✓After hours - Last update: Jul 13, 2026, 9:32 AM ET
📊Valuation✓High confidence
Intraday updates3 updates
3:30 PM ETLATESTValuation✓ High confidence
1:30 PM ETRisk✓ High confidence
10:00 AM ETValuation✓ High confidence
Market closed · After hours · 6:12 PM ET
Last update: Jul 13, 2026, 4:53 PM ETMarket closed·100 changes confirmed today
Track the stock moves that actually matter.
BestStocks detects meaningful changes across price, volume, earnings, filings, valuation, analyst revisions, and risk signals — and shows you the evidence behind each one.
1,000 equities monitored14 signal typesCross-checked against SEC EDGARMedian detection lag ~41s
Investment research built around change detection.
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BestStocks identifies what changed across companies and sectors, explains why it matters, and helps investors spot opportunities worth investigating.
✓After hours - Last update: Jul 13, 2026, 2:32 PM ET
📊Valuation✓High confidence
What changed: Applied Digital fell 8.41% to $28.53, extending a steep one-month decline amid concerns over heavy AI data center expansion, customer concentration risk, and premium valuation, per Zacks analysis published today. Volume ran at 0.71x expected levels for this point in the session, suggesting below-average participation.
Detected Jul 13, 2:32 PM ET
Changes History →What's next
What to watch
Earnings call or forward guidance revision that addresses customer diversification and data center capacity utilization rates.
✓After hours - Last update: Jul 13, 2026, 11:32 AM ET
📊Valuation✓High confidence
What changed: SpaceX shares fell 4.56% to $138.68 as the broader space sector retreated on China's rocket milestone and an oil price spike, per 247wallst.com. The stock is now trading below its $150 June 12 IPO debut price and approaching its $135 IPO offer price. Volume was running at 0.66x the expected ratio for this time of session, suggesting below-average participation.
Detected Jul 13, 3:30 PM ET
Changes History →What's next
What to watch
Monitor SpaceX's hold above the $135 IPO price and watch for any sector recovery if oil prices stabilize or if company-specific catalysts (operational updates, contracts) emerge.
✓After hours - Last update: Jul 13, 2026, 10:02 AM ET
📊Valuation✓High confidence
Intraday updates2 updates
3:30 PM ETLATESTValuation✓ High confidence
AI-related jitters sparked a broad semiconductor sell-off Monday, with SK Hynix leading declines in Korea and memory-chip stocks sliding globally (Morningstar). Intel fell 6.78% to $102.39, tracking the sector weakness alongside peers like Micron and SanDisk. Volume of 62.1M shares ran 34% below the time-of-day average, suggesting limited conviction in the sell-off.
2:00 PM ETValuation✓ High confidence
Intel fell 4.22% to $105.21 amid a sector-wide pullback in AI stocks as investors question the sustainability of Big Tech's aggressive spending plans, per Barron's. The decline occurred despite Intel announcing a €5 billion ($5.7 billion) capital investment at its Irish manufacturing hub to expand European output for AI and high-performance computing.
What's next
What to watch
Earnings reports and forward guidance from memory-chip suppliers (Micron, SK Hynix, Samsung) and foundries; any data on AI capex trends or demand revisions from cloud providers.
✓After hours - Last update: Jul 13, 2026, 3:30 PM ET
📊Valuation
What changed: Karman Holdings fell 8.34% to $45.84, reversing recent strength in defense and space stocks. The decline occurred on below-average volume (0.25x expected at this point in the session), suggesting limited conviction behind the move rather than broad-based selling pressure.
Detected Jul 13, 3:30 PM ET
Changes History →What's next
What to watch
Monitor whether volume picks up in the final hours of trading and watch for any company announcements or defense-sector news that might clarify the reversal; also track KRMN's ability to hold above the $45 level through close.
✓After hours - Last update: Jul 13, 2026, 2:32 PM ET
📊Valuation✓High confidence
What changed: Vertiv shares fell 5.09% to $302.62 after comparative value analyses published by Zacks positioned rival data center infrastructure plays—ExlService (EXLS) and nVent Electric (NVT)—as more attractive on valuation and operational metrics. Volume ran 0.44x expected at this point in the session, indicating below-average participation in the decline.
Detected Jul 13, 2:30 PM ET
Changes History →What's next
What to watch
Monitor for any Vertiv earnings announcement, guidance update, or management commentary addressing valuation and competitive positioning versus nVent and other data center equipment suppliers.
✓After hours - Last update: Jul 13, 2026, 3:30 PM ET
📊Valuation
What changed: Ultra Clean Holdings fell 9.28% to $96.41 after insider Brian E. Harding sold 3,837 shares (approximately $494,000) on July 2, reducing his direct holdings by 10%, according to Motley Fool's filing coverage. The decline occurred on below-average volume of 696,285 shares (0.69x expected), suggesting limited conviction in either direction.
Detected Jul 13, 3:30 PM ET
Changes History →What's next
What to watch
Upcoming earnings call or guidance revision; monitor for additional insider transactions or analyst commentary on Ultra Clean's forward demand and margin outlook.
✓After hours - Last update: Jul 13, 2026, 1:02 PM ET
📊Valuation✓High confidence
What changed: ACM Research shares fell 8.22% to $94.53 intraday with no major catalyst reported; trading volume remains below historical averages at 0.30x expected for this point in the session. Zacks noted the stock has drawn recent retail attention, but no concrete earnings, guidance, product, or analyst action appears in available evidence to explain the decline.
Detected Jul 13, 3:00 PM ET
Changes History →What's next
What to watch
Watch for any after-hours news, earnings/guidance changes, or analyst downgrades; monitor if volume picks up into the close to confirm whether selling pressure sustains.
✓After hours - Last update: Jul 13, 2026, 9:32 AM ET
📊Valuation✓High confidence
What changed: Western Digital fell 5.16% to $552.54 as memory-chip stocks tumbled broadly on escalating US-Iran tensions that triggered risk-off sentiment across equities (Reuters, July 13, 2026). Peers including Micron Technology and Seagate fell 4.8–6.6% in the same session, with no company-specific catalyst cited for WDC.
Detected Jul 13, 3:30 PM ET
Changes History →What's next
What to watch
Resolution or escalation of US-Iran tensions; any earnings guidance or AI infrastructure spending commentary from WDC or major customers (e.g., cloud platforms) in coming days.
✓After hours - Last update: Jul 13, 2026, 10:02 AM ET
🛡Risk✓High confidence
Intraday updates2 updates
3:30 PM ETLATESTRisk✓ High confidence
Astera Labs shares fell 14.06% to $354.92, dropping $58.05 from the prior close of $412.97. The decline follows an insider sale disclosure (Motley Fool, July 12, 2026) in which a company insider sold 8,491 shares at $458 on July 1, 2026, via Casa Alameda 2007, LLC—a transaction valued at $3.9 million. Volume through 180 minutes is tracking at 0.87x historical average, suggesting measured selling pressure rather than panic liquidation.
12:00 PM ETRisk✓ High confidence
Astera Labs fell 7.82% to $380.68 in early trading following an insider sale of 8,491 shares at a $458 weighted average price on July 1 (disclosed July 12), according to Motley Fool's filing coverage. The sale, executed indirectly through Casa Alameda 2007, LLC, totaled approximately $3.9 million.
What's next
What to watch
Monitor whether the stock stabilizes into close and watch for any additional insider transaction filings or company guidance updates that might contextualize the sale.
✓After hours - Last update: Jul 13, 2026, 4:39 PM ET
🛡Risk~Medium confidence
What changed: AppLovin Corporation (APP) moved -12.65% from $506.98 to $442.85 on 2026-07-13. We checked news, earnings, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. The move occurred on elevated volume (2.2x the 5-day average) and pushed the stock to a new 30-day low.
Source: daily_prices
Changes History →What's next
What to watch
Monitor for any delayed news disclosures or earnings announcements that may explain the move, and track whether volume normalizes or sustains at elevated levels.
✓After hours - Last update: Jul 13, 2026, 2:32 PM ET
⚡Activity✓High confidence
What changed: WTI crude oil futures surged 3.96% on July 13, 2026, driven by U.S. strikes on Iran and renewed fears of Strait of Hormuz supply disruptions, according to web search results. USO rallied 9.39% to $118.91—a larger move than the underlying commodity, consistent with the fund's leverage via short-term futures contracts. Volume reached 9.32M shares, running 2.15x the historical average for this time of day.
Detected Jul 13, 3:30 PM ET
Changes History →What's next
What to watch
Monitor further developments in U.S.-Iran tensions and any updates to OPEC+ production policy; track WTI futures settlement and any shifts in Strait of Hormuz risk premium through the close.