The statement that the Nasdaq stock index closed higher than its opening value is strongly supported by several primary and authoritative sources. The official Nasdaq Global Index Watch and Nasdaq Global Index history pages provide verified daily performance data, including both opening and closing levels, which confirm that the index ended the trading session above its opening price. Complementary news reports from Nasdaq, such as those describing a session where 'stock indexes settled higher on strength in tech' and 'stocks settled higher as SCOTUS rejects tariffs,' further corroborate a positive market close driven by gains in major technology shares. These official market summaries are consistent with the historical data shown in the Nasdaq index records. No directly conflicting evidence appears among the provided sources, and weaker or tangential sources that discuss other trading days do not contradict the conclusion. Considering the agreement between multiple high-authority official data sources and Nasdaq’s own reporting, the evidence strongly supports that the Nasdaq index closed higher than it opened on the specified day.