Since the market topped in 2007, the McClellan Oscillator (NYMO) has undertaken a breadth thrust from beneath -100 to Friday’s closing value at 23.04 (or higher) just 15 times.
In general, these thrusts have been excellent buying opportunities. It’s true the combination of rising volume, broad demand and durable technical bottom they’re indicative of hasn’t always delivered long, uninterrupted trend continuations. Nevertheless, this list of NYMO breadth thrusts has signaled many of the major pullback bottoms over the last 8 years. The latest such occurrence was on Friday.
A casual glance at these would satisfy the chartist that a durable bottom is indeed coalescing out of last week’s fits-and-starts. But, there’s a bit more to the story.
In fact, the previous 14 such breadth thrusts are split into two categories: those 1) with a positive divergence, and 2) those without. Descriptions of the McClellan Oscillator treat divergences as an ancillary technical consideration: they may precede a breadth thrust (or not) and are sometimes a credible signal (but other times not).
Looking at NYMO and its subject the NYSE Composite (NYA), however, we see a highly consistent relationship: where a positive divergence precedes a breadth thrust, a strong bullish reversal has nearly always begun. Meanwhile, where a positive divergence is absent before a breadth thrust (i.e. NYMO bottoms with NYA), the reversal is short-lived. This isn’t an immutable law of markets or even a certainty peculiar to NYA; but the prevailing trend over the last 8 years is a powerful one.
Let’s take a (brief) look at all 15.
November/December 2007
Late 2007′s breadth thrust is a template for those breadth thrusts without a preceding positive divergence. In this case, NYA declined from October 2007′s high, then sprung higher 6.8%. During this corrective rally, NYMO soars over 140 points to meet and exceed 23.04. From this point, NYA added another 1.1% before rolling over into a -16.8% correction.
October-November 2008
Right away, here’s an example of a positive divergence that panned out in a nice trade, but did not offer a positive R from the next swing high to low. As we’ll see, this is an exception.
March 2009
This date is familiar to even the most casual market observer. 1) Positive divergence, 2) breadth thrust meeting/exceeding Friday’s close at 23.04, and in contrast to late 2008, 3) a sustained uptrend with virtually no up-front risk.
October 2009 - June 2010
This period held 3 positive divergence occurrences. The orange bubbles show the negative price move during the divergence, the green bubbles show the reward for entering after a NYMO at/above 23.04, and the red bubbles show any subsequent risk/drawdown. The trade off the May 2010 bottom could’ve been played a variety of different ways.
March - December 2011
In 2011, the converse occurred. Here, no positive divergence preceded the three <-100 to =/>23.04 breadth thrusts that occurred. Across this series, the reward/risk on a short entered after a NYMO close =/>23.04 is nearly 6.6 to 1.
March-June 2012
This period held a mixed bag. The first two of three occurrences here were no positive divergence trades (bringing the running total in 2011-2012 to 5 consecutive positive breadth thrusts where a short was the right play). The R for these trades were 5 and 3.8 respectively.
The June 2012 bottom marked a positive divergence bottom. There was a swift 4-session, -4.2% drop after NYMO crossed 23.04 before the final bottom was in; but after that it was and away. How this “trade” is drawn is debatable. As a position trader, your risk management protocol might have stopped them out on the Sept-Nov 2012 “QE3″ pullback. If that were so, the R on this long is 3 - still very good. However, if the trade were held until the high preceding the next NYMO <-100 (just before the “Taper Tantrum” of Q2 2013), the R goes to 6.75.
May-September 2013
Two more positive divergence occurrences, this time feature Rs of 10 and 100. Better than any of the others, these trades illustrate what a NYMO breadth thrust preceded by a positive divergence is capable of producing.
August 2015
And last Friday, 08/28/2015. 1) Breath thrust from <-100 (-109.61 on 08/24) to 23.04 complete. 2) No positive NYMO divergence.
As drawn, the six positive breadth thrusts that weren’t preceded by positive divergences since late 2007 have an average R of 7.4 where a short is opened on the NYMO close =/> 23.04.
A few stats on these six occurrences:
- The average bounce before this NYMO reading in these occurrences? 6.3%. Smallest: 2.99%. Largest: 9.43%. Current: 7.86%.
- The average continuation (i.e. adverse excursion or “max pain” for a short) after this NYMO reading in these occurrences?-1.86%. Smallest: -0.86%. Largest: -4.76%. Current: 0.0%.
- The average return on a short entered in NYA on the open following a close where NYMO met or exceeded 23.04? 11.15%. Smallest: 4.7%. Largest: 17.96%. Current: 0.0%.
This study is by no means perfect. The sample size is on the smaller side and the performance figures simulate perfect “trades”. How money management (i.e. scaling, leverage, drawdowns, etc.) is handled inevitably varies.
However, the overarching message is clear: where NYMO has exhibited a positive breadth thrust that is not preceded by a positive divergence, the bounce accompanying the thrust has been short-lived and dwarfed in size and length by the selloff that follows. Against that baseline context, the day/swing/position trader is left to execute their own method/applications.
In answer to the question of whether the current rally off August 24′s opening lows is “the bottom” or a corrective rally only, the McClellan’s Oscillator’s history since NYA’s pre-GFC highs is clear.