Since the price of my one stock increased, the yield has dropped to 4.67%. Now not sure to forgo dividend yield for the time being and take profit of $40,500
Congrats on your profit, you've done a great job!
You might have your own judgement to invest over 200k SGD in a single stock and in this case, you've strike a jackpot!
The current personal finance consensus is that investing in a single individual stock involves significant concentration risk. It's better to diversify over many stocks, preferably using a collective instrument such as a low-cost ETFs or Unit Trusts.
There're a few good choices within the CPF structure - such as STI ETF, or, those Lion Infinity or Amundi Unit Trusts. These low-cost funds guarantee "mediocrity" but they allow you to sleep soundly at night, which you rightly deserve.