Sunday, May 13, 2012

05/13/2012 Mousetrap: a significant advantage over Greenblatt


Condition
Bear Market
S&P Target
1240
Small Portfolio
IAU & XLF
8.16%
Hedge
XLU
-4.62%
Position
Date
Return
Days
Call
GCI
7/14/2011
1.29%
304
Hold
CSGS
10/3/2011
30.78%
223
Hold
NLY
10/25/2011
8.75%
201
Hold
DD
10/27/2011
14.70%
199
Hold
KBR
10/27/2011
2.72%
199
Hold
VG
10/27/2011
-46.50%
199
Buy
TTM
11/30/2011
64.67%
165
Hold
BT
1/4/2012
7.34%
130
Hold
PDLI
3/7/2012
6.73%
67
Hold
CLF
3/19/2012
-22.31%
55
Hold
S&P
Annualized
0.64%
Small Portfolio
Annualized
8.57%
Mousetrap
Annualized
13.19%
Hedged
Annualized
8.34%



When I started this test on 5/31/2011, I was very specific in my choice of filters.  The technical filter measured long term volume-breadth to price-strength ratios in 98 industry groups.  The fundamental filter was Greenblatt’s so-called “Magic Formula”, ranking stocks according to their 12 month trailing earnings yield and return on total capital.

Greenblatt’s filter wasn’t necessarily the best, but it was the easiest to adapt to my own model.  It also had the added advantage that it was being tracked in an automated portfolio on www.validea.com.

I like validea – a lot.  I especially like their Benjamin Graham inspired “Value Investor” portfolio.  But I had tested Greenblatt in real time for two years and found that it did well during that time period, and validea showed it performing well enough to use for my own Mousetrap test.

My test wasn’t to see if Greenblatt’s filter would work, but instead to see if my technical filters could add value to his fundamental selection method.

So I have to be honest that I was disappointed when my hybrid model wasn’t showing quite the advantage over the S&P I was hoping for.  Yes, that is a double digit lead up there, but not in the target range I was hoping for.

What I did not realize until Friday was that Greenblatt’s formula was having one of its worst years on record.  While my own model is up at a 13% annualized rate, Greenblatt’s is DOWN 16%!

These are the selections on the Greenblatt annual portfolio that were selected on 7/8/2011:







7/8/2011
$137.48
$91.47
-33.50%
7/8/2011
$26.18
$23.89
-8.70%
7/8/2011
$31.61
$38.59
22.10%
7/8/2011
$31.41
$27.83
-11.40%
7/8/2011
$44.84
$36.97
-17.60%
7/8/2011
$20.23
$24.69
22.00%
7/8/2011
$38.48
$33.46
-13.00%
7/8/2011
$7.91
$4.01
-49.30%
7/8/2011
$8.39
$8.47
1.00%
7/8/2011
$22.72
$6.21
-72.70%
Average
-16.11%



On 7/8/2011 the S&P closed at 1343.80.  Friday it closed at 1353.39.  Basically flat for the year, but certainly better than a 16% loss.

The fact that I was holding my own using the same filter shows promise.

As for the news…

We continue to see the slow train wreck of a secular bear market, with the Europeans squabbling over how to hold the Euro together instead of trying to find a way to save their economies.  As long as they have the wrong goals, they won’t even be able to begin the healing process.

Over here we are having an energy revolution in the US.  It’s not just natural gas, but land based drilling has actually increased in the last 3 years.  You’d never know from the President’s own stated antipathy to natural resources, but it’s happening nonetheless.  If oil drilling is increasing in spite of political roadblocks, it just may be powerful enough to pull our economy out of danger.

It’s impossible to tell.  We can make models that look to the past, but a secular market changes the rules.

In the mean time, the S&P wasted a year, Greenblatt had a mini-disaster, and the Mousetrap did okay.  Two more weeks will wrap up the beta test, and I’ll give a more detailed report then.

Tim


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