Feb

4

 There's a new book out (free for review by academics/professors) by a Marine Corps Captain that may be of interest (combining aspects of Thorp and Buffett). The book is called Quantitative Value: A Practitioner's Guide to Automating Intelligent Investment and Eliminating Behavioral Errors.

The author, Dr. Wesley Gray, Ph.D. (Univ. of Chicago), also has been discussing topics related to those recently mentioned on the Dailyspec.

1) We propose a model that is designed to identify bull-market and bear-market regimes. We examine correlation between stocks and bonds as a signal. Our hypothesis is that negative correlation between long bonds and stocks represents a bear-market regime, and a positive, or non-existent correlation, reflects a bull market regime.

2) We study whether the presence of short-term investors is related to a speculative component in stock prices using a new measure of holding duration. First, we characterize institutional investors' holding durations since 1985 and find that holding durations have been stable and, if anything, slightly lengthened over time. Second, we document that the presence of short-term investors is strongly related to temporary price distortions, consistent with a speculative stock component in stock prices as modeled in Bolton, Scheinkman, and Xiong (2006). As short-term investors move into (out of) stocks, their prices tend to go up (down) relative to fundamentals. As the presence of short-term investors is strongly mean-reverting, this creates a predictable pattern in stock returns. We document such predictability using both valuation proxies and asset pricing tests.

3)  This is Gray's take on the similarities between investing/portfolio management and kite surfing!:

A laundry list of similarities for your review:

* Learning how to kite surf, first requires that you learn how to fly a kite (duh).

* Investment realm: you need to know accounting, basic finance, and how to use a calculator before investing.

* After learning how to fly the kite, you need to drown a few times.

* Investment realm: start investing with small amounts and take your lumps early. I'd rather invest with someone who's suffered a 50% drawdown than someone who has always made money.

* Never go full throttle on your kite–and NEVER panic when you crash and burn–or otherwise you'll really be fu$í.

* Investment realm: stay away from leverage and "hanging at the margin's edge"; when the market is blowing up, don't panic…just release the throttle, swallow your pride, and drift to a soft landing.

* Flying downwind is easy, fun, and builds confidence, but you also need to learn how to fly upwind, which is hard and frustrating, but it may save your life.

* Investment realm: Going with the flow of a bull market is easy and not really skill, but may give an investor the mirage of skill. The real skill comes in learning how.


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