This is a short-selling strategy based on Professor Beneish's M-Score - this is a mathematical model that uses eight financial ratios from the company's financial statements to assess the degree to which the earnings may have been manipulated. It is similar to the Altman Z-Score, but it is focused on detecting earnings manipulation rather than bankruptcy. The research suggests that a score less negative than -1.78 indicates a strong likelihood of a firm being a manipulator. Here is the link to the original Detection of Earnings Manipulation paper as well as the subsequent paper - The Relation between Accruals and Earnings Manipulation. The screen below highlights companies that have had a M-score above the threshold for two years in a row in order to reduce the likelihood that a given year's result is coincidental or a rogue data input error. To learn more about this strategy please click here »
Professor of Accounting at the Kelley School of Business, Indiana University.
Detection of Earnings Manipulation
by Messod Beneish
In his "Detection of Earnings Manipulation" paper, Beneish found that the M-Score test could correctly identify 76% of manipulators, whilst only incorrectly identifying 17.5% of non-manipulators. In a subsequent 2007 paper - The Predictable Cost of Earnings Manipulation - Beneish examines the use of the M score as a stock selection technique (over the period 1993-2003). The M-score strategy apparently generated a hedged return of nearly 14% per annum.
Results are sorted by:
And limited to the first 200 Results
| Timeframe | Screen Returns | FTSE 100 | Outperformance |
|---|---|---|---|
| 1 week | 0.33% | 2.60% | -2.3% |
| 1 month | 2.03% | 8.23% | -6.2% |
| 3 months | -8.35% | 6.66% | -15.0% |
| 6 months | 0.34% | 18.37% | -18.0% |
| 1 year | -12.66% | 29.17% | -41.8% |
| Since inception | -11.98% | 26.8% | -38.8% |
| Annualised | -8.51% |
| Maximum Drawdown | -31.26% |
| Average No. of Holdings | 21.7 |
| Diversification Level | Good |
Chart based on an equal weighted portfolio of max 25 stocks rebalanced quarterly. Qualifying shares below updated daily. Past performance not indicative of future returns.
Please note that 'short selling' strategies are designed to underperform the market - they are best used for hedging long portfolios rather than for absolute negative returns.
Can't see the share you expect? View this screen as a checklist to find out why.