Source: daily_prices:fmp_change_percent
Changes History →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.
Investment research built around change detection.
BestStocks identifies what changed across companies and sectors, explains why it matters, and helps investors spot opportunities worth investigating.
What changed: Fermi Inc. Common Stock moved -7.17% from $3.69 to $3.43 on 2026-10-09, closing at a new 52-week low. The decline was driven by execution risks and extended timelines on its flagship Project Matador infrastructure site in Texas, with the TensorWave lease closing date pushed to October 31, 2026 as contract and financing details are finalized.
Source: daily_prices:fmp_change_percent
Changes History →Fermi's earnings announcement scheduled for November 9, 2026 (consensus EPS estimate −$0.04) and the TensorWave lease closing on October 31, 2026 will be key milestones to track.
What changed: Amkor Technology, Inc. (AMKR) moved -5.17% from $51.80 to $49.12 on 2026-10-09. The company announced it is raising 2026 capital expenditure to $2.5–$3.0 billion to meet AI and advanced-packaging demand growth.
Source: daily_prices:fmp_change_percent
Changes History →AMKR earnings scheduled for 2026-10-26; consensus EPS estimate is $0.77.
What changed: Rush Street Interactive (RSI) moved -7.40% to $18.90 on October 9, 2026, after Susquehanna cut its price target from $37 to $27, citing higher-than-expected marketing expenses and reduced profit-scaling outlook. Macquarie also trimmed its target from $35 to $33 earlier in the week. Recent insider stock sales by the CEO and CFO added to downward pressure.
Source: daily_prices:fmp_change_percent
Changes History →Q3 2026 earnings release on October 28, 2026 after market close; consensus EPS estimate is $0.14.
Moderna surged +11.51% to $219.68, driven by two catalysts: an exclusive report (New York Times, per web sources) detailing a major national public-private partnership to accelerate mRNA cancer vaccine development, and the company's official reinclusion in the Nasdaq-100 Index effective today. Volume traded 2.15x the historical average for this time of day, signaling broad institutional participation.
Moderna joined the Nasdaq-100 Index effective October 9, 2026, replacing Warner Bros. Discovery, triggering mechanical buying from passive index funds and ETFs. The stock surged 9.02% to $214.78 on elevated volume (2.34x expected for this time of day), hitting a 52-week high near $212.53 according to investing.com.
Moderna surged 4.50% to $205.86 after joining the Nasdaq-100 Index effective October 9, 2026, replacing Warner Bros. Discovery (ir.nasdaq.com). The inclusion triggered mechanical index-tracking buying from passive funds and ETFs at market open. Volume hit 11.5M shares in the first 80 minutes—3.51x the time-adjusted average—and the stock hit a 52-week high of $212.53.
Moderna earnings on 2026-11-05 (consensus EPS estimate: −$1.10); official details and timeline confirmation for the NIH cancer vaccine partnership at its December launch.
Crown Castle announced an $8.5 billion sale of its fiber and small cell businesses as part of a broad business reshaping (Yahoo Finance, Feb 11, 2026). The stock surged 14.28% to $78.73 on unusually heavy volume of 4.9 million shares (4.36x the time-adjusted expected average), signaling strong investor interest in the divestiture strategy.
Crown Castle Inc. (CCI) surged +10.07% to $75.83 in intraday trading, though no specific catalyst from earnings, guidance, M&A, or analyst action has been identified in available sources at this time. The move occurs 45 minutes into the session with volume data still settling.
CCI earnings on October 21, 2026 (consensus EPS estimate $0.68) and updates on the fiber/small cell sale completion timeline.
AST SpaceMobile shares fell 13.91% to $49.01 as SpaceX secured a low-band spectrum deal from Grain Management, closing off a critical expansion pathway for ASTS, per 247wallst.com. The move was amplified by elevated volume (21.7M shares, 6.46x normal for this time of day), with shares sliding to near their 52-week low of $48.82.
AST SpaceMobile fell 8.47% to $52.11, extending a multi-day decline driven by regulatory headwinds and competitive pressures. The FCC's recent approval of SpaceX to build a direct-to-device satellite network using its own spectrum directly threatens ASTS's carrier-partnership model, per Yahoo Finance; simultaneously, ongoing securities class-action lawsuits and investor deadline notices (with deadlines in November 2026) continue to weigh on sentiment.
ASTS earnings scheduled for November 9, 2026 (consensus EPS estimate: -$0.40); watch for management commentary on competitive response and revised capacity/coverage plans.
Humana surged 11.84% after the Centers for Medicare & Medicaid Services released its final 2027 Medicare Advantage Star Ratings, showing 95% of HUM's Medicare Advantage members will be in 4-star or higher plans—a dramatic jump from 20% in 2026 (Reuters, Yahoo Finance). The company's flagship H5216 contract recovered to 4 stars from 3.5 stars, restoring eligibility for quality bonus payments affecting ~2.4 million members. Analyst Baird upgraded HUM from Neutral to Outperform and raised its price target to $596.
Humana surged 16.26% to $450.08 after disclosing that 95% of its Medicare Advantage members are enrolled in 4-star plans for 2027, a material improvement in quality ratings that expands eligibility for bonus payments (Wall Street Journal, 2026-10-09). The move also coincided with at least one analyst turning bullish on the stock (Benzinga), while sector peers CVS declined 3% and UnitedHealth held steady, suggesting Humana-specific positive momentum in managed care rankings.
Humana earnings on 2026-11-04 (consensus EPS estimate −$0.90, date not yet confirmed)—likely to update 2027 revenue and earnings guidance based on star-rating monetization.
Verizon fell 11.09% to $41.21 after SpaceX announced a definitive agreement to acquire nationwide 800 MHz low-band spectrum for ~$8 billion to power Starlink Mobile's satellite-to-phone service, according to 247wallst.com. The decline also reflects an analyst price target cut from Scotiabank (from $51.50 to $50.00 citing long-term sector disruption risks) and Verizon's ex-dividend date of October 9 ($0.7075 per share). Volume surged to 43.3M shares, 6.0x the 130-minute average, signaling institutional repositioning.
Verizon fell 7.59% to $42.83 intraday, a sharp single-day decline with no specific catalyst identified in available sources. The move contrasts with the stock's 9.5% year-to-date gain reported as of early September 2025 (per Zacks), suggesting a reversal or reaction to unconfirmed news; volume data is not yet reliable this early in the session.
Verizon earnings on October 20, 2026 (consensus EPS $1.29); management commentary on competitive positioning against satellite-phone entrants and any impact on customer churn or ARPU guidance.
SpaceX's Starlink expansion into mobile services with new spectrum access and FCC backing triggered a sharp selloff across wireless carriers. TMUS fell 12.43% from $171.31 to $150.01, with volume at 4.62x the time-adjusted average, as investors repriced competition risk from satellite-to-cell capabilities (ProactiveInvestors, GuruFocus). The move was part of a broader telecom sector decline affecting AT&T and Verizon as well.
SpaceX's announcement of a definitive agreement to acquire Grain Management's 800 MHz spectrum portfolio for ~$8 billion—which Elon Musk described as the "last critical piece" for Starlink Mobile's nationwide direct-to-cell coverage—triggered a sharp selloff in TMUS and the broader telecom sector (Benzinga). T-Mobile fell 9.12% from $171.31 to $155.69 intraday, alongside steep declines in AT&T and Verizon, as investors reassess the competitive threat to subscriber retention and rural market dominance.
T-Mobile Q3 earnings report (scheduled October 22–28, 2026); management commentary on Starlink competition and impact on churn or promotional intensity.
What changed: American Tower rose 7.34% to $178.96, driven by a sector-wide rebound in communication infrastructure REITs following SpaceX's spectrum acquisition and renewed interest in tower and ground-network assets (investing.com, uk.investing.com). Investors are repricing cell tower operators as potential beneficiaries of hybrid satellite-terrestrial network strategies, with positive sentiment also building ahead of Q3 earnings on October 27.
Detected Oct 9, 3:50 PM ET
Changes History →American Tower Q3 2026 earnings report on October 27, 2026; consensus EPS estimate is $1.64. Monitor for management commentary on tower-utilization trends and any partnership or infrastructure-sharing developments tied to satellite or 5G expansion.
What changed: Ciena surged 4.94% to $446.96, driven by sector-wide bullish momentum in optical networking infrastructure following Marvell Technology's projection that the optical interconnect market could expand 60–70% through 2030—exceeding Ciena's own baseline forecasts (Zacks). The move also reflects investor rotation into high-speed data-center connectivity plays amid AI infrastructure buildout, with peers Corning and Coherent rising on the same tailwinds. Ciena's own recent fiscal Q3 results (record $1.67B revenue, +37% YoY, backlog approaching $8.5B) and long-term 30% revenue growth framework through fiscal 2029 underpin the optimism.
Detected Oct 9, 3:50 PM ET
Changes History →Ciena earnings on 2026-12-10 (consensus EPS: $2.05) and updates on backlog conversion and fiscal 2029 guidance realization.
Latest research
View all research →In-depth equity research from the BestStocks desk — earnings breakdowns, valuation deep dives, and sector analysis behind the changes we detect.

Chipotle (CMG) Surges ~6% on a Report Starbucks Explored a Takeover
Chipotle jumped about 6% to roughly $32.54 on October 8 — after running as high as about $33.40 — on a Financial Times report that Starbucks has explored a potential takeover of the burrito chain. The key word is explored: the report describes preliminary, exploratory interest, not a formal offer, and neither company confirmed a deal, so this is a stock moving on takeover speculation that could reverse if the idea goes no further. The speculation still landed hard — volume ran about three times normal — because a Starbucks–Chipotle combination would be enormous (nearly $50 billion in combined sales, potentially the largest restaurant deal ever if completed) and would reunite Starbucks CEO Brian Niccol with the chain he ran from 2018 to 2024. It resonated partly because Chipotle had become cheap for Chipotle: down about 19% over the past year and trading below the ~$44 average analyst target even after the pop, a high-quality, cash-generative brand at a discount is exactly the profile that draws suitors. But skepticism is warranted: Starbucks fell about 3% on the prospect of a $45-billion-plus deal that would strain its balance sheet mid-turnaround, the strategic fit between coffee and fast-casual Mexican is debatable, and exploratory interest frequently never becomes an offer. The classic M&A-speculation cross-section — target up, acquirer down, McDonald's higher — tells the story; the next hard data is Chipotle's October 28 earnings.

NetApp (NTAP) Rises ~3.5% as Evercore Upgrades to a Street-High $300 on AI Storage
NetApp outperformed a weaker broader market on October 7, rising about 3.5% to roughly $236.50 after Evercore ISI's Amit Daryanani upgraded the stock from In Line to Outperform and set a Street-high $300 price target, up from $210. The move was less about one call than the cluster behind it: over roughly a week, Loop Capital went to $260, TD Cowen to $250, and Goldman to $240, and Evercore has now leapfrogged them all with a rating upgrade — a sell-side re-rating of NetApp as an AI-storage beneficiary, its all-flash arrays and ONTAP software positioned for the data pipelines that feed GPU clusters (a story reinforced by its late-September deal to buy PEAK:AIO and its Novus launch, both earlier developments rather than a fresh catalyst). NetApp rose even as long-dated Treasury yields hit their highest since 2002 in a rates- and oil-driven risk-off that pressured high-multiple shares. But the stock is not cheap: up roughly 96% over the past year, it trades near 23 times forward earnings and 6 times sales for a business growing revenue in the low-double-digits, so the upgrades are betting AI lifts both growth and the multiple. And the Street is genuinely split — the published average target near $206 sits below the price, reflecting both the lag before the newest hikes propagate and real disagreement: a camp of fresh below-price targets (Wedbush's Hold at $170, plus Citi, Barclays and Bank of America in the $190–$220 range) against the bulls at $240–$300. Without an unusually heavy-volume surge, this is a sell-side re-rating; the fundamentals arrive with December 1 earnings.

Vaxcyte (PCVX) Surges ~35% as VAX-31 Meets All Primary Endpoints in Pivotal Phase 3 Trial
Vaxcyte surged to roughly $76 on October 5 — up about 35% after opening near $87 (about +54%) — when it reported positive topline data from OPUS-1, the pivotal adult Phase 3 trial of VAX-31, its 31-valent pneumococcal conjugate vaccine. The trial met all of its prespecified primary endpoints on immune-response and safety measures: in adults 50 and older, VAX-31 met non-inferiority on all 20 serotypes it shares with Pfizer's Prevnar 20 and 17 of the 19 it shares with Merck's Capvaxive (the two exceptions cleared only a less-stringent historical bar), and superiority on the three serotypes unique to VAX-31, with safety similar to the incumbents. It is the profile a broader, 31-valent shot needs to take share in a multi-billion-dollar adult pneumococcal market — and the market priced it as a transfer of value, with Pfizer down about 1.6% and Merck about 3.4% while the biotech index was flat. Vaxcyte is still a clinical-stage, pre-revenue company — a roughly $1 billion annual loss, no P/E, and years from revenue, with two more Phase 3 trials due in 2027 and a planned filing in 2028 — but about $2.5 billion of cash and investments gives it runway, and sell-side targets sit well above the current price (Guggenheim raised its target to $125 the same day; Mizuho and Jefferies reiterated standing Buys at $163 and $146). The stock's gap-up-then-fade captures the tension between clearly good data and the execution still ahead.

PTC Inc. (PTC) Jumps ~35% as Schneider Electric Agrees to a $22.6 Billion Cash Takeover
PTC Inc. jumped about 35% to roughly $194.49 on October 5 after Schneider Electric agreed to acquire the industrial-software maker in an all-cash deal at $205 a share — valuing PTC's equity near $22.6 billion, a 42.3% premium to Friday's close, in what would be Schneider's largest acquisition ever. With a firm cash bid in hand, the stock stopped trading on fundamentals and started trading on deal arithmetic: it gapped toward the offer but settled about 5% below it, a merger spread that prices the time and risk to a close expected by the third quarter of 2027, subject to a PTC shareholder vote and antitrust and CFIUS clearances. The logic is industrial software and AI — PTC's design and lifecycle tools (Creo, Windchill) carry an 84% gross margin and about $935 million of free cash flow, and the company had de-rated with the software group on AI fears, which is what made it available at a price Schneider would pay a premium over. The deal is also a read-through for the sector: design-software peers like Autodesk and Dassault Systèmes rose in sympathy as the price reframed what these assets are worth, while Loop Capital, Baird and Rosenblatt all moved PTC toward Hold/Neutral at the deal price — the textbook reaction to a fixed cash bid. The investment question now is simply whether the deal closes.

Western Digital (WDC) Drops ~10% as Toshiba Plans to Double AI/Data-Center HDD Capacity
Western Digital fell about 10% to roughly $415.50 intraday on October 2 after a report, traced to Nikkei, that Toshiba plans to double its production capacity for the high-capacity hard drives used in AI data centers — a roughly ¥60 billion (about $380 million) investment centered on the Philippines, for its fiscal year ending March 2028. The move had nothing to do with Western Digital itself: the stock's run, up about 216% over the past year, was built on a concentrated, supply-disciplined HDD industry keeping drive prices and margins firm, and a credible new source of capacity from the smallest of the three makers directly challenges that. It was a hard-drive-specific supply scare amid a broadly firm tech tape, not a tech selloff — Seagate, the other pure HDD maker, fell about 12%, while Micron slipped under 1% and Nvidia rose. As a pure-play HDD company after spinning off its flash business as SanDisk, Western Digital has no segment to cushion a pricing threat, and at roughly 21 times forward earnings and 12 times sales its premium multiple embeds an assumption that constrained supply keeps pricing elevated. The analyst picture is bullish — a Buy consensus averaging near $665 — but it predates the Toshiba report, and the open question is how far those targets come down as the Street weighs what added supply means for pricing.

Fair Isaac (FICO) Crashes ~26% as FHFA Moves to Equalize VantageScore Mortgage Pricing
Fair Isaac fell about 26.5% to $617.87 on September 29 — its steepest single-day decline in decades — after FHFA Director Bill Pulte said, in a post late the prior evening, that Fannie Mae and Freddie Mac will move to a single mortgage pricing grid that treats loans scored with Classic FICO and rival VantageScore 4.0 equally, removing the 20-point adjustment that had kept FICO the default. The move strikes FICO's most profitable franchise: its Scores segment runs ~90% operating margins, and the company had just doubled its wholesale mortgage royalty to about $10.00 per score for 2026, while VantageScore 4.0's mortgage score is $0.99 (TransUnion committed through 2028) — so lenders now face a rival score that is roughly ten times cheaper and, once the change takes effect, priced identically by the GSEs. The repricing landed predominantly on FICO: the two publicly traded bureaus that jointly own VantageScore, Equifax and TransUnion, fell materially less — about 3% — and the S&P 500 was flat. Volume ran about seven times normal, and the stock is now down roughly 69% from its 52-week high. Analyst targets are splitting between a stale ~$1,435 consensus and fresh, event-aware resets — Huber Research downgraded to Underweight at $710, while Goldman cut to $1,322 but kept a Buy — capturing how uncertain the migration path is. After the drop FICO trades near 12 times forward earnings, but the multiple now hinges on how fast lenders actually switch.











