My view
The biggest lesson is valuation matters as much as the company itself.
A good company can still be a bad buy if the stock is too expensive.
Netflix and Target show that improving fundamentals can create opportunities.
Moderna and Exxon show that even strong companies can be downgraded after a big price increase.
AI is spreading beyond chips into networking, software and even travel.
Analyst ratings are opinions, not guarantees. Always ask: Did the business improve, or did the stock simply become cheaper/more expensive?
Bottom line: I would not buy a stock just because an analyst says “Buy.” I would look at business growth + valuation + cash flow first. For a beginner, buying good companies at a reasonable price is more important than following weekly analyst changes.