Greenbackd

Jae Jun at Old School Value has updated his great post back-testing the performance of net current asset value (NCAV) against “net net working capital” (NNWC) by refining the back-test (see NCAV NNWC Backtest Refined). His new back-test increases the rebalancing period to 6 months from 4 weeks, excludes companies with daily volume below 30,000 shares, and introduces the 66% margin of safety to the NCAV stocks (I wasn’t aware that this was missing from yesterday’s back-test, and would explain why the performance of the NCAV stocks was so poor).

Jae Jun’s original back-test compared the performance of NCAV and NNWC stocks over the last three years. He calculated NNWC by discounting the current asset value of stocks in line with Graham’s liquidation value discounts, but excludes the “Fixed and miscellaneous assets” included by Graham. Here’s Jae Jun’s NNWC formula:

NNWC = Cash + (0.75 x Accounts receivables) + (0.5 x  Inventory)

Here’s Graham’s suggested discounts (extracted from Chapter XLIII of Security Analysis: The Classic 1934 Edition “Significance of the Current Asset Value”):

As I noted yesterday, excluding the “Fixed and miscellaneous assets” from the liquidating value calculation makes for an exceptionally austere valuation.

Jae Jun has refined his screening criteria as follows:

Volume is greater than 30k

NCAV margin of safety included

Slippage increased to 1%

Rebalance frequency changed to 6 months

Test period remains at 3 years

Here are Jae Jun’s back-test results with the new criteria:

For the period 2001 to 2004

For the period 2004 to 2007

For the period 2007 to 2010

It’s an impressive analysis by Jae Jun. Dividing the return into three periods is very helpful. While the returns overall are excellent, there were some serious smash-ups along the way, particularly the February 2007 to March 2009 period. As Klarman and Taleb have both discussed, it demonstrates that your starting date as an investor makes a big difference to your impression of the markets or whatever theory you use to invest. Compare, for example, the experiences of two different NCAV investors, one starting in February 2003 and the second starting in February 2007. The 2003 investor was up 500% in the first year, and had a good claim to possessing some investment genius. The 2007 investor was feeling very ill in March 2009, down around 75% and considering a career in truck driving. Both were following the same strategy, and so really had no basis for either conclusion. I doubt that thought consoles the trucker.

Jae Jun’s Old School Value NNWC NCAV Screen is available here (it’s free).