AAOI shares have declined roughly 8.9% over the past 30 days, a relatively contained pullback compared with the stock's nearly 52% drop from its May 2026 peak of $233.67. The company is scheduled to report second-quarter 2026 results on August 6, with guidance pointing to revenue between $180 million and $198 million and non-GAAP EPS ranging from -$0.03 to $0.03.

Applied Optoelectronics (AAOI) shares declined approximately 29.6% over the past 30 days, sliding from $135.69 on June 26 to $95.47 as of July 27, 2026. The selloff was amplified by the stock's elevated beta of 3.69, making it one of the most volatile names in the AI optics and photonics sector.

Viavi Solutions (VIAV) shares have fallen approximately 21% over the last 30 days, dropping from $47.63 on June 26, 2026, to $37.52 as of July 27, amid a broad technology-sector rout and mounting macroeconomic headwinds. The sell-off accelerated following a Weiss Ratings downgrade to D+ (Sell) on July 16, compounded by the expiration of lockup agreements tied to the company's $500 million equity offering in May.

ADTN plunged -15.24% in pre-market and early regular trading Wednesday after the company issued preliminary Q2 2026 results that missed across all key metrics. Preliminary Q2 revenue came in at $280M–$282M, below the previously guided range of $283M–$303M and well under the $293.4M analyst consensus.

AST SpaceMobile shares fell approximately 13% over the last 30 days, dropping from $73.19 on June 22 to $63.34 by July 21, 2026. The sharpest single-day decline came on July 16, when the stock plunged 17% after the company announced a $1 billion convertible senior notes offering — its second such raise in 2026.

ASTS shares tumbled -9.76% on Thursday, extending an after-hours plunge of approximately -13% that began Wednesday evening after the company announced a $1 billion convertible senior notes offering due 2034. The primary catalyst is the convertible note raise, which spooked investors over potential future share dilution — this marks ASTS's second $1 billion convertible offering in recent months, reigniting concerns about its heavy cash burn and capital needs.

Zebra Technologies shares have risen approximately 8% over the past 30 days, reflecting post-earnings strength moderated by recent profit-taking. Q1 2026 results delivered a significant upside: non-GAAP EPS of $4.75 beat consensus estimates of $4.21, while revenue climbed 14.3% year-over-year to $1.50 billion.

Applied Optoelectronics (AAOI) shares dropped approximately 33.8% over the last 30 days, falling from $169.05 on June 12 to $111.88 on July 13, 2026. A wave of insider selling in mid-June, including transactions by the CEO and CFO, weighed heavily on investor sentiment.

Ericsson is scheduled to release its second quarter 2026 results on July 14, 2026. Analysts expect earnings per share around $0.13 for the quarter.

Lumentum Holdings (LITE) declined approximately 15.7% over the last 30 days, closing at $728.32 on July 2, 2026, amid a broad photonics sector selloff. The stock has corrected roughly 33% from its May 2026 all-time high above $1,085, driven by valuation compression, Russell index removal, and sector-wide repositioning.

CIEN shares closed at $478.93 on June 29, 2026, reflecting an approximate 17% decline from the May 29, 2026 closing price of $580.23 over the prior 30-day period. The stock has experienced notable volatility amid broader market dynamics in the optical networking sector.

AAOI shares plunged approximately 40.2% over the past 30 days, falling from $202.37 on June 2, 2026, to $120.94 on July 2, 2026. The sharp decline follows a period of extreme volatility and profit-taking after the stock surged more than 130% earlier in the quarter.

HPE shares have declined approximately 26.6% over the past 30 days, falling from $56.15 on June 2 to $41.20 on July 2, 2026. The pullback follows a massive post-earnings surge in early June, when the stock hit a multi-year high of $64.25 after reporting blockbuster fiscal Q2 2026 results.

Ericsson (ERIC) shares declined approximately 21.65% over the last 30 days, falling from $13.74 on June 2 to $10.765, erasing a strong May rally. The announcement of a CEO succession on June 16, with Per Narvinger set to replace long-time chief Börje Ekholm, introduced a period of leadership transition uncertainty.

Nokia shares have dropped approximately 28.7% over the last 30 days, falling from $16.85 on June 2 to $12.02, as a broad tech-sector rotation and profit-taking erased gains from a historic rally. The stock hit a multi-year high of $17.45 on June 3 before a sharp reversal took hold, with the decline accelerating in late June amid fading AI enthusiasm and valuation concerns.

HPE shares surged approximately 29% over the last 30 days, driven by a massive fiscal Q2 2026 earnings beat and surging AI-driven server demand. The company reported its largest earnings surprise since 2018, with EPS of $0.79 versus consensus estimates of $0.53, and revenue of $10.68 billion exceeding forecasts by over 9%.

Lumentum Holdings (LITE) declined approximately 12.6% over the last 30 days, falling from $946.90 on May 22 to $827.92 on June 23, 2026. The pullback follows an extraordinary rally that saw LITE surge over 130% year-to-date and hit an all-time high of $1,085.68 on May 12, 2026.

Ciena Corporation (CIEN) stock declined approximately 23% over the past 30 days amid broader market volatility in the communication equipment sector. Over the past quarter, the stock rose roughly 32%, reflecting strong earlier gains driven by AI-related networking demand.

Ciena Corporation (CIEN) stock declined approximately 23% over the past 30 days amid broader market volatility in the communication equipment sector. Over the past quarter, the stock rose roughly 32%, reflecting strong earlier gains driven by AI-related networking demand.

AST SpaceMobile shares fell approximately 14.60% to around $83.32 from the prior session close of $97.56. The decline was driven primarily by a broad selloff in space-related stocks tied to the SpaceX IPO.