Equally you may say that it could be dangerous to rely on historic information to predict the future performance. Some posters continue to do that here including the people you recommend
Other more modern investors (I dare to say) look at what is going on right now in SGH. Restructuring for the future and new owners who want a high share price in less than two years (I believe from memory).
Sell/buy/hold is up to each investor based on their own circumstances. I think it is irresponsible to provide investing advice on this forum.
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