$Micron Tech(MU.US)$SK Hynix(SKHY.US)Sold off a bit of SK Hynix yesterday, mostly kept Micron. Bullish on memory stocks, felt SK Hynix's valuation was low enough. But actually, for stocks and companies, the first thing is the country. When investing in US stocks, you must buy purely American companies. I won't consider companies from other countries in the future, just like you shouldn't buy Chinese concept stocks in the US market; it's all tuition fees paid in the past.