Qualcomm shares declined approximately 16.8% over the past 30 days, falling from $233.40 on May 27 to $194.16 at the June 26 close, erasing a significant portion of gains from the stock's late-May rally. The stock hit an all-time high of $259.92 on May 29 following a transformative investor day, but a sharp June selloff driven by broader semiconductor weakness and profit-taking reversed the momentum.

ON Semiconductor shares plunged -21.19% to $93.58 during Friday's regular session, extending a steep premarket selloff that began after Thursday's close. The primary catalyst was the announcement of a $7 billion all-stock acquisition of Synaptics (SYNA), with investors reacting negatively to significant shareholder dilution and the deal's strategic fit.

ON shares are falling approximately 12% in premarket trading on Friday, June 26, 2026, from a prior close of $118.74 to around $104.36. The primary catalyst is onsemi's announcement of a definitive agreement to acquire Synaptics (SYNA) in an all-stock deal valued at approximately $7 billion — the company's largest acquisition in its history.

MU shares are declining approximately 6% in premarket trading on Friday, June 27, 2026, reversing a portion of the prior session's 14.5%+ earnings-driven rally. The primary catalyst is a broad, global technology and semiconductor selloff, with investors booking profits following the stock's massive post-earnings surge.

Entire 2026 high-bandwidth memory (HBM) supply is sold out under fixed-price contracts, providing revenue visibility amid surging artificial intelligence (AI) demand. Upcoming fiscal Q3 2026 earnings release expected to offer updated guidance on Q4 revenue, gross margins, and HBM4 ramp progress for NVIDIA’s Vera Rubin platform.

Revenue reached a record $41.46 billion, more than quadrupling from $9.30 billion in the year-ago quarter and rising sharply from $23.86 billion in the prior quarter. Non-GAAP diluted EPS of $25.11 significantly exceeded analyst expectations of approximately $20.20.

CBRS shares are down approximately 11% in premarket trading on Wednesday, June 24, 2026, following an after-hours selloff triggered by the company's first earnings report as a public company. Cerebras beat Q1 revenue expectations with $193.4 million — a 92% year-over-year surge — but missed on earnings per share and issued a gross margin forecast that unsettled investors.

AMD closed at $519.85, down -5.76% from the prior session's $551.63, swept up in a broad semiconductor rout during regular trading hours. The selloff was triggered by South Korea's KOSPI index plunging 10% and SK Hynix slowing its HBM4 memory expansion, sparking fears of cooling AI infrastructure demand.

Micron Technology is set to report fiscal third-quarter 2026 results after market close on June 24, 2026. Analysts expect strong year-over-year growth driven by demand for high-bandwidth memory in data centers and AI applications.

Tower Semiconductor (TSEM) shares are falling approximately 11% in Tuesday's premarket session, pulling back from Monday's closing price of $316.85 to approximately $282.00. The primary catalyst is a sweeping global semiconductor sector rout: the iShares Semiconductor ETF is down approximately 5.9% in premarket, dragging the entire chip complex sharply lower.

Advanced Micro Devices (AMD) shares are falling approximately 5.28% in Tuesday's premarket session, pulling back from Monday's closing price of $551.63 to around $522.50. The primary catalyst is profit-taking and valuation reset following a year-to-date advance of more than 143%, leaving shares exposed to sharp reversals on any erosion of sentiment.

Micron Technology (MU) shares are falling approximately 8.46% in Tuesday's premarket session, retreating from Monday's all-time closing high of $1,211.38. The primary catalyst is pre-earnings valuation reset: investors are locking in gains ahead of Micron's highly anticipated fiscal Q3 2026 earnings report, scheduled for after the close on June 24, 2026.

TSM surged approximately +17.70% over the last 30 days, closing at $462.12 on June 18, 2026, driven by relentless AI chip demand and capacity constraints. Over the last quarter, the stock gained roughly +36%, reflecting sustained momentum from hyperscaler AI infrastructure spending and strong earnings results.

Micron Technology (MU) surged approximately 52.8% over the last 30 days, climbing from $681.54 on May 18 to $1,041.41 on June 17, 2026. The rally was fueled by a wave of analyst price target increases — several firms more than doubled their targets — and confirmation that Micron's entire 2026 HBM4 capacity is sold out under long-term contracts.

ARM stock rose approximately +92% over the past 30 days, driven primarily by heightened AI demand and positive analyst sentiment. Over the past quarter, the stock gained more than +220%, reflecting sustained momentum from semiconductor sector tailwinds and company-specific growth signals.

MU rose +1.57% to $1,151.80 during regular trading hours on June 19, 2026, building on the prior session's +8.70% close. Shares gained amid continued momentum from multiple analyst price target increases, including Wedbush raising to $1,300 and Stifel to $1,500.

AVGO shares declined approximately 6.6% over the last 30 days, closing at $392.91 on June 17, 2026, as post-earnings selling pressure offset robust AI demand signals. Q2 FY2026 results delivered record revenue of $22.19 billion (up 48% year-over-year) and AI semiconductor revenue of $10.8 billion (up 143% YoY), yet the stock sold off sharply when full-year AI guidance was reiterated rather than raised.

ARM stock rose approximately +92% over the past 30 days, driven primarily by heightened AI demand and positive analyst sentiment. Over the past quarter, the stock gained more than +220%, reflecting sustained momentum from semiconductor sector tailwinds and company-specific growth signals.

AMD stock rose approximately +26% over the past 30 days, driven by strong AI chip demand and positive sector momentum. Over the past quarter, the stock advanced roughly +165%, reflecting sustained investor enthusiasm for semiconductor growth.

HIMX shares fell approximately 10% in today’s session amid a broad semiconductor sector selloff. The primary catalyst was negative sentiment from Broadcom (AVGO) earnings overhang and a stronger-than-expected U.