Hi everyone, is building a portfolio in stocks or unit trust better?

One key to build a good whole investment portfolio is diversification.
As Hariz mentioned, a stock cannot replicate a unit trust.

How much you allocate towards unit trusts and stocks should be aligned to your desired portfolio strategy and risk profile taking into account your life stages, etc.

There are people that are heavier in unit trusts while there are also others that are heavier in stocks. It boils down to their strategy and risk profile.

It will be beneficial for you to think through whats your strategy and risk profile. This will help you to decide your allocation.

Aim to build well diversified investment portfolio. A well diversified portfolio as much as one can, should be diversified across the 6 major asset classes.

Yes,why not,you can branch out to othher area such as STI ETF or bond ETF:http://sonicericsg.blogspot.com/2019/02/post-79... ,currently most SG stock are hit hard by the trade war,hence you can also consider US stock
Tip 1: Long-Only Investing for Retail Investors

• Invest in Stock & Bond ETFs.
• For Singapore Stock & Bond ETFs, that's ES3 & A35.
•  Use 110 - your age for the Stocks: Bond ETF ratio.
• Remember to rebalance once every year. (i seldom rebalance though)
• Buy & Sell to bring your stocks & bonds to that 110 - your age ratio.
• Consider exposure in other markets, e.g.. S&P500, China Large-Cap ETFs, etc., for diversification & growth
•  If an ETF shuts down, its assets get handed back to the shareholders.
•  A 100%-equities portfolio is also a bad idea.
•  STI's more tightly linked with economies like China and Malaysia and Indonesia than it is with the US and EU.
• In the long run, an investor's return is measured as earnings per share growth + dividends + changes in valuation(PE ratio).