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Stock Market News 8 January 2026

Ciena stock tumbles 14% as AI-networking names retreat — what investors watch next

Ciena stock tumbles 14% as AI-networking names retreat — what investors watch next

Ciena shares fell 14% to $222.73 Thursday after an early spike to $260, with about 2.8 million shares traded by early afternoon. Lumentum dropped 11% and Coherent 9% as tech stocks slid ahead of Friday’s U.S. jobs report. CEO Gary Smith sold 83,552 shares on Jan. 5 at an average $229.44. Ciena will present at the Needham Growth Conference on Jan. 13.
8 January 2026
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Merck stock climbs on Wolfe upgrade as Cidara deal closes and Gardasil questions linger

Merck stock climbs on Wolfe upgrade as Cidara deal closes and Gardasil questions linger

Merck shares rose 1.5% to $110.20 after Wolfe Research upgraded the stock and set a $135 price target. Merck completed its $221.50-per-share tender offer for Cidara and flagged a $9 billion R&D charge for 2026. Investors watched fallout from a U.S. shift to a single-dose HPV vaccine recommendation ahead of Merck’s Feb. 3 results.
8 January 2026
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Lumentum (LITE) stock plunges 11% as AI-optics names slide despite Needham’s $470 target

Lumentum (LITE) stock plunges 11% as AI-optics names slide despite Needham’s $470 target

Lumentum shares fell 10.9% to $350.22 Thursday after hitting $399.88 earlier, with over 11 million shares traded by early afternoon. Needham raised its price target to $470, naming Lumentum a 2026 “top pick.” The drop followed a sharp rally and coincided with declines in Coherent and Ciena. Investors await Friday’s U.S. jobs report and Lumentum’s Feb. 3 earnings.
8 January 2026
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Bitcoin price today steadies near $91,000 as Strategy stock climbs on MSCI index reprieve

Bitcoin price today steadies near $91,000 as Strategy stock climbs on MSCI index reprieve

Bitcoin rebounded to $91,152 after dipping below $90,000, while shares of Strategy rose 4.7% as MSCI paused plans to exclude crypto treasury firms from its indexes. Marathon Digital gained 3.8%, Coinbase edged up 0.6%, and Riot Platforms slipped 0.5%. U.S. spot bitcoin ETFs saw $486 million in net outflows Wednesday. Traders awaited Friday’s U.S. jobs report for direction.
8 January 2026
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Abivax stock slides 9% after Sofinnova flags $134m sale plan, with 2026 trial clock ticking

Abivax stock slides 9% after Sofinnova flags $134m sale plan, with 2026 trial clock ticking

Abivax shares fell 9.49% to 99.20 euros in Paris on Thursday, reversing a 6% gain from the previous day. Volume reached about 246,000 shares amid anticipation of Phase 3 trial results for obefazimod in late Q2 2026. A U.S. Form 144 filing showed Sofinnova Crossover I SLP intends to sell up to 1,000,000 ADS. BTIG raised its price target on Abivax to $150 and maintained a “Buy” rating.
8 January 2026
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Exxon Mobil stock (XOM) rises as filing flags Q4 upstream hit from weaker crude; Jan 30 next

Exxon Mobil stock (XOM) rises as filing flags Q4 upstream hit from weaker crude; Jan 30 next

Exxon Mobil shares rose 3.3% to $122.42 by early afternoon Thursday after the company warned that lower crude prices could cut fourth-quarter upstream earnings by $0.8 billion to $1.2 billion from the prior quarter. Exxon said stronger refining margins may add $0.3 billion to $0.7 billion. The company reports results Jan. 30. Traders are watching oil price swings and estimate changes.
8 January 2026
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Teleflex (TFX) stock dives on CEO exit and revenue forecast cut — what investors watch next

Teleflex (TFX) stock dives on CEO exit and revenue forecast cut — what investors watch next

Teleflex shares fell 11.7% to $111.76 Thursday after the company announced CEO Liam Kelly’s exit and cut its 2025 revenue forecast. Stuart Randle was named interim chief executive, with a $140,000 monthly stipend and $1.5 million in stock. Teleflex cited weak demand for balloon pumps and OEM order delays. The company expects to report full results in late February or early March.
8 January 2026
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Why Applied Optoelectronics (AAOI) stock is down today as tech pulls back

Why Applied Optoelectronics (AAOI) stock is down today as tech pulls back

Applied Optoelectronics (AAOI.O) dropped 14.9% to $32.40 in Thursday afternoon trading, with 6.2 million shares traded and an intraday low of $31.70. The decline followed a broader selloff in tech stocks, leaving the Nasdaq down 0.5% midday. Optical networking peers Ciena, Lumentum, and Coherent also fell sharply. Investors are watching Friday’s U.S. payrolls report and AAOI’s earnings update in late February.
8 January 2026
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Silver price stock SLV slides as index rebalance selling kicks in ahead of U.S. jobs report

Silver price stock SLV slides as index rebalance selling kicks in ahead of U.S. jobs report

iShares Silver Trust dropped 3.5% to $68.50 in midday New York trading, tracking a broader selloff in silver assets as spot silver fell 2.5% to $76.19 an ounce. Traders cited commodity index rebalancing and a stronger dollar ahead of Friday’s U.S. payrolls report. Silver miners slipped less, down 0.4% to 1%. Sterling weakened for a third day as the dollar firmed.
8 January 2026
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Dow Jones ETF DIA rises as tech slips and Trump defense headlines jar Wall Street before payrolls

Dow Jones ETF DIA rises as tech slips and Trump defense headlines jar Wall Street before payrolls

The SPDR Dow Jones Industrial Average ETF Trust rose 0.6% to $492.73 Thursday as the Dow climbed 304 points, while the Nasdaq slipped on tech losses. Weekly jobless claims increased to 208,000 and continuing claims reached 1.914 million. Defense stocks rebounded after President Trump proposed a $1.5 trillion military budget for 2027. Investors await Friday’s U.S. nonfarm payrolls report.
8 January 2026
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Regencell Bioscience (RGC) stock slides about 18% after five volatility halts on Nasdaq

Regencell Bioscience (RGC) stock slides about 18% after five volatility halts on Nasdaq

Regencell Bioscience shares plunged 18.5% to $43.10 Thursday after hitting $69.97 earlier in the session, triggering five volatility halts. Over 3 million shares traded by early afternoon, far above average. The company has warned of “substantial doubt” about its ability to continue operating and reported net losses of $3.58 million for the year ended June 2025. No company statement explained the sharp swings.
8 January 2026
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Why Westlake stock is jumping today after its ACI deal filing

Why Westlake stock is jumping today after its ACI deal filing

Westlake Corp shares rose 7.4% to $79.98 Thursday after the company said it completed its acquisition of ACI/Perplastic Group’s global compounding solutions businesses. The deal expands Westlake’s manufacturing into Portugal, Romania, and Tunisia. Financial terms were not disclosed. Other major U.S. chemical stocks also gained.
8 January 2026
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UnitedHealth Group Incorporated stock rises as House summons insurer CEOs; investors eye two January dates

UnitedHealth Group Incorporated stock rises as House summons insurer CEOs; investors eye two January dates

UnitedHealth shares rose 1.3% to $346.11 after U.S. House lawmakers called major health insurer CEOs to testify on coverage affordability January 22. Senators Wyden and Warren accused UnitedHealth of withholding documents in a nursing-home probe, setting a January 28 deadline. TPG is in advanced talks to buy UnitedHealth’s Optum UK unit for up to £1.4 billion, Sky News reported.
8 January 2026
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Stock Market Today

Tower Semiconductor stock jumps again on Nvidia optics tie-up as earnings near

Tower Semiconductor stock jumps again on Nvidia optics tie-up as earnings near

8 February 2026
Tower Semiconductor shares rose 7.7% to $139.04 Friday after announcing a collaboration with Nvidia on AI data-center networking. The stock touched $141 intraday and gained another 1% after hours. Investors await Tower’s Feb. 11 earnings for details on its silicon photonics work. No financial terms or shipment timeline were disclosed.
Longsys Electronics stock heads into Monday after new guarantees; what 301308 investors watch next

Longsys Electronics stock heads into Monday after new guarantees; what 301308 investors watch next

8 February 2026
Longsys disclosed new guarantees for a 100 million yuan Hong Kong loan and a $9 million Brazil credit line, bringing its total approved guarantee quota to 11 billion yuan and outstanding guarantees to 5.81 billion yuan. The company said all guarantees are for consolidated subsidiaries and within approved limits. Shares closed at 288 yuan Friday, down 1.6%. China inflation and credit data are due this week.
MACOM stock price steadies near highs into Monday after earnings pop and fresh filings

MACOM stock price steadies near highs into Monday after earnings pop and fresh filings

8 February 2026
MACOM shares rose 3.5% to $235.87 Friday after the company reported fiscal Q1 revenue of $271.6 million and raised its full-year data center growth outlook to 35–40%. Fidelity’s FMR LLC disclosed a 10.7% stake, while shareholder Susan Ocampo filed to potentially sell up to 100,000 shares. Stifel raised its price target to $255. MACOM expects to repay $161 million in convertible notes in March.
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