The markets opened up sharply lower after the Trump news conference yesterday, but rebounded with the broader indices closing in positive territory. At session lows:S&P was down -100.38 pointsNASDAQ index was down -469.63 pointsThey are closing near the highs: S&P index is up 7.36 points or 0.11% at 6582.68NASDAQ index is up 38.23 points or 0.18% at 21879.18The Dow industrial average fell -61.01 points or -0.13% at 46504.60.For the holiday shortened trading week the major indices had their best week since November 24, 2025:Dow industrial average rose 2.96%S&P index rose 3.36%NASDAQ index rose 4.44%Here's a breakdown of some of the week's top performers, grouped by sector:💾 Technology & SemiconductorsSanDisk — +16.38% (week) / +1.33% todayCiena Corp (CIEN) — +15.41% / +7.79% today ⭐ strongest daily + weekly comboIntel — +14.17% / +4.83% todayMarvell — +9.65% / +0.37% todayWestern Digital — +7.96% (down -0.88% today, fading late week)🎮 Consumer & EntertainmentRoblox — +11.07% / +3.78% todayPapa John's — +7.20% / +6.64% today (most of gains came today)🏭 Industrials & DefenseDefiance Drone & Modern Warfare ETF (JEDI) — +9.67% / +6.35% todayBAE Systems PLC — +8.45% (down -1.17% today, pulled back)Boeing — +7.15% / +0.45% today🥇 Gold & CommoditiesNewmont Goldcorp — +14.79% / +0.23% todayBarrick Mining — +11.21% (down -1.23% today)SPDR Gold Shares (GLD) — +7.16% / -1.94% todaySPDR Gold MiniShares — +7.14% / -1.92% todayiShares Gold — +7.13% / -1.94% today🔧 Materials & Tech HardwareCorning (GLW) — +9.29% / +3.87% todayKey Takeaways for the week's winners:Gold had a strong week overall but is pulling back today, suggesting some profit-takingTech/semis are the week's biggest theme — SanDisk, Ciena, and Intel all up 14%+Defense remains a multi-day trend with JEDI and BAE both showing strong weekly gainsCiena is the standout of the entire list — a top performer both today AND for the weekLooking at the losers this week, 🛡️ Defense & AerospaceRaytheon — -17.17% (flat today, but brutal week)Gemini Space Station — -6.10% / +0.58% today👟 Consumer & RetailNike — -15.13% / -1.00% todayAirbnb — -4.70% / -0.24% todayCelsius — -4.30% / -0.79% todaySouthwest Airlines — -4.86% / -1.62% todayAlaska Air — -4.16% / -0.85% today💊 Biotech & HealthcareBoston Scientific — -10.49% (bouncing +1.31% today)Moderna — -8.12% / -1.62% todayBiogen — -7.17% / -3.49% todayTeladoc — -4.35% / -0.09% today💻 Tech & SoftwareStrategy — -9.81% / -2.35% todaySnowflake — -6.49% / -0.86% todayFigma — -4.15% (rebounding +3.97% today)Ambarella — -4.04% / -1.06% today🏗️ Energy, Industrials & HousingSLB NV — -5.51% / -1.20% todayLennar — -5.07% (bouncing +1.22% today)Chevron — -4.26% (recovering +0.77% today)General Motors — -4.03% / -3.32% todayKey Takeaways for the losersRaytheon is the biggest loser of the week at -17%, notable since defense peers like BAE and JEDI were winners — likely a company-specific issueBiotech is broadly under pressure — Moderna, Biogen, and Boston Scientific all down significantlyAirlines are having a rough week with both Southwest and Alaska Air slidingA few green shoots today — Figma, Boston Scientific, Lennar, and Chevron are bouncing, suggesting possible short-term bottomingNike's -15% is a major move for such a large consumer brand — worth watching This article was written by Greg Michalowski at investinglive.com.