Today: 29 April 2026
Browse Category

NASDAQ:CIEN 29 December 2025 - 28 April 2026

Ciena Stock Slides as AI Networking Boom Faces a Tough Test

Ciena Stock Slides as AI Networking Boom Faces a Tough Test

Ciena shares fell 6.5% to $473.46 Tuesday afternoon, tracking declines in other optical-networking stocks after Corning’s second-quarter sales outlook missed Wall Street estimates. Corning shares dropped over 5% despite reporting 36% growth in first-quarter optical sales. Ciena’s recent results remain strong, but its order backlog has outpaced supply and the stock trades at a high valuation.
28 April 2026
··
Ciena Corporation Stock Swings After Insider Sale Filing as AI Networking Boom Gets Tested

Ciena Corporation Stock Swings After Insider Sale Filing as AI Networking Boom Gets Tested

Ciena shares rose 3.5% to $401.61 Friday after a Form 144 filing showed Blue Planet head Joe Cumello plans to sell 1,773 shares. The filing follows record Q1 revenue of $1.43 billion and a raised 2026 sales outlook. Cumello previously sold 11,929 shares in January for $2.74 million. Ciena’s stock has swung sharply this week, hitting a high of $446.89 and a low of $387.40.
29 March 2026
··
Corning stock slides after Broadcom warns AI racks will stick with copper longer

Corning stock slides after Broadcom warns AI racks will stick with copper longer

Corning shares dropped 4.4% Thursday after Broadcom CEO Hock Tan said customers will stick with copper, not optical links, inside AI racks for now. Corning CFO Ed Schlesinger warned of a slower “scale-up” for AI networking, pointing to a possible inflection closer to 2028. Broadcom stock rose 5.3%, while Ciena fell 15.2%. Analysts see co-packaged optics adoption delayed by at least two years.
5 March 2026
···
Ciena stock jumps about 6% as tech rebounds; CIEN traders eye March catalyst

Ciena stock jumps about 6% as tech rebounds; CIEN traders eye March catalyst

Ciena Corp shares rose about 6% to $267.26 by early afternoon Monday after an earlier drop, rebounding alongside other networking stocks like Corning and Nokia. The move followed analyst upgrades and news of new fiber projects in the Balkans. Wall Street’s tech sector gains came as metals prices fell sharply. Investors are watching for updates at the Mobile World Congress in early March.
2 February 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
·····
Lumentum stock slides 8% as optics peers stumble; investors eye February earnings update

Lumentum stock slides 8% as optics peers stumble; investors eye February earnings update

Lumentum Holdings shares dropped 7.6% to $356.69 Monday afternoon, leading declines among optical networking stocks as Coherent, Ciena, and Applied Optoelectronics also fell. The selloff followed a sharp rally that brought Lumentum near its December peak, with trading volume at 4.9 million shares by 3:24 p.m. EST. Investors are watching upcoming earnings and industry events for signs of continued AI-driven demand.
5 January 2026
·····
Lumentum stock rises 4% as AI data‑center optics rally kicks off 2026

Lumentum stock rises 4% as AI data‑center optics rally kicks off 2026

Lumentum shares climbed 4.3% to $384.31 Friday afternoon, outperforming the broader market as optical and AI hardware stocks rallied. The stock traded between $374.87 and $391.92 during the session. Sector peers Coherent and Ciena also posted gains. Traders are watching for upcoming U.S. jobs and inflation data next week.
2 January 2026
·····
AAOI stock jumps 13% today as AI optics names rally and short interest stays high

AAOI stock jumps 13% today as AI optics names rally and short interest stays high

Applied Optoelectronics shares jumped 13% to $39.55 in midday trading Friday, following a previous close of $34.86. Short interest stands at 12.7 million shares, about one-fifth of the float, raising short squeeze risk. The company last forecast Q4 revenue of $125 million to $140 million and reported its first major 800G transceiver order in December. Next earnings are expected Feb. 25.
2 January 2026
···
Lumentum stock tumbles as year-end tech pullback hits AI optics names

Lumentum stock tumbles as year-end tech pullback hits AI optics names

Lumentum Holdings shares fell 4.1% to $374.87 by midday Monday, outpacing declines in tech benchmarks and optical peers. The stock swung between $390 and $364.50, retreating from last week’s 52-week high. Coherent and Ciena also dropped, but by less than Lumentum. Investors trimmed exposure to AI-linked names ahead of the New Year, with trading volumes thin and markets watching Fed minutes and jobless claims.
29 December 2025
·····

Stock Market Today

  • UAE Exit from OPEC Cuts Group's Global Oil Share, Boosts Saudi Influence
    April 28, 2026, 9:21 PM EDT. The UAE's departure from OPEC and OPEC+ reduces the group's global oil production share from 47% to 42%, significantly increasing Saudi Arabia's control over output policies. This shift could weaken OPEC's cohesion, potentially encouraging other members to leave or deviate from quotas, heightening oil price volatility. Despite short-term constraints on UAE oil exports due to the Strait of Hormuz closure, a reopening could allow an additional 1 million barrels per day, boosting UAE GDP by an estimated 7%. The UAE's diversified economy and large foreign currency reserves position it to withstand lower oil prices better than other Gulf countries, which face higher fiscal break-even points. The changing dynamics may accelerate oil diversification efforts across Gulf economies.

Latest article

AST SpaceMobile Stock’s May 11 Moment: FCC Win Meets BlueBird 7 Reality

AST SpaceMobile Stock’s May 11 Moment: FCC Win Meets BlueBird 7 Reality

29 April 2026
AST SpaceMobile will hold its first-quarter update call on May 11 after winning FCC approval to deploy a 248-satellite constellation for direct-to-device service. Shares fell 6.8% Tuesday, following the loss of its BlueBird 7 satellite in a failed launch. The company expects insurance to cover the loss and is targeting 45 satellites in orbit by end-2026. Investors are watching launch progress and commercial service timing.
OpenAI Target Miss Report Sends Oracle, CoreWeave and AI Stocks Lower

OpenAI Target Miss Report Sends Oracle, CoreWeave and AI Stocks Lower

29 April 2026
Oracle shares fell 4% and CoreWeave dropped 5.9% Tuesday after a Wall Street Journal report said OpenAI missed recent revenue and user targets. Nvidia, AMD, and Arm Holdings also declined, with the iShares Semiconductor ETF down 3.7%. OpenAI denied internal divisions and said its AI coding product Codex reached 4 million users. Oracle’s credit default swaps hit a two-week high amid concern over its $300 billion cloud deal with OpenAI.
Go toTop