撰写机构级个股投资研究报告（二级市场深度研究）。Use whenever the user wants to research, analyze, or value a specific publicly-traded stock — e.g. "研究/分析一下某只股票（公司名或代码）"、"帮我看看 NVDA 值不值得买"、"给某只股票写一份投研报告/研报"、"is this stock a buy / overvalued / fairly valued"，或针对某个具名上市公司询问 估值/护城河/财报/目标价/多空逻辑/投资建议（valuation, moat, fundamentals,
撰写机构级个股投资研究报告（二级市场深度研究）。Use whenever the user wants to research, analyze, or value a specific publicly-traded stock — e.g. "研究/分析一下某只股票（公司名或代码）"、"帮我看看 NVDA 值不值得买"、"给某只股票写一份投研报告/研报"、"is this stock a buy / overvalued / fairly valued"，或针对某个具名上市公司询问 估值/护城河/财报/目标价/多空逻辑/投资建议（valuation, moat, fundamentals, fair value, price target, bull/bear case），以及财报/季报/年报/业绩会/电话会/指引更新/earnings review/results/10-Q/10-K