Bought AMD and INTEL 9 months ago (Intel at $30 per share for 172 shares and AMD at $153 for 40 shares). Need advice on next steps.

Since I have bought into Intel and AMD, the stocks have close to 3x or more. I have gotten mixed advice as to whether I should let these individual stocks run or to trim the gains and put the gains into safe ETFs such as SPYM, VEU, and VTV. Is there a benefit (I am 28 years old) to letting these run and take on the risk? Each stock now is around 20% of my portfolio due to the gains. I can also take all new investable money and put them into safe ETFs to balance out the percentages if they sentiment is to hold. Thoughts?