I will weigh in abit on the discussion.
Tape reading is the science of interpreting price and volume with a view to anticipating futures moves of the market. It is correlating price and volume. Volume is a “leading” indicator of price. Price is 1/2 of the picture. Volume is the other 1/2. Tape reading is correlating the two to facilitate the interpretation of supply/demand. Tape reading can be done on a single issue or on the broader market using the “leading issues” as suggested by Rollo Tape.
The main job of the tape reader is to determine the balance between supply and demand. Which is greater supply or demand? Said in different words; who controls the market the bulls or the bears? Said another way; where is the pressure, buying or selling?
THE “
ACTION” of the volume “speaks volumes” ROFLMAO on the STATE of supply and demand.
Now consider this; what is volume? Volume is amount of shares or contracts traded. What do the shares or contract represent? Only ONE thing...$$$$. So.....in correlating price with volume in an attempt to interpret supply/demand (i.e. to “see” which is stronger or has the upper hand, the bulls or the bears..buying or selling) one is basically attempting to get a view on where the “money” is going. You want to know why people do what people do, follow the money trail. You want to know why price does what it does follow the money trail.
PRICE MERELY DENOTES THE VALUE OF VOLUME. Let that one sink in!
See, volume is a leading indicator of price. But price is ALSO a leading indicator of price. The spread (distance from H to L of a bar) and “how” that price spread was made (it’s volume...swoosh...grudgingly...etc) and where price has gone (north or south) says something about where price is likely to go IF one can correctly correlate the picture of price, with the picture drawn by volume. We are talking probabilities here based upon past “actions” of price and volume as no one can tell before hand
WHEN a big wholesale buyer will visit the candy factory and scoop up every last crate cleaning out the factory. ROFLMAO...You get my “drift”? We can never know, for certain, because there are too many variables. Known variables, variables yet to happen, and even unknowable variables. But tape reading can increase the
PROBABILITY of future PA but nothing is “for sure” because of the three categories of variables I just mentioned. Therefore, as Mr Brooks is fond of saying “we trade in fog of uncertainty but there are moments of clarity” As general Patton of ww2 said “when the enemy is shooting at you...and the soldier next to you gets blown away.....you will know what to do.” In others words, things will suddenly become very clear. Trading has those moments.
Now consider this: charts with price and volume are pictorial views of price and volume. They graphically lay the picture out, for us, on price and volume. But they do not interpret them, nor do they correlate them, to arrive at an interpretation of supply/demand..bullish/bearish pressures...etc That is the job of the tape reader. Price and volume are just data. What you do with that data is a horse of a different color. That data, in it’s pictorial form, helps a trader assign “probability” to the “traders equation”, as Brooks calls the equation. Traders devise strategies...set R:R....set SL’s set PT’s...have favorite setups....BUT often fail to assess probability. What is the probability of the trade actually reaching your PT before it hits your SL? Just having a good R:R is theoretical and having a good setup or entry/exit signal is ok But what about the context. The exact same price pattern in different contexts will render different results. Thus PROBABILITY
MUST enter the equation. At this point you might want to read and think about the article I will post in my next post on this thread. Look at it NOW, if you will. Think about it if you will.
Having said all of the above I rarely use volume. Why? I am a scalper of 1 to 8 points in the ES and other emini’s. As a scalper I can pretty much just look at a bar and determine if it was made on big or little volume. If any doubt I can just pull up volume. Look at the chart below. Notice that big bear bar at the top of this chart. Strong bear bar breaking hard ...breaking below MA...closing almost on it’s low tick. Closing the previous gap to the left in one concerted swoop. What are the chances this bar was made on low volume? On big volume? I don’t need to look at volume bars to know that this bar was made on high or increasing volume. If I have any doubts I can pull up the volume bars but I just “know” from experience that this sort of price action is made on high or higher volume so I can “tape read” i.e. correlate price and volume to arrive at an interpretation of supply/demand (bearish/bullish...buying/selling pressures).
What is the PROBABILITY, given the context, of seeing a price reversal to long on the next bar following that big bear bar? Very little IMO as I would interpret the tape, on this specific example, without any look at the broader market of other leading issues. Nothing wrong with looking at the broader market. It too is tape reading. So..what is the probability of the NEXT bar being a follow through (FT) bearish bar? 30%? 50%? 60%? 70%? What is the probability that we will see more price action south after the close of that big bear bar? Greater than the probability of a reversal to bullish? I mean the big candy buyer COULD show up at the factory on the very next bar (that is an unknowable variable) but the odds IMO certainly favor at least enough more move down on the next few bars to warrant entering in on a short scalp..placing my SL at the top of that big bear bar and averaging down even more short if price climbed back up some on the next bar after that big bear bar. Probability favors SOUTH. Would you really want to be long?
Next two bars are indeed bear bars (Note they are smaller) then some PA sideways as profit taking takes place. We see some bull bars in the PB but they can’t even manage to push price back up to the MA before we see bear bars appear again. So...what are the odds we will see another push down? Pretty high IMO. I would be looking for a second leg MM south and we got it and even got a third leg south. I don’t have to look at volume to know that this first failed PB i.e. the reaction was made on less volume than that first leg down. But if I have any doubt I can pull the volume bars up. The “tape” is “dull” on the reaction (i.e. on the PB) In bear trends when the reaction is dull expect more PA south. In bull trends when the market gets dull on PB’S expect a resumption of the bull trend.
The second leg down had a subsequent PB (also dull reaction and the profit taking by bears along with the reversal attempts by bulls) couldn't push price back up to MA before another series of bear bars appear graphically on the chart. Odds anyone the move south will continue? This is tape reading on an individual instrument.
Vicente from NY you might want to read the book below for a marriage of classic tape reading with modern charting via computers in place of by hand back in the day. At the very least you ought to find some interesting concepts in it.
https://www.amazon.sg/Tape-Reading-21st-Century-Droke/dp/0967069718