On 9 July, I issued a buy recommendation for SL Green (NYSE: SLG ), arguing that despite a great run year to date, the stock was still undervalued on a net asset value and historical Price/FFO basis. I estimated SLG's I am a UK-based long-only investor with a strategy which revolves around finding companies which can be multi-baggers over a 5-10 year time horizon, though, as a great man once said, my favourite holding period is forever. I am looking for companies that have a high probability of substantial ...