakout from a value area. As will be seen, only the volume lower value area limit, VOL VaL, will be within range.

The two value area determinations are:

                      VaU      POC      VaL
Meta-Profile       104020   103480   102510
LDB volume         103500   101400   101210

We will define a trading opportunity as a simple breakout from an upper or lower value area. For example, price moving down through VOL VaL, the volume lower value area limit (101210), is a breakout and hence a trading opportunity. A Meta-Profile type map of S&P June 02 market activity on June 12 is in figure 3. The only VaU or VaL for either Meta-Profile or LDB within the day's trading range is VOL VaL, marked on the right of the profile half-hour bars at 101210. Breakout (downside) for the VOL VaL at 101200 is marked with a horizontal line.


                    META-PROFILE* REPORT FOR 06 12 02
                          AND SEGMENTED AUCTION

COMMODITY  --  S&P 500 (CME-IOM)     JUN 02


   Price  Brackets               Segmented Auction
 102280 N                                                     N   
 102250 N                                                     N   
 102200 N                                                     N   
 102150 N                                                     N   
 102100 NP                                                    N  P
 102050 NP                                                    N  P
 102000 NP                                                    N  P
 101950 CNP                  C                                N  P
 101900 CDIN                 C  D          |   I              N   
 101850 BCDIJN            B |C |D       |  |  |I |J |        |N | 
 101800 BCDIJN            B |C |D       |  |  |I |J |  |     |N | 
 101750 BCDIJKN           B |C |D |  |  |  |  |I |J |K |  |  |N | 
 101700 BCDIJKMN         |B |C |D |  |  |  |  |I |J |K |  |M |N | 
 101650 BCDIJKMN         |B |C |D |  |  |  |  |I |J |K |  |M |N | 
 101600 BCDIJKMN         |B |C |D |  |  |  |  |I |J |K |  |M |N | 
 101550 BCDEIJKMN        |B |C |D |E |  |  |  |I |J |K |  |M |N | 
 101500 BCDEIJKLM        |B |C |D |E |  |  |  |I |J |K |L |M |  | 
 101450 BCDEIJKLM        |B |C |D |E |  |  |  |I |J |K |L |M |  | 
 101400 BCDEIJKLM        |B |C |D |E |  |  |  |I |J |K |L |M |  | 
 101350 BDEFIJKLM        |B     D |E |F |  |  |I |J |K |L |M |  | 
 101300 BDEFIJKLM        |B     D |E |F |  |  |I |J |K |L |M |  | 
 101250 BDEFIKLM         |B     D |E |F |  |  |I |  |K |L |M |  | <== VOL VaL/Yst
 101200 BDEFIKLM         |B     D |E |F |  |  |I |  |K |L |M |  |       101210
-------------------------------------------------------------------------------
 101150 BEFIKLM           B        E |F |  |  |I |  |K |L |M |  | Breakout Price
 101100 BEFIKLM           B        E |F |  |  |I |  |K |L |M |  |   101200
 101050 BEFIKL            B        E |F |  |  |I |  |K |L |  |  | 
 101000 EFIKL                      E  F    |  |I     K |L         
 100950 EFIKL                      E  F    |   I     K  L         
 100900 EFHIKL                     E  F     H  I     K  L         
 100850 FHL                           F     H           L         
 100800 FH                            F     H                     
 100750 FH                            F     H                     
 100700 FGH                           F  G  H                     
 100650 FGH                           F  G  H                     
 100600 FGH                           F  G  H                     
 100550 FGH                           F  G  H                     
 100500 FGH                           F  G  H                     
 100450 FGH                           F  G  H                     
 100400 FGH                           F  G  H                     
 100350 G                                G                        
 100300 G                                G                        
 100250 G                                G                        


                    Trading Opportunities for June 12

                         Time   Price    Time  Price  Opportunity
     Break out  down  B  0836  101200 to 0838 101060          140
                      D  0959  101200 to 1003 100900          300
                      F  1033  101200 to 1102 100250          950
                      K  1318  101200 to 1326 100870          330
                      M  1401  101200 to 1405 101100          100

                      Opportunity units:  100 = $250

Figure 3.  Trading opportunities on downside breakouts from the
lower volume value area.  All 'odd' prices have been removed.
Legend: Column 1 = Price, Column 2 = Market
Profile. Columns 3-16 are half-hour trading ranges (B = 8:30 to 9 AM,
C = 9 to 9:30, D = 9:30 to 10, and so on).  Associated with the 
half-hour bars are the value areas (vertical solid bars) as they 
develop through the day.

The day's trading opportunities are posted below the profile.  The
first time-price pair is the downwards crossover of price as it triggers
a short at 101200 (volVaL = 101210).  The second time-price pair
is the time and price of the lowest price reached in the move.
The Opportunity column is the maximum potential of the move.


The June 11 case illustrates one of several situations that can arise if you use the wrong value area. The Meta-Profile value area was completely out of range for June 12 trading. You would have had no trading signals for the day. Volume value area, reflecting the intra-day value change on June 11, gave you five daytrading opportunities on June 12. Price passed down through the lower volume value area five times. Using the correct market knowledge does offer an edge.

How often do these value area disparities arise? Here are statistics covering S&P for the June 2002 contract.


  Number of trading days: 67
  Largest difference between the TPO and volume POC:  2080 ($5200)
  Smallest difference between the TPO and volume POC:    0
  Average difference between the TPO and volume POC:   281 ($702)
  Number days with average or less change in value:     44
  Number of days with a large change in value:          21
  Number of days unresolved:                             2
    Average difference between the POCs:               650 ($1625)
    Number days volume value area is correct:           17
    Number days Market Profile value area is correct:    4

Table 1. Statistics for Point of Control (POC) for S&P, June 2002 delivery.


Validation
The trader who only has access to Market Profiles knows the data will be incorrect about one-third of the time. If you are one of those, you can improve your understanding of your data by examining the profile shape as we did above. If you see a distinct late-in-the-day progression away from your value area, beware. In that case, although you might not know the correct (volume) value area, you would certainly have enough information to distrust the profile value area you do have.

The market on June 11 has a lot of back and forth trading early in the day with heavy volume later on. The LDB Market Profile value area specified the correct support/resistance prices. Imagine just the opposite situation: heavy volume early on, value movement away from that price level, with the profile being built over the rest of the day. Now the Market Profile support/resistance prices will be the correct ones. Smaller value shifts during the day can create an overlap of the two value areas. When the situation is not clear cut, one may be unable to find the 'right' support/resistance prices. The statistics in Table 1. lists two such cases.

Footnote:
A number of years ago I did a study of Meta-Profile value area versus volume value area (ref 4, ref 4a). My conclusion was that there was little difference between the two. That is true of balanced, congesting markets. It is not necessarily true of directional markets.



Ref 1 Technical Analysis of Stocks & Commodities, June 2002, pg 22
Ref 2 Technical Analysis of Stocks & Commodities, July 2002, pg 32
Ref 3 http://www.cisco-futures.com
Ref 4 Market Logic School Alumni Letter, April 1987
Ref 4a Stocks & Commodities, Sep 1987

* Copyright Donald L. Jones, CISCO Futures 2002