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Nasdaq-100 News 16 December 2025 - 26 December 2025

Western Digital (WDC) Stock After Hours on Dec. 22, 2025: Nasdaq-100 Debut, Today’s Headlines, Analyst Forecasts, and What to Watch Before Tuesday’s Open

Western Digital (WDC) Stock After Hours on Dec. 22, 2025: Nasdaq-100 Debut, Today’s Headlines, Analyst Forecasts, and What to Watch Before Tuesday’s Open

Western Digital Corporation (NASDAQ: WDC) is ending Monday’s session in the spotlight—but not for a simple “up day.” The stock closed regular trading on Dec. 22 at $176.76, down 2.39%, and then held roughly steady in after-hours action. Finviz Why
23 December 2025
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Insmed (INSM) Stock After Hours Today (Dec. 22, 2025): Closing Price, Nasdaq-100 Effect, Fresh Forecasts, and What to Watch Before Tuesday’s Open

Insmed (INSM) Stock After Hours Today (Dec. 22, 2025): Closing Price, Nasdaq-100 Effect, Fresh Forecasts, and What to Watch Before Tuesday’s Open

Insmed Incorporated (NASDAQ: INSM) ended Monday’s session slightly higher and then traded in a tight range after the closing bell, as investors weighed two forces that have been shaping the stock into year-end: Nasdaq-100 inclusion (effective today) and the market’s
23 December 2025
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Western Digital (WDC) Stock After Hours Today (Dec. 22, 2025): Post-Close Update, Nasdaq-100 Impact, and What to Watch Before Tuesday’s Open

Western Digital (WDC) Stock After Hours Today (Dec. 22, 2025): Post-Close Update, Nasdaq-100 Impact, and What to Watch Before Tuesday’s Open

Western Digital Corporation (NASDAQ: WDC) ended Monday’s session lower, then steadied in after-hours trading—setting up an eventful Tuesday morning as investors balance index-related flows, holiday-thinned liquidity, and a packed U.S. economic calendar. As of the 4:00 p.m. ET close (Dec.
23 December 2025
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Seagate Technology Holdings plc (STX) Stock After Hours on Dec. 22, 2025: Nasdaq‑100 Inclusion, Dividend Deadline, and What to Watch Before the Dec. 23 Market Open

Seagate Technology Holdings plc (STX) Stock After Hours on Dec. 22, 2025: Nasdaq‑100 Inclusion, Dividend Deadline, and What to Watch Before the Dec. 23 Market Open

Seagate Technology Holdings plc (NASDAQ: STX) ended Monday’s regular session sharply lower even as the broader market started the holiday week in positive territory—and investors are now turning their attention to three near-term catalysts: lingering Nasdaq‑100 reconstitution effects, a dividend
23 December 2025
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Alnylam Pharmaceuticals (ALNY) Stock: Nasdaq-100 Entry, Amvuttra Momentum, Analyst Targets and Key Risks to Know Before the Dec. 22, 2025 Market Open

Alnylam Pharmaceuticals (ALNY) Stock: Nasdaq-100 Entry, Amvuttra Momentum, Analyst Targets and Key Risks to Know Before the Dec. 22, 2025 Market Open

Ahead of the U.S. stock market open on Monday, December 22, 2025, Alnylam Pharmaceuticals, Inc. (NASDAQ: ALNY) is stepping into a new spotlight—not just for biotech fundamentals, but also for a major index catalyst that can reshape short-term trading dynamics.
22 December 2025
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QQQ Stock Price Today (Dec. 16, 2025): Nasdaq-100 ETF Wavers Ahead of Delayed Jobs Data, Rate-Cut Debate, and “AI Blues”

QQQ Stock Price Today (Dec. 16, 2025): Nasdaq-100 ETF Wavers Ahead of Delayed Jobs Data, Rate-Cut Debate, and “AI Blues”

Invesco QQQ Trust (NASDAQ: QQQ) — the flagship ETF that tracks the Nasdaq-100 — is starting Tuesday, December 16, 2025 with investors laser-focused on a rare mix of catalysts: delayed U.S. employment data, shifting Federal Reserve rate-cut expectations, and renewed scrutiny around AI-heavy mega-cap valuations.
16 December 2025
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