Mad Money = Money-Losing Investment Advice
In the December 2007 issue of the Quarterly Review of Economics and Finance, there is an article "Does Mad Money make the market go mad?"
From the abstract: Our analysis of returns and trading volume around stock recommendations aired on charismatic host Jim Cramer’s Mad Money program reveals statistical evidence of response to both his buy and sell opinions, with most of the full-day return following an on-air buy recommendation captured by that day’s opening price. Trading strategy analysis suggests that individuals with limited funds should be wary of short-term trading to exploit the show’s suggestions.
From the conclusion: Heightened investor activity around stocks discussed on the show is indicated by statistically significant abnormal and raw returns, as well as trading volume increases, on both the day 0 air dates of buy recommendations and the day +1 trading day, with the day +1 effects being stronger as expected. However, since almost all of the average raw return on day +1 is captured in the difference between the day 0 close price and the day +1 opening price, a change likely induced by the weight of pending buy orders placed by viewer investors before the market opens, the average investor is unable to benefit from this effect and, further, the aggregate impact is to increase the cost of acting on these recommendations for all investors.
From the text: Table 6a (shown above, click to enlarge) shows that the 127 buy recommendations are distributed across twenty-eight different show air dates within our 7/26/2005 to 9/16/2005 sample. On each day, the $10,000 is allocated equally across all of the buy recommendations. Share purchases are rounded to the nearest whole share. As a result, the amount invested on each day is never exactly $10,000 but is more than $10,100 only twice. If an investor had executed this strategy twenty-eight times on the days covered in this sample, a loss of $861.32 would have been realized, not counting the per-trade commissions.
(MP: Add in $10 per trade for 127 buy orders, and your total loss would be $2,131.)
(HT: Mike Munger)