Market closed · After hours · 4:12 PM ET
Last update: Aug 4, 2026, 3:33 PM ET
Market closed·35 changes confirmed today

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1,000 equities monitored14 signal typesCross-checked against SEC EDGARMedian detection lag ~41s

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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: Aug 4, 2026, 3:30 PM ET
PLTR
Palantir Technologies Inc.
$162.49
29.32%
Prev close $125.65
Aug 4, 2026 ET

What changed: Palantir Technologies stock surged +26.05% following a strong Q2 2026 earnings beat and raised full-year guidance. The company reported adjusted EPS of $0.41 (beating $0.35 consensus) and revenue of $1.94 billion (vs. $1.80–$1.81 billion expected), with U.S. commercial revenue jumping 149% year-over-year to $764 million on enterprise adoption of its AI Platform (AIP). Management raised FY 2026 revenue guidance to $8.15–$8.16 billion from prior consensus of $7.65–$7.70 billion (finance.yahoo.com). Volume reached 61.75 million shares in the first 65 minutes, 10.5x the time-adjusted average — substantially elevated.

Detected Aug 4, 3:30 PM ET

Source: Yahoo Finance

Changes History →
What's next

Analyst price-target revisions and any updates on AIP adoption rates or major new enterprise customer wins; also monitor for any guidance commentary on government contract pipeline changes given the strong Pentagon Maven Smart System contribution.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
MRVL
Marvell Technology, Inc.
$219.03
13.03%
Prev close $193.78
Aug 4, 2026 ET
📊Valuation ×2
Intraday updates2 updates
3:30 PM ETLATESTValuation High confidence

Marvell Technology surged +14.59% to $222.06 on announcements of enhancements across its AI memory infrastructure portfolio and broader semiconductor sector strength, per CNBC. The rally reflects positive investor sentiment toward the company's agentic AI inference capabilities and a $250 million R&D expansion in India, set against a semiconductor sector rebound driven by hyperscaler capital spending confidence. Volume reached 20.7 million shares, 1.37x the time-adjusted historical average.

Source: CNBC

12:00 PM ETValuation High confidence

Marvell Technology surged +10.21% to $213.56, driven by a sector-wide semiconductor rebound fueled by strong AI spending forecasts alongside Marvell's announcement of a $250 million investment in India to expand AI and semiconductor R&D in Bangalore and Hyderabad (finance.yahoo.com, investing.com). Volume hit 12.6M shares, 3.07x the time-adjusted average, underscoring broad institutional participation in the sector recovery.

Source: Yahoo Finance

Changes History →
What's next

Marvell earnings release and guidance on August 27, 2026 (consensus EPS estimate $0.93); also monitor for any updates on the India R&D expansion project execution.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
SNDK
Sandisk Corporation
$1,421.01
10.32%
Prev close $1,288.03
Aug 4, 2026 ET
📊Valuation ×2
Intraday updates2 updates
3:30 PM ETLATESTValuation High confidence

SanDisk shares surged 10.59% to $1424.46 ahead of fiscal Q4 earnings scheduled for August 5, 2026, driven by pre-earnings positioning and a broader tech sector recovery (per web catalyst and Yahoo Finance). The rally follows a recent 40–50% pullback from highs, with Wall Street projecting non-GAAP EPS of $30–$33 fueled by AI data center storage demand. Volume of 8.7M shares (1.17x normal) reflects elevated positioning activity.

Source: Yahoo Finance

12:00 PM ETValuation High confidence

SanDisk rallied 7.44% to $1383.91 on converging positive catalysts ahead of Q4 earnings. A Seeking Alpha analyst upgraded the stock to bullish on improved NBM business visibility and multi-year contract momentum, while the company co-unveiled a new 3D Flash Memory technology with Kioxia achieving industry-leading QLC NAND bit density—all announced August 4, the day before scheduled Q4 earnings.

Source: Seeking Alpha

Changes History →
What's next

SanDisk fiscal Q4 earnings report and guidance on August 5, 2026; pay attention to AI data center storage revenue contribution and forward demand signals.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
INTC
Intel Corp.
$100.76
10.73%
Prev close $91.00
Aug 4, 2026 ET
📊Valuation ×2
Intraday updates2 updates
3:30 PM ETLATESTValuation High confidence

Intel shares jumped 9.52% to $99.66 on August 4, 2026, cited by finance.yahoo.com and MarketWatch as sources for the intraday move. Volume reached 35.3 million shares (1.98x normal for this time of day), well above typical levels. The specific driver remains unclear from available headlines.

Source: Yahoo Finance

10:00 AM ETValuation High confidence

Intel rose 6.78% to $97.17 as part of a broader semiconductor and AI sector rebound on August 4, 2026. According to the web catalyst, the move was driven by easing geopolitical tensions that lowered crude oil prices, recovery in AI stocks following a volatile July, and continued investor confidence in Intel's data center revenue and domestic foundry execution plans. The stock had traded near $91 earlier in the session before the broader market rally took hold.

Source: Yahoo Finance

Changes History →
What's next

Intel earnings on October 22, 2026 (consensus EPS $0.39); any news releases or analyst commentary clarifying today's catalyst.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
DDOG
Datadog, Inc.
$288.35
5.39%
Prev close $273.60
Aug 4, 2026 ET
📊Valuation

What changed: Datadog rose 5.27% to $288.02 following bullish analyst upgrades and strong momentum in AI-driven observability demand. Cantor Fitzgerald raised its price target to $327 from $226, and Canaccord Genuity lifted its target to $295 from $250, per Yahoo Finance. Investors are also positioning ahead of the company's Q2 earnings report scheduled for August 6, 2026.

Detected Aug 4, 3:30 PM ET

Source: Yahoo Finance

Changes History →
What's next

Datadog Q2 2026 earnings release on August 6, 2026; watch for revenue growth, AI product adoption metrics, and management guidance on AI-driven observability demand to confirm the upgrade thesis.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
SCCO
Southern Copper Corporation
$195.75
5.29%
Prev close $185.91
Aug 4, 2026 ET
📊Valuation

What changed: Southern Copper (SCCO) gained 5.03% to $195.26, driven by strong Q2 earnings that beat EPS estimates at $2.01 (per Yahoo Finance), combined with rising global copper prices and tightening physical supply supporting major mining peers. An upcoming 1.012-for-1 stock split on August 11 has also generated investor interest. Volume of 593,333 shares through 270 minutes is running at 0.76x the historical average—normal for this time of session.

Detected Aug 4, 3:30 PM ET

Source: Yahoo Finance

Changes History →
What's next

Earnings confirmation for Q2 and monitoring for the August 11 stock split execution; next earnings are scheduled for October 27, 2026, with a consensus EPS estimate of $1.81.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
APH
Amphenol Corporation
$172.44
5.57%
Prev close $163.34
Aug 4, 2026 ET
📊Valuation

What changed: Amphenol surged 3.20% to $168.56 on continued momentum from blowout Q2 earnings and raised guidance. The company posted 55% year-over-year revenue growth to $8.76 billion with an EPS beat, and management raised Q3 projections on robust organic growth and CommScope CCS acquisition contributions (finance.yahoo.com). Simultaneously, major analysts including Citigroup and Barclays raised price targets to $195 and $200 respectively, citing Amphenol's positioning in AI data center and fiber connectivity infrastructure. Volume of 2.71M shares ran 1.27x the time-adjusted average, consistent with normal intraday trading patterns.

Detected Aug 4, 3:30 PM ET

Source: Yahoo Finance

Changes History →
What's next

Amphenol earnings scheduled for 2026-10-28 (consensus EPS estimate $1.41); monitor for any updates on CommScope CCS integration and Q3 demand trends ahead of the report.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
ADI
Analog Devices, Inc.
$380.65
5.19%
Prev close $361.88
Aug 4, 2026 ET
📊Valuation

What changed: Analog Devices rose 5.19% to $380.65 as part of a broader technology and semiconductor sector rally, with the Nasdaq and S&P 500 trading higher and investors positioning ahead of the company's August 19 fiscal Q3 earnings report. Volume was 2.09M shares, below the 0.58x time-adjusted average, suggesting the move was driven by sector momentum rather than company-specific news.

Detected Aug 4, 3:30 PM ET

Source: ca.finance.yahoo.com

Changes History →
What's next

ADI earnings report and guidance on August 19, 2026; monitor for any updates on data center demand, automotive/industrial end-markets, or management commentary on AI-driven infrastructure trends.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
GLW
Corning Inc
$160.13
9.20%
Prev close $146.64
Aug 4, 2026 ET
📊Valuation ×2
Intraday updates2 updates
3:30 PM ETLATESTValuation High confidence

Corning surged +9.98% to $161.27 on a combination of geopolitical tailwind and a Wall Street upgrade. Reports that the Trump administration is drafting an FCC ban on U.S. imports of Chinese optical transceivers lifted domestic optical component providers, while Truist Securities upgraded GLW to Buy from Hold following July's pullback, according to sources cited by Google's AI Overview (investing.com, Yahoo Finance). Volume at 11.3M shares ran 1.34x normal for this stage of the session.

Source: Yahoo Finance

12:00 PM ETValuation High confidence

Corning surged 5.84% to $155.20 on August 4, 2026, driven by a proposed U.S. FCC ban on Chinese data center optical transceivers—a geopolitical tailwind for domestic optical component makers—combined with a relief rally as investors aggressively bought back shares following a late-July correction (per Benzinga and Yahoo Finance). Volume ran 1.54x normal at this time of day, consistent with the spike in buying interest.

Source: ca.investing.com

Changes History →
What's next

Corning earnings scheduled for 2026-10-27 (consensus EPS $0.84); any FCC action confirmation or additional analyst coverage on the optical transceiver restrictions.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
KLAC
KLA Corporation
$195.23
6.83%
Prev close $182.75
Aug 4, 2026 ET
📊Valuation

What changed: KLA Corporation rebounded +5.17% to $192.20 intraday, recovering from a 40% slide over the prior 30 days. Wall Street consensus price target stands at $230.85 versus the prior close of $182.75, implying 26% upside (247wallst.com). Volume at 2.6M shares is tracking 0.89x average for the session elapsed, within normal parameters.

Detected Aug 4, 3:30 PM ET

Source: 247wallst.com

Changes History →
What's next

KLAC earnings release on 28 October 2026 and any pre-earnings revisions to consensus estimates or price targets.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
LRCX
Lam Research Corporation
$315.89
7.22%
Prev close $294.61
Aug 4, 2026 ET
📊Valuation

What changed: Lam Research surged 5.07% to $309.54, extending gains driven by stellar recent earnings and robust AI chip demand. According to the web catalyst summary, continued market enthusiasm for the company's blowout quarterly results and upbeat forward guidance tied to booming AI semiconductor equipment build-outs fueled early strength, with strong analyst sentiment and high buy conviction supporting the move.

Detected Aug 4, 3:30 PM ET

Source: Yahoo Finance

Changes History →
What's next

LRCX earnings report scheduled for 2026-10-21 (date not yet confirmed); consensus EPS estimate $2.16. Monitor for any guidance updates on AI-related equipment demand and capital spending trends from major chip customers.

After hours - Last update: Aug 4, 2026, 3:30 PM ET
MU
Micron Technology, Inc.
$893.51
7.72%
Prev close $829.50
Aug 4, 2026 ET
📊Valuation ×2
Intraday updates2 updates
3:30 PM ETLATESTValuation High confidence

Micron rallied +6.94% to $886.67 following major Wall Street price target upgrades from Needham (to $1,550) and Bernstein SocGen (to $1,300), citing stronger structural memory pricing and robust High-Bandwidth Memory (HBM) demand extending through 2027. The move reflects broader positive momentum across memory suppliers including Samsung and SK Hynix, signaling an industry-wide repricing. Volume of 15.0M shares ran 1.37x the time-adjusted average, consistent with normal intraday patterns.

Source: Yahoo Finance

10:35 AM ETValuation High confidence

Micron Technology rallied +4.38% to $865.39 after a period of weakness in July. Recent reporting from Barron's (2026-08-04) highlights growing memory-chip market share gains, while The Motley Fool (2026-08-03) notes that despite July sentiment headwinds in the memory sector, Micron's latest earnings demonstrate blockbuster growth. The rebound follows acknowledgment that the stock had cooled after a multi-quarter AI-driven run.

Source: 247wallst.com

Changes History →
What's next

MU earnings scheduled for September 22, 2026 (consensus EPS estimate $31.16); monitor for guidance on HBM capacity and 2027 demand.

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In-depth equity research from the BestStocks desk — earnings breakdowns, valuation deep dives, and sector analysis behind the changes we detect.

High-voltage transmission infrastructure beside a natural gas turbine installation on the Texas plains at dusk, illustrating the Fermi Inc. share-price decline of July 31, 2026 at its pre-revenue AI power campus
Stock AnalysisAugust 2, 2026 · 11 min read

Why Fermi (FRMI) Stock Fell 15% on July 31, 2026 — a De-Rating With No Headline

Fermi closed July 31 down 15.45% at $5.69, erasing the previous session's 14.85% gain — with no company announcement identified. The conditions around it were structural: sell-side targets cut roughly 60% in five weeks, 12.1 million new shares listed in London two days earlier, and a short base up a quarter in a month against a float of 288 million shares.

DRAM memory modules and high-bandwidth memory stacks on a semiconductor wafer, illustrating the Micron selloff of July 31, 2026 driven by concern over the timing of peak memory margins
Stock AnalysisAugust 1, 2026 · 11 min read

Why Micron (MU) Stock Fell 5.9% on July 31, 2026 — and Why Bullish Memory News Made It Worse

Micron opened higher and rose 6.4% intraday on July 31, 2026 after Amazon raised 2026 capex to $220 billion citing memory costs and Apple flagged a shortage — then closed down 5.90% at $823.03, near its low. The tape shows why: the S&P 500 and Nasdaq rose, the semiconductor index was flat, and hard-disk peers Western Digital and Seagate closed higher. Only DRAM and NAND names fell. The debate has moved from whether memory demand is real to when Micron's margins peak — and no analyst has cut a target through a 34% drawdown.

Bioprocessing single-use bioreactor equipment in a life-sciences manufacturing facility, illustrating Danaher's Q2 2026 core revenue guidance cut that drove the stock down about 13% on July 21, 2026
Stock AnalysisJuly 21, 2026 · 13 min read

Why did Danaher (DHR) stock fall ~13% on July 21, 2026 — a beat-and-raise undone by a core revenue guidance cut

Danaher fell nearly 13% on July 21, 2026 despite beating on adjusted EPS and raising its full-year earnings guidance. The company tied that raise partly to completing the Masimo acquisition early — while cutting full-year core revenue growth guidance to 3–4% from 3–6% and marking bioprocessing down to mid-single-digit growth. The market paid for the organic line, not the inorganic one. Bioprocessing peers Repligen and Sartorius fell in sympathy while instrument makers rose, on a day the broad market was up ~1%.

A large AI data center campus under construction on the Texas coastal plain at dusk, illustrating Hut 8's second $9.8 billion Beacon Point lease that drove the stock up about 11% on July 20, 2026
Stock AnalysisJuly 20, 2026 · 18 min read

Why did Hut 8 (HUT) stock jump ~11% on July 20, 2026 — a second $9.8 billion Beacon Point lease that fully commercializes a 1 GW campus

Hut 8 jumped about 11% on July 20, 2026 after a second 352 MW, 15-year, $9.8 billion lease fully commercialized its 1 GW Beacon Point campus in Texas — signed by the same unnamed tenant that took Phase 1 in May. The deeper significance is financing: Phase 1 was funded with $4.25 billion of non-recourse, Baa2-rated notes, and an anchor lease is the precondition for repeating that. But the move only round-trips a two-session drop, leaving the stock below where it closed on Wednesday.