Nvidia (NASDAQ: NVDA) may be flashing the ‘biggest green flag’ in stock investing, potentially positioning the technology giant to target new highs, possibly even the $200 level.Specifically, this bullish signal lies in the fact that as the company’s shares rise, its valuation multiple continues to shrink.Data from charting platform TrendSpider shows that Nvidia’s stock has surged from around $48 in late 2022 to nearly $177 in September 2025, marking an explosive run. Over the same period, the company’s tra ...