SOXL surged +78% over the past 30 days, driven by a powerful rally in the semiconductor sector fueled by AI chip demand. The ETF gained +49% over the past quarter, reflecting sustained strength in top holdings like NVIDIA and Broadcom amid robust earnings.

Defiance Quantum ETF (QTUM) surged +18% over the past 30 days, driven by strong performance in AI-related semiconductors and quantum computing enthusiasm. Over the past quarter, QTUM gained +10%, reflecting sustained interest in machine learning and quantum technologies amid broader tech sector strength.

FTXL surged +26% over the past 30 days, driven by robust demand for AI-related semiconductors and strong gains in top holdings like Broadcom and NVIDIA. The ETF gained +28% over the past quarter, reflecting sustained sector momentum amid AI infrastructure buildout and improving chip sales.

XSD surged +25% over the past 30 days, driven by robust demand for AI chips and strong earnings from key semiconductor players. The ETF climbed +17% over the past quarter, reflecting sustained sector momentum amid AI infrastructure buildout.

The iShares Semiconductor ETF (SOXX) surged +25% over the past 30 days, propelled by robust demand for AI chips and strong earnings from top holdings like NVIDIA ( NVDA ) and Broadcom ( AVGO ). Over the past quarter, SOXX gained +24%, reflecting sustained semiconductor sector strength amid broader technology market trends.

VanEck Semiconductor ETF (SMH) surged +20% over the past 30 days, propelled by robust demand for AI chips and strong performances from top holdings like NVIDIA and Taiwan Semiconductor. Over the past quarter, SMH gained +15%, reflecting a volatile path with a late-March dip followed by a sharp April rebound amid ongoing AI enthusiasm.

QXO shares fell approximately 8% on Monday, April 21, 2026, as markets reacted negatively to the company's announcement of a $17 billion acquisition of TopBuild Corp. (BLD), its second major deal in under 12 months. The acquisition, announced on April 19, 2026, values TopBuild at $505 per share — a 23% premium to its April 17 closing price — and will be partially financed through new equity issuance, raising investor concerns about significant dilution.

AXTI shares are falling approximately 10% on Monday, April 21, 2026, pulling from the April 17 closing price of $82.56 to around $74.30, extending a pattern of extreme volatility that has characterized the stock throughout April. No single major new fundamental catalyst has emerged today; the decline reflects a continued valuation reset following a staggering multi-month rally driven by AI-related indium phosphide demand expectations.

CLF shares declined approximately 8% on Monday, April 21, 2026, despite reporting Q1 2026 results that beat both earnings and revenue consensus estimates. The selloff was driven by a deeply disappointing Adjusted EBITDA of just $95 million for the quarter — far below investor expectations — after an $80 million one-time energy cost hit caused by extreme cold weather events.

AGIO shares fell approximately 20% in Monday's trading session, from a prior close of $35.14 on April 17, 2026, to approximately $28.11, representing one of the stock's largest single-session declines in months. The selloff coincides with the April 20, 2026, lead plaintiff deadline in a securities class-action lawsuit filed against the company, alleging potential violations of securities laws tied to disclosures surrounding Pyrukynd's clinical and regulatory development.

FRMI shares fell approximately 17% in premarket trading on Monday, April 21, 2026, extending a post-market plunge triggered by the sudden departure of co-founder and CEO Toby Neugebauer, effective April 17, 2026. The primary catalyst is a sweeping leadership overhaul branded "Fermi 2.0": Neugebauer's exit was accompanied by the simultaneous resignation of CFO Miles Everson and the appointment of Lead Independent Director Marius Haas as the new Chairman of the Board.

ASTS shares fell approximately 12% in premarket trading on Monday, April 21, 2026, after the company confirmed the loss of its BlueBird 7 satellite following an April 19 launch anomaly. The primary catalyst was a failed orbital insertion: BlueBird 7 was deployed into a lower-than-planned orbit by Blue Origin's New Glenn rocket, rendering the satellite inoperable and forcing a de-orbit decision.

WDC stock surged +26% over the last 30 days, driven by analyst price target upgrades and anticipation for Q3 earnings amid strong AI storage demand. Over the past quarter, shares climbed +68%, fueled by robust Q2 earnings beat and multi-year AI infrastructure commitments.

Sandisk Corporation (SNDK) stock surged approximately +30% over the past 30 days, driven by strong NAND flash demand from AI data centers and rising memory prices. Over the past quarter, shares climbed +84%, reflecting a broader NAND market recovery and AI-fueled growth momentum.

OPTX stock rose approximately +38% over the past 30 days, driven by new contract wins in space and defense optics. Over the past quarter, shares surged +119%, fueled by revenue growth in defense, medical, and communications sectors amid broader market interest in photonics for AI and space applications.

AXT, Inc. (AXTI) stock surged +52% over the last 30 days, driven by strong investor enthusiasm for AI-related demand in indium phosphide (InP) substrates used in data centers and high-speed optics.

AAOI stock price rocketed +82% over the past 30 days, driven by surging demand for high-speed optical transceivers in AI data centers. Over the past quarter, shares soared +315%, propelled by a stellar Q4 2025 earnings beat and major hyperscaler orders.

YSS stock surged approximately +70% over the last 30 days, driven by positive NASA-related developments and heightened investor appetite for space stocks. Over the past quarter, shares experienced high volatility, dipping to a 52-week low before recovering, resulting in a net decline of around -6% from IPO levels.

FLY stock surged +88% over the last 30 days, driven primarily by strong Q4 earnings beat and robust 2026 revenue guidance. Over the past quarter, shares climbed +44%, reflecting accelerating momentum in the space sector and positive analyst sentiment.

EchoStar Corporation (SATS) stock has risen +21% over the past 30 days, driven by momentum in space stocks and investor interest in the company's indirect SpaceX exposure through founder Charlie Ergen's holdings. Over the past quarter, shares are up +9%, supported by a Q4 earnings beat and strategic spectrum asset sales that bolstered the balance sheet.