Major U.S. stock indices ended the day mixed, giving up earlier gains despite weekend news of a U.S.-EU tariff agreement. The S&P 500 oscillated around unchanged, while the Dow Jones Industrial Average remained in negative territory for most of the session.With a loaded week ahead—including the FOMC rate decision, Friday’s U.S. jobs report, and second-quarter GDP on Wednesday—investors appeared cautious but still pushed some sectors (chips were strong). Nevertheless, market uncertainty remains elevated, particularly over how the new tariff structure might impact inflation moving forward. That can also "feed the bullish beast" - especially if the undervested continue to miss out on gains. Adding to the focus, earnings season kicks into high gear with four of the Magnificent 7 set to report: Amazon and Apple (Thursday), and Meta and Microsoft (Wednesday). Central bank action will also be in play, as the Bank of Canada and Bank of Japan are both set to announce rate decisions.Closing snapshot:Dow: -64.36 points (-0.14%) at 44,837.56S&P 500: +1.13 points (+0.02%) at 6,389.77NASDAQ: +70.27 points (+0.33%) at 21,178.58Russell 2000: -4.34 points (-0.19%) at 2,256.72Some of the winners today included:Super Micro Computer (SMCI): +10.24% – AI/data center name leading gains; strong momentum continues.AMD (AMD): +4.33% – Chip stock lifted by EU/US trade agreement excluding tariffs on semiconductors.Nike (NKE): +3.89%. Upgraded by JPMorgan to Buy with price target at $93Tesla (TSLA): +3.02%ASML ADR (ASML): +2.67% – Dutch semiconductor equipment giant, directly benefiting from US/EU chip tariff relief.Exxon Mobil (XON): +2.62% – Crude rally on tighter supply outlook and new Russian sanctions supported gains.Tapestry (TPR): +1.92%Shopify Inc (SHOP): +1.91%Occidental (OXY): +1.88% – Crude-linked; supported by oil price surge.NVIDIA (NVDA): +1.87% – Chipmaker also likely lifted by tariff deal and solid tech sentiment.Robinhood Markets (HOOD): +1.83%Roblox (RBLX): +1.80%Alibaba ADR (BABA): +1.77%Lam Research (LRCX): +1.71% – Semiconductor equipment maker; positive chip sentiment.Qualcomm (QCOM): +1.69% – Beneficiary of chip-sector rebound.Intuit (INTU): +1.65%. New record high.United Airlines Holdings (UAL): +1.45%Boeing (BA): +1.42%Schlumberger (SLB): +1.49%Delta Air Lines (DAL): +1.37%Broadcom (AVGO): +1.37% – Another chip name gaining from trade optimism.Another day. Another record. This article was written by Greg Michalowski at investinglive.com.