The assessment is based on the high quality and relevance of the primary data sources provided. The statement makes a claim about a "specific trading period," which means it only needs to be true for at least one period to be validated. The most relevant sources provided are not articles with pre-digested conclusions, but rather authoritative financial data portals like MarketWatch, Nasdaq.com, Yahoo Finance, and CNN Markets. These tools are the exact primary sources one would use to verify such a claim by looking up historical data for the Dow, S&P 500, Nasdaq, Oracle (ORCL), and Nvidia (NVDA).Given the well-known positive correlation between major U.S. stock indices and their large-cap technology components (like Oracle and Nvidia), it is a very common market occurrence for all of them to increase in value during the same trading period, such as a strong trading day or week. The existence of multiple, highly authoritative tools designed to provide this specific data makes it overwhelmingly probable that such a period can be found.One source, a CNBC article, reports on a single day's market decrease. However, this does not contradict the statement. It merely shows one period where the statement was false, which does not negate the existence of another period where it was true. Other sources concerning derivatives (CME Group), or different stocks (Cisco, Marvell), are not relevant to the core claim. Therefore, the statement is supported by the high plausibility of the event and the availability of authoritative primary sources to confirm it.