The Graham Number of Groupe Open SA (OPN.PA) is 11.69.
Graham Number estimates the fair value of a stock using both earnings and book value per share. It is commonly used by value investors to identify undervalued stocks.
| Date | Value | 
|---|---|
| 2020-12-31 | 11.69 | 
| 2019-12-31 | 9.45 | 
| 2018-12-31 | 20.62 | 
| 2017-12-31 | 18.42 | 
| 2016-12-31 | 21.49 | 
| 2015-12-31 | 18.03 | 
| 2014-12-31 | 13.49 | 
| 2013-12-31 | 11.12 | 
| 2012-12-31 | 12.45 | 
| 2011-12-31 | 9.11 |