ASYS shares declined approximately 14.2% over the past 30 days, falling from $21.91 on June 4 to $18.81 by July 2, 2026. A $60 million oversubscribed public offering priced at $20.50 per share in early June introduced significant dilution concerns, with the share count expanding by roughly 29%.

QuickLogic shares fell approximately 26.5% over the past 30 days, dropping from $21.80 on June 2 to $16.02 by July 2, 2026. A broad semiconductor sector selloff in late June, triggered by South Korean memory contagion and AI infrastructure spending concerns, accelerated the decline.

Kulicke and Soffa Industries, Inc. ( KLIC ) and Power Integrations, Inc.

Kulicke and Soffa Industries (KLIC) shares surged approximately 13.0% over the past 30 days, climbing from $107.52 on June 4 to $121.46 as of July 2, 2026. The rally was fueled by sustained investor enthusiasm around AI-driven advanced packaging demand, particularly for the company's Fluxless Thermo-Compression Bonding (TCB) systems.

Both DIOD and KLIC are semiconductor companies that have delivered substantial year-to-date gains, significantly outperforming broader market benchmarks in recent market activity. DIOD focuses on discrete, analog, and logic semiconductors with exposure to automotive and industrial end markets, while KLIC provides semiconductor assembly equipment and advanced packaging solutions.

DIOD shares fell approximately 14.5% over the past 30 days, retreating from a closing price of $112.50 on June 4 to $96.17 as of July 2. The decline follows a sharp rally that pushed the stock to a multi-month high of $123.50 on June 18, suggesting profit-taking and a technical correction.

Rambus shares fell approximately 33% over the past 30 days, erasing a significant portion of earlier 2026 gains. The decline accelerated in late June, with the stock dropping from around $170 to below $115 amid heavy selling volume.

Both ACMR and AMAT operate in the wafer fabrication equipment (WFE) segment of the semiconductor industry, supplying tools essential for chip manufacturing. Recent market activity shows notable volatility, with both stocks experiencing significant price declines in early July 2026 amid broader sector movements.

ACM Research shares have pulled back from all-time highs above $127 in late June to approximately $98, reflecting profit-taking after a sharp rally and broader semiconductor sector volatility. First-quarter 2026 revenue surged 34.2% year-over-year to $231.3 million, with total shipments up 53.6%, highlighting robust demand for the company's wafer processing and advanced packaging equipment.

VRTX surged 24.2% over the past 30 days, driven by renewed investor confidence in its pipeline. The stock's quarterly gain of approximately 9.9% reflects a steady uptrend that accelerated in late June.

Arm Holdings shares declined approximately 23% over the past 30 days, falling from $411.83 on June 3 to $315.50, as a broad AI-sector rotation triggered heavy profit-taking in high-multiple semiconductor names. The selloff was driven primarily by valuation concerns and sector-wide de-risking rather than company-specific fundamental deterioration, with a Korean-led chip rout accelerating the pullback in late June.

TotalEnergies shares fell approximately 14.2% over the last 30 days, driven primarily by a sharp decline in crude oil prices following the US-Iran peace deal and the reopening of the Strait of Hormuz. Brent crude dropped from elevated levels above $110 per barrel in May to the low $70s by early July, removing a substantial geopolitical risk premium that had supported energy stocks.

Novo Nordisk (NVO) shares surged approximately 20% over the last 30 days, climbing from $42.00 to $50.43. The broader quarterly performance was even stronger, with the stock gaining roughly 38% since early April.

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.

Alcoa shares plunged approximately 39.8% over the past 30 days, falling from $80.86 on June 3 to $48.68 on July 2, 2026. A sharply negative Q2 operating update on June 10, in which management flagged a roughly $60 million unfavorable hit to Alumina segment adjusted EBITDA, triggered the initial selloff.

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.

IREN shares plunged approximately 41.7% over the past 30 days, falling from $66.60 on June 2 to $38.83 as of July 2, 2026, erasing billions in market capitalization. A sharp decline in Bitcoin below $60,000, combined with broader AI spending concerns that hit the Nasdaq and semiconductor stocks, triggered heavy selling across crypto-linked and AI infrastructure names.

CRCL shares fell approximately 28% over the past 30 days, driven by a sharp selloff following the announcement of a new competing stablecoin network. The launch of Open USD (OUSD), backed by Visa and other major financial institutions, intensified competitive fears and triggered a single-day decline of over 17% on June 30.

IonQ shares fell approximately 31.2% over the past 30 days, dropping from $71.40 on June 2 to $49.12 on July 2, as a sharp reversal from the stock's multi-month rally took hold. Insider selling by multiple directors and executives during June amplified valuation concerns, with the stock trading at roughly 97 times trailing sales despite heavy operating losses.

Lindsay Corporation reported Q3 fiscal 2026 revenue of $160.8 million, down 5% year-over-year. Diluted EPS came in at $1.53, beating analyst consensus estimates.