".....interesting to see articles on which shares are reaching their peak and would be best sold....."
The replies beneath the original article gave plenty of warning that SGP were very overvalued as an investment and therefore suitable for speculators only - and would need constant monitoring, with a disciplined approach to cutting losses quickly.
".....expect to have to sell in the next year or two, as I do think they are likely to go out of fashion....."
Those are the words of a speculator, not an investor.
Your focus appears to be simply on finding a greater fool to take the shares off your hands at a price that will make you a handsome gain and they take the loss for you.
I suggest that you approach your investing by selecting sensibly-valued shares of good quality, resilient companies which you would be prepared to hold for a long time; to enjoy the dividends and the gradual uptrend in the shares which will occur if profits make good progress and assuming that the shares were bought at a sensible price.
As I pointed out last night:
In the late 1980's, Warren Buffett bought into Coke.
Nowadays, he receives an annual cash dividend payout almost as large as his entire purchase cost - and he still has the shares which have been dragged higher by those persistently-rising payouts; his shares are worth multiples of what was originally paid.
As Buffett says: "If you're not prepared to own the shares of a company for ten years, don't bother to own them for ten minutes".
Buy quality businesses at sensible prices (P/E ratio etc) and sit tight for the long term. Let the good business get on with making money.
Only consider switching investments if the business genuinely ceases to be good (not just a drop in the share price, but a decline in the companys financial strength), or if there is an equally good business available at a much more attractive price.