All time highs are the tops, the pricing pinnacle representing the highest value a company's stock has ever reached. There are two ways to take in this information: the first is that this company is doing exceptionally well, and so will therefore continue to do exceptionally well in the immediate future. The other way to look at it though, is that this business has reached the top and it's likely to all go downhill from here. Either way Luxembourg Companies — one of the options you can consider for investing, here's the list. As ever — the devil is in the detail — so do your research before deciding if it's to be the former or the latter.