Ongoing market rallies have been making headlines for weeks now, but lots of analysts have pointed out that underlying fundamentals can’t explain why so companies are doing so well. For investors looking for a good deal this is creating a major problem, as few stocks can justify their high prices and even fewer are undervalued by traditional measures, according to a recent Societe Generale report. Round up of investment screens Looking at a round-up of well-known investment screens including the Merton Model, Piotroski’s F-scores, Benjamin Graham’s deep-value screen and others, Andrew Lapthorne and his team at Societe Generale look for…