LGVN plunged about -56% to roughly $2.94 from a prior close of $6.68, with the move hitting during the after-hours session following a trading halt. The primary catalyst: the Phase 2b ELPIS II trial of cell therapy laromestrocel in hypoplastic left heart syndrome missed its primary endpoint of change in right ventricular ejection fraction at Month 12 (p=0.8336).

SURG rallied +28.01% during the regular session to about $0.18, up from the prior close of $0.1439. Primary catalyst: SurgePays signed a non-binding letter of intent with LowWeeklyPayments to form a joint venture scaling its smartphone rent-to-own program past 100 existing dealers.

MNOV jumped +29.76% to $3.27 during regular trading, up from a $2.52 prior-session close. The primary catalyst was Roth/MKM initiating coverage with a Buy rating and a $6.00 price target, citing ibudilast's (MN-166) potential in ALS.

USDE surged +46.29% to about $9.07 during regular trading on Sept. 17, up from a $6.20 prior-session close. The rally followed a Form 8-K filing disclosing that Ethena Foundation agreed to permanently waive all lock-ups on StablecoinX's roughly 3 billion ENA tokens, effective Oct. 5, 2026.

AEHL is up +52.49% intraday, trading near $14.06 during regular Nasdaq session hours, extending Wednesday's +78.7% surge. Primary catalyst: confirmation of the closing of a $6.0 million (≈$5.97 million net) 8.00% convertible promissory note offering to fund Kylin Cloud's China livestreaming e-commerce expansion.

TURB jumped roughly +59.55% intraday to about $1.42, up from its $0.8935 prior-session close, on sharply elevated volume. The move unfolded during regular trading after premarket strength in this thinly traded microcap.

KXIN surged +93.81% to roughly $2.19, up from the prior session's $1.13 close, during Thursday's regular session. Primary catalyst: a 6-K filing disclosed first-half 2026 results showing total revenue jumped about +602% to $667,000, driven by Hong Kong car sales through its Jet Sound HK unit.

DAIC surged +136.32% during Thursday's regular session, climbing from a $2.01 prior close to roughly $4.75. Primary catalyst: a binding agreement to acquire electric-vehicle car-sharing platform Envoy Technologies for $65 million in equity at $6.00 per share.

DTSS surged roughly +221% intraday, climbing from a $0.5912 prior close to about $1.90 during Thursday's regular session. The jump occurred in market hours on explosive, well-above-average volume, not in premarket or after-hours trading.

MRNA is up +9.88% to roughly $160 during the regular session, versus a prior close of $145.62. Primary catalyst: positive Phase 3 results for the personalized mRNA cancer vaccine intismeran autogene, used with Merck's Keytruda, in high-risk melanoma — the first late-stage mRNA oncology success.

DSP is trading down roughly -15.93% to about $10.40 versus the prior session close of $12.37, extending pressure that began in Wednesday's after-hours session. The decline is being driven by a newly disclosed 8.5 million-share secondary offering of Class A stock by a selling stockholder, creating a near-term supply overhang.

TEM is up +10.36% during regular trading hours, trading near $77.22 versus a $69.97 prior close. Primary catalyst: Piper Sandler upgraded the stock to Overweight from Neutral and raised its price target to $76 from $56.

GNRC is up +21.92% to $213.50, extending an after-hours surge triggered by its newly disclosed Amazon data-center supply agreement. The long-term deal covers backup generators for Amazon data centers, with initial deliveries of roughly $2.4 billion across 2027–2028 and potential total payments near $8 billion.

MU is up +6.18% in regular trading to roughly $983.85, versus the prior close of $926.55. Primary catalyst: Micron began commercial production at its new $2.75 billion assembly and test facility in Gujarat, India, now shipping finished DRAM and NAND globally.

ALMU fell -11.69% to about $11.86, down from the prior session's $13.43 close. The decline is occurring during regular trading hours on Sept. 17, on elevated volume.

ON Semiconductor (onsemi) shares declined roughly 16% over the past 30 days, falling from about $79.42 on August 18 to $66.60 by the September 16 close. The selloff extends a deeper multi-month slide, with the stock down roughly 44% over the past quarter.

Lam Research (LRCX) shares fell roughly 21.7% over the last 30 days, slipping from about $343.84 in mid-August to $269.23. The slide extends a wider pullback: the stock is down approximately 28% over the last three months and about 38% below its late-June 52-week high near $438.50.

Western Digital (WDC) shares declined roughly 22% over the 30 days through mid-September 2026, falling from about $536 to approximately $417. The slide extends a broader correction, with the stock down more than 40% from its mid-June 2026 peak near $800 intraday.

Nebius Group (NBIS) shares fell roughly 22% over the trailing 30 days, from $268.85 on August 17 to $209.37 on September 16, giving back a large share of their post-earnings rally. The pullback reflects profit-taking after a surge of about 27%–34% on strong Q2 results, followed by renewed AI-safety concerns, higher Treasury yields, and a broader rotation out of AI infrastructure names.

10x Genomics (TXG) shares rose roughly 31% over the trailing 30 days, climbing from about $55.63 to a latest close of $72.68, and touched a new 52-week high. The rally built on a much larger multi-month surge, with the stock up more than 100% over the past quarter and over 300% year to date.