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Nasdaq-100 News 13 December 2025 - 18 January 2026

AstraZeneca stock: Nasdaq-100 exit date nears as index flows and JPM conference loom

AstraZeneca stock: Nasdaq-100 exit date nears as index flows and JPM conference loom

AstraZeneca will be removed from the Nasdaq-100 on Jan. 20, replaced by Walmart, Nasdaq said Friday. AstraZeneca shares rose 0.28% in London and 0.68% in New York after the announcement. Index funds are expected to adjust holdings near the effective date, potentially increasing trading volume. AstraZeneca management is set to speak at the JPMorgan Healthcare Conference starting Monday.
11 January 2026
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Invesco QQQ (QQQ) Sees New Institutional Position Shifts on Dec. 26 as Nasdaq-100 ETF Trading Resumes After Christmas

Invesco QQQ (QQQ) Sees New Institutional Position Shifts on Dec. 26 as Nasdaq-100 ETF Trading Resumes After Christmas

December 26, 2025 — A fresh wave of institutional disclosures published Friday shows investment advisers and money managers continuing to fine-tune exposure to the Invesco QQQ ETF (NASDAQ: QQQ), one of the market’s most closely watched proxies for the Nasdaq-100 and U.S. mega-cap growth stocks. The latest updates, drawn from SEC Form 13F filings covering the third quarter (Q3), show a mix of additions and trims—an outcome that underscores how QQQ remains a core portfolio building block even as investors debate the durability of the tech-led rally heading into 2026. MarketBeat Friday’s filings arrive in a market environment defined by
26 December 2025
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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+1 Why the heightened attention? Today was Western Digital’s first session as a newly added member of the Nasdaq-100, a structural change that can influence liquidity, passive flows, and short-term volatility—especially during a holiday-shortened week. Investing.com+1 Below is a detailed, news-driven breakdown of what happened after the bell on 22.12.2025, what’s driving the narrative right now, and what to keep on the
23 December 2025
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Alnylam Pharmaceuticals (ALNY) Stock After Hours: Nasdaq-100 debut, fresh catalysts, and what to watch before Tuesday’s open (Dec. 23)

Alnylam Pharmaceuticals (ALNY) Stock After Hours: Nasdaq-100 debut, fresh catalysts, and what to watch before Tuesday’s open (Dec. 23)

Dec. 22, 2025 — After the closing bell, Alnylam Pharmaceuticals, Inc. (NASDAQ: ALNY) is finishing the day in the spotlight for a reason that has nothing to do with a clinical readout—at least not directly. Monday marked the company’s first trading day as a Nasdaq-100 constituent, a mechanical event that can reshape near-term flows even when the underlying business story is unchanged. Here’s what happened in Monday’s session, what the after-hours tape is showing, and the key headlines, forecasts, and risk factors investors are weighing before the market opens Tuesday. ALNY today: a solid close, modest after-hours drift Alnylam shares
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 continuing digestion of last week’s brensocatib CRSsNP trial miss. StockAnalysis+2Mondo Visione+2 Below is what happened after the bell on Dec. 22, 2025, and the key items to know before U.S. markets open Tuesday, Dec. 23, 2025. INSM stock price after the bell: where shares finished and what after-hours trading showed Insmed closed regular trading on Monday, Dec. 22 at $175.76,
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. 22, 2025), WDC finished at $176.76, down $4.32 (-2.39%). In after-hours trading, the stock ticked up to $177.13 (+0.21%) as of 6:24 p.m. ET. Yahoo Finance+1 WDC after-hours: the numbers that matter tonight Even by WDC’s recent standards, Monday was volatile. That combination—big range, modest after-hours move—often signals a session driven more by positioning and flows than by a single
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 “last day to buy” window that arrives quickly, and a busy slate of U.S. economic releases before Tuesday’s open. STX stock price today: a volatile reversal into the close Seagate shares closed at $282.85 on Monday, Dec. 22, down $13.48 (-4.55%). The day was notably volatile: STX opened at $300.96, traded as high as $302.40, and fell as low as
23 December 2025
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Alnylam Pharmaceuticals (ALNY) Stock on Dec. 22, 2025: Nasdaq-100 Debut, AMVUTTRA Momentum, Analyst Price Targets and the 2026 Outlook

Alnylam Pharmaceuticals (ALNY) Stock on Dec. 22, 2025: Nasdaq-100 Debut, AMVUTTRA Momentum, Analyst Price Targets and the 2026 Outlook

Dec. 22, 2025 — Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY) is stepping into a new tier of market visibility today as its Nasdaq-100 Index membership takes effect ahead of the opening bell—an index catalyst that can influence near-term trading and broaden long-term institutional ownership. Nasdaq+1 ALNY was trading around $405.60 on Dec. 22 (time-stamped 16:37 UTC), up about 1.3% versus the prior close—an incremental move that nonetheless lands in the middle of a busier-than-usual news cycle for the RNAi leader. Below is a comprehensive roundup of the current news, forecasts, and market analysis circulating through Dec. 22, 2025, and what investors
22 December 2025
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Monolithic Power Systems (MPWR) Stock on Dec. 22, 2025: Nasdaq-100 Debut, Analyst Targets, Dividend, and Fresh Technical Signals

Monolithic Power Systems (MPWR) Stock on Dec. 22, 2025: Nasdaq-100 Debut, Analyst Targets, Dividend, and Fresh Technical Signals

Monolithic Power Systems, Inc. (NASDAQ: MPWR) is starting the week with a major visibility upgrade: MPWR is now officially part of the Nasdaq-100 Index, effective before the market opened on Monday, December 22, 2025. Nasdaq+1 For investors, the timing matters. Index additions can trigger mechanical buying from passive funds that track the Nasdaq-100—potentially boosting liquidity and short-term volatility—while MPWR’s fundamental story remains tied to power-management demand across AI data centers, automotive, storage/computing, and industrial markets. Nasdaq+1 Below is a detailed breakdown of today’s key news, the latest Wall Street forecasts, and current technical signals for MPWR—using the most recent information
22 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. As of the most recent close, ALNY last traded around $400.23, within a roughly $220–$500 52-week range. Below is what investors and traders typically want on their radar before the bell: the Nasdaq-100 inclusion effect, the latest regulatory and commercial momentum for Amvuttra, the most recent corporate/financial updates, and what Wall Street forecasts imply from here. What to know in
22 December 2025
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Insmed Incorporated (NASDAQ: INSM) Stock Week Ahead: Nasdaq-100 Addition Meets Brensocatib Setback—News, Forecasts, and What to Watch (Dec. 22–26, 2025)

Insmed Incorporated (NASDAQ: INSM) Stock Week Ahead: Nasdaq-100 Addition Meets Brensocatib Setback—News, Forecasts, and What to Watch (Dec. 22–26, 2025)

As of Sunday, December 21, 2025, Insmed Incorporated (NASDAQ: INSM) is heading into a pivotal (and holiday-shortened) trading week with two narratives pulling on sentiment at the same time: That push-pull dynamic is likely to define the week-ahead setup for INSM as markets reopen Monday. INSM stock snapshot heading into the week (as of Dec. 21, 2025) Because this coming week includes Christmas holiday trading conditions, liquidity can be thinner than normal—sometimes amplifying both index-related moves and any lingering “headline drift” from last week’s biotech news. The headline that sparked the volatility: brensocatib CRSsNP Phase 2b miss What happened On
21 December 2025
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Western Digital (WDC) Stock Week Ahead (Dec. 22–26, 2025): Nasdaq-100 Inclusion, Analyst Targets, and What to Watch

Western Digital (WDC) Stock Week Ahead (Dec. 22–26, 2025): Nasdaq-100 Inclusion, Analyst Targets, and What to Watch

Dateline: December 21, 2025 (Sunday) Western Digital Corporation (NASDAQ: WDC) heads into the week with a rare combination of index-driven demand and fundamental momentum. The headline catalyst is Western Digital’s addition to the Nasdaq-100, effective before the market opens Monday, December 22, 2025—a change that can trigger mechanical buying from passive funds and raise trading volume. Reuters+1 But this is also a holiday-shortened week, with U.S. stock markets scheduled for an early close on Wednesday, Dec. 24 (1:00 p.m. ET) and closed on Thursday, Dec. 25. Thin liquidity can magnify price moves—up or down—especially around major index events. Nasdaq+1 Below
21 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. As of early pre-market updates, QQQ was hovering around the $610 area, after closing Monday at $610.54, down about 0.5% on the day. StockAnalysis The ETF’s scale matters here: QQQ has roughly $409 billion in assets, meaning even modest index swings translate into significant dollar moves across portfolios. StockAnalysis QQQ price update: where the Nasdaq-100 ETF stands this morning Here are the key QQQ numbers investors are watching
16 December 2025
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Lululemon Stock (LULU) After Hours Today (Dec. 15, 2025): Price Action, Nasdaq-100 Exit, and What to Watch Before Tuesday’s Open

Lululemon Stock (LULU) After Hours Today (Dec. 15, 2025): Price Action, Nasdaq-100 Exit, and What to Watch Before Tuesday’s Open

Lululemon athletica inc. (NASDAQ: LULU) finished Monday’s session (December 15, 2025) modestly higher—and then barely budged in after-hours trading—leaving investors focused less on tonight’s tape and more on two bigger drivers heading into Tuesday’s open: index-related flows tied to Lululemon’s upcoming Nasdaq-100 removal and a data-heavy U.S. macro morning that could swing consumer discretionary stocks. LULU shares closed at $206.29 (+0.64%) and were slightly lower after hours at $206.20 (-0.04%) as of early evening trading, a quiet “after the bell” snapshot that suggests the market is still digesting last week’s earnings/leadership reset—and repricing what comes next. StockAnalysis Lululemon stock after
16 December 2025
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ProShares UltraPro QQQ (TQQQ) Stock: Latest News, Price Action, Nasdaq-100 Rebalance and 2026 Outlook (December 14, 2025)

ProShares UltraPro QQQ (TQQQ) Stock: Latest News, Price Action, Nasdaq-100 Rebalance and 2026 Outlook (December 14, 2025)

Updated: Sunday, December 14, 2025 ProShares UltraPro QQQ (NASDAQ: TQQQ) — the triple‑leveraged ETF designed to target 3x the daily performance of the Nasdaq‑100 — is back in the spotlight heading into a data-heavy week, after a sharp late‑week tech selloff reignited debate about AI-driven valuations, volatility, and the risks of holding leveraged ETFs beyond a single trading session. ProShares+2Investopedia+2 Key takeaways for today (Dec. 14, 2025) TQQQ price today: what it’s doing on December 14, 2025 Because U.S. markets are closed on Sunday, today’s “live” read for TQQQ starts with Friday’s final print. According to Financial Times market data,
14 December 2025
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Seagate Technology (STX) Stock: Weekly Recap and Week-Ahead Outlook as Nasdaq-100 Inclusion Looms (Updated Dec. 12, 2025)

Seagate Technology (STX) Stock: Weekly Recap and Week-Ahead Outlook as Nasdaq-100 Inclusion Looms (Updated Dec. 12, 2025)

Seagate Technology Holdings plc (NASDAQ: STX) ended the week with a classic “rip-and-dip” pattern that has become familiar across AI-adjacent hardware names in late 2025: a push to fresh highs, followed by a sharp reversal as tech sentiment cooled. STX closed Friday, Dec. 12, 2025 at $287.64, down 6.56% on the day after printing a new 52-week high of $308.93 on Thursday. Nasdaq+1 Heading into the week ahead (Dec. 15–19), Seagate now sits at the intersection of three powerful forces: index-driven demand (Nasdaq-100 inclusion announced after Friday’s close), AI infrastructure spending optimism vs. “AI bubble” jitters, and fundamental momentum powered
13 December 2025
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Stock Market Today

Applied Digital stock jumps 25% as AI data-center names rebound — what’s next for APLD

7 February 2026
New York, Feb 7, 2026, 09:30 EST — Market closed. Applied Digital Corporation shares closed up 25.52% on Friday at $34.95, after trading between $29.24 and $35.09 on the session. The stock was down about 1% in after-hours trading at around $34.60, according to delayed quotes. (Applied Digital Corporation) The surge puts the Nasdaq-listed data center operator back in focus heading into Monday, after a week in which investors started looking beyond the crowded “tech and AI” trade. “What’s driven it recently has been the broadening in the market beyond just the tech, AI trade,” said Chuck Carlson, chief executive
Eli Lilly stock pops as FDA targets cheap weight-loss copycats — what to know before Monday

Eli Lilly stock pops as FDA targets cheap weight-loss copycats — what to know before Monday

7 February 2026
Eli Lilly shares rose 3.7% to $1,058.18 Friday after the FDA said it would act against telehealth firm Hims & Hers for marketing a $49 compounded weight-loss pill. The move followed a sharp selloff Thursday when Hims announced plans to sell a version of Novo Nordisk’s Wegovy. Investors remain uncertain how aggressively regulators will police copycat drugs and pricing in the obesity drug market.
Saudi Aramco share price set for Sunday test after Tadawul ends market-making deal

Saudi Aramco share price set for Sunday test after Tadawul ends market-making deal

7 February 2026
Saudi Exchange approved Merrill Lynch KSA’s exit as market maker for Saudi Aramco, effective Feb. 8. Aramco shares closed at 25.60 riyals Thursday, down 0.06, with 22.1 million traded. The Tadawul index fell 1.3% as Brent crude dropped to $67.93. Aramco set March official selling prices at $2.10 above Argus for North America and $0.65 above ICE Brent for Western Europe.
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