Lately, I've been pondering an interesting question—why do some people double their investments while others suffer huge losses? The difference lies in choosing the right growth stocks or value stocks.

In the past two years, since AI took off, many companies once considered sunset industries suddenly turned into growth stocks, and the U.S. stock indices soared accordingly. Many people around me are chasing stocks like TESLA and NVIDIA; their short-term gains are indeed tempting. But Warren Buffett has been consistently opposing this, insisting that value stocks are the true way to go. Who's right and who's wrong?

My understanding is that growth stocks refer to companies still expanding rapidly, with markets not yet saturated, offering unlimited prospects but also carrying unlimited risks. On the other hand, value stocks are about undervalued companies today, focusing on fundamentals and moats. One looks to the future, the other to the present—investment logic is completely different.

Take Amazon as an example: in 2000, its P/E ratio exceeded 100, which many thought was crazy. But looking back now, it’s incredibly cheap. A cautionary example is ZOOM: during the pandemic, it gained market share but couldn’t sustain such high valuations, and the bubble eventually burst. So, the key to investing in growth stocks isn’t just buying in but knowing when to exit.

When selecting growth stocks, I usually look at a few indicators. First, revenue growth rate should be stable above 20% annually. Second, the industry itself must have growth potential, not a saturated market. Lastly, valuation—long-term high valuation often indicates that big funds are optimistic about the company's prospects, which could be the next breakout point.

Regarding growth stock investment opportunities, I’ve noticed that Ark Invest CEO Cathie Wood’s recent focus areas are quite worth considering. She favors Google over NVIDIA in AI because companies providing applications have greater growth potential. In Bitcoin, she sees a huge growth space since global asset allocation to crypto is less than 1%, and Coinbase is also worth watching.

Digital finance is very interesting. SOFI is competing with traditional banks, and its projected annual revenue growth rate could stay between 20-25%. In healthcare, LLY has gained popularity due to GLP-1 weight-loss drugs. AI accelerates drug development, helping pharma cut costs, but prices are still rising—this is a long-term beneficiary industry.

Everyone knows the story of TESLA: every halving of battery costs results in a 28% price reduction, leading to exponential sales growth. In robotics, ROK, an automation company, has promising prospects, and AI-driven business opportunities are just beginning. 3D printing company PTC integrates hardware and software, and over the next seven years, its market could grow from $18 billion to $180 billion—this is what real growth stock opportunity looks like.

But a special reminder: not all companies in growth industries benefit equally. Sometimes, the market fears missing out, and related stocks get hyped up temporarily. Investors need to discern which companies have genuine performance support and which are just riding the trend. Also, even with solid fundamentals, high valuations require caution because a high P/E ratio means the market has already priced in future growth.

Growth stocks are indeed volatile, but opportunities and risks coexist. The key is to pick truly growing companies and exit at the right time to lock in profits. If you want to participate in growth stocks, besides stock selection, risk management is crucial. Don’t allocate too much to growth stocks; they should be balanced with value stocks and stable assets. Only then can you build wealth more steadily on the road ahead.