What is SignalX?
SignalX automatically collects, parses, and analyzes SEC EDGAR and Korean DART filings for 2,400+ publicly traded companies. Instead of manually reading through lengthy filings, you get AI-powered bullet summaries, structured financial data, and cross-signal detection, all in real time.
50,000+ Filings
Collected and parsed
8 Filing Types
10-K, 10-Q, 8-K, 20-F, 6-K, 13F, Form 4, SC 13D/G
AI-Powered
Bullet summaries for every section
Overview Dashboard
All signals at a glance
The main dashboard shows a real-time summary of SEC filing activity. You can see filing counts by type, recent insider transactions, fund holding changes, and 8-K event distribution: all in one view.
Key Features
- Filing activity timeline: visualize submission patterns over time
- Insider sentiment gauge: net buy/sell ratio across all tracked companies
- Cross signals: detect when multiple filing types converge on one company
- 8-K event distribution: see which event types are trending
Check the Overview first thing in the morning to catch overnight filings from international companies (20-F, 6-K).
Item 2.02: Q1 FY26 results, revenue up 262% YoY
CEO Elon Musk: disposition 35,000 shares
Annual report: AI revenue contribution detailed
Q1 2026 holdings: increased AAPL, trimmed BAC
Item 5.02: CFO transition announced
Director Karp: acquired 12,000 shares
Activist Engine Capital:5.4% stake disclosed
Companies
Deep dive into individual entities
Search and browse 2,400+ tracked companies (S&P 500, Nasdaq 100, Russell 2000). Each company page shows stock price charts, XBRL financials, AI-generated summaries, insider transactions, and fund holdings.
Key Features
- Stock chart with filing date markers: see price impact of disclosures
- XBRL financials: revenue, net income, EPS extracted automatically
- AI summaries: bullet-point analysis of each filing section
- Insider & holdings tabs: who's buying/selling, which funds hold the stock
Add companies to your Watchlist to track them across all filing types in one place.
- •Services revenue hit $96B, 24% of total revenue mix
- •iPhone unit volumes flat YoY, ASP up 4%
- •$110B buyback authorized, dividend raised 4%
Annual Reports (10-K / 20-F)
Comprehensive yearly disclosures
10-K filings contain a company's complete annual financial story: business overview, risk factors, MD&A (Management Discussion & Analysis), and audited financial statements. 20-F is the equivalent for foreign private issuers.
Key Features
- Section-by-section AI analysis: Business, Risk Factors, MD&A parsed separately
- XBRL financial extraction: key metrics pulled from structured data
- Multi-period comparison: analyze changes across fiscal years
- Full document viewer: read the original SEC filing inline
Use the AI Analyze button to generate bullet summaries. The system extracts XBRL financials automatically: no manual data entry needed.
- •Data center revenue $115B FY24, up 217% YoY on Hopper and Blackwell ramps
- •Networking attached to AI clusters grew to $13B run rate from $10B
- •Auto and robotics segment $1.7B, up 55% on advanced driver-assist wins
- •China export controls on H20 and successor SKUs may reduce addressable market
- •Customer concentration: top four hyperscalers account for ~46% of revenue
- •Supply concentration on TSMC CoWoS packaging creates single-source risk
- •Gross margin 75.0% non-GAAP, up 240bps YoY on Blackwell mix and pricing
- •Opex grew 44%, materially slower than 126% revenue growth, operating leverage on display
- •Operating cash flow $64B, capex $3.2B, $34B returned via buyback and dividend
Current Reports (8-K)
Material events as they happen
8-K filings report material events: earnings releases, executive changes, M&A announcements, asset acquisitions, and more. These are the most time-sensitive SEC filings.
Key Features
- Event type classification: Item 1.01 (Agreements), 2.02 (Earnings), 5.02 (Leadership), etc.
- AI event summaries: bullet points focused on investor impact
- Event distribution chart: see which event types dominate
- Real-time collection: new 8-Ks appear within hours of SEC submission
Filter by event type (e.g., Item 2.02 for earnings) to focus on the signals that matter to your strategy.
- •CFO Luca Maestri to transition end of FY24, succeeded by VP of Finance Kevan Parekh
- •Maestri remains as Vice President leading Corporate Services through 2025
- •Q1 revenue $21.3B, down 9% YoY on lower ASPs across all vehicle programs
- •Automotive gross margin 16.4% ex-credits, lowest since Q4 2020
- •Energy storage deployments up 102% to record 9.4 GWh
- •Agreement to acquire Spirit AeroSystems for $4.7B in stock, total enterprise value $8.3B
- •Closing expected mid-2025 subject to regulatory approval and SPR shareholder vote
Insider Trading (Form 4)
Track what executives are doing with their own stock
Form 4 filings reveal when company insiders (CEOs, CFOs, directors, and 10% owners) buy or sell shares. These transactions must be reported within 2 business days.
Key Features
- Transaction details: shares, price, value, and transaction type
- Role-based filtering: see activity by CEOs, CFOs, directors separately
- Weekly sentiment: aggregate buy/sell ratio over time
- Company-level insider summary: net insider activity per company
Insider purchases are generally more informative than sales. Executives sell for many reasons (diversification, taxes), but they buy for one reason: they think the stock is going up.
Fund Holdings (13F-HR)
See what institutional investors own
13F-HR filings are quarterly snapshots of institutional investment managers' equity holdings. Funds managing $100M+ must disclose their positions within 45 days of quarter-end.
Key Features
- Cross-fund analysis: see which stocks multiple top funds own
- Position changes: new positions, increased/decreased stakes, exits
- Fund portfolio overview: browse holdings by fund
- Historical tracking: compare holdings across quarters
Focus on new positions and significant increases: these represent the fund's highest-conviction current ideas.
Activist Filings (SC 13D/G)
Detect activist investor campaigns
SC 13D filings are required when an investor acquires 5%+ of a company's shares with an activist intent. SC 13G is the passive version. Both signal significant ownership concentration.
Key Features
- Ownership percentage tracking: see exact stake sizes
- Purpose of transaction: activist intent vs. passive investment
- Amendment tracking: follow changes in activist positions
- Company impact view: see all activist investors targeting one company
SC 13D (not 13G) is the one to watch: it signals the investor has plans to influence the company. Look for 'Purpose of Transaction' language about board seats or strategic changes.
“Plans to engage board on capital allocation and operational restructuring”
“Continues to advocate for free cash flow discipline and capex review”
“Passive holding, no intent to influence control”
Korean Filings (DART)
Track the Korean market alongside U.S. filings
Beyond SEC EDGAR, SignalX collects Korean corporate disclosures from DART (Data Analysis, Retrieval and Transfer System), the official repository operated by South Korea's Financial Supervisory Service. Follow KOSPI and KOSDAQ companies with the same AI-powered analysis you get for U.S. filings.
Key Features
- Korean annual and quarterly reports (사업보고서, 분기보고서) parsed and summarized
- Material event disclosures (주요사항보고서) surfaced as they are filed
- Cross-market view: research Korean and U.S. companies in one place
- AI summaries available in both English and Korean
Use DART coverage to research Korean names and cross-listed ADRs without switching platforms or languages.
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AI Research Chat
Ask questions about SEC filings
The AI Chat feature lets you ask natural language questions about SEC filings, company financials, and market signals. It searches across all collected data to provide sourced answers.
Key Features
- Natural language queries: 'What did Apple's CEO say about AI in their latest 10-K?'
- Cross-filing search: finds relevant information across multiple filing types
- Sourced responses: every answer links back to the original SEC filing
- Follow-up conversations: refine your research interactively
Be specific in your questions. Instead of 'Tell me about Tesla', try 'What are Tesla's key risk factors from their latest 10-K?'
Screener
Filter the whole market by signal, not by ticker
The Screener scans every tracked company at once, ranking and filtering by the signals that matter. Three dedicated screens cover insider trading, institutional holdings, and financial metrics: all built on the same SEC data as the rest of SignalX.
Key Features
- Insiders screener: rank recent Form 4 buys and sells by role and period
- Holdings screener: find the stocks held by the most institutional funds
- Financials screener: sort by revenue, net income, gross margin, and ROE
- Publicly accessible: explore and share a screen without logging in
Start broad in the Screener to build a shortlist, then open a company page for the deep dive.
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Sector Hubs
See filing activity grouped by industry
Sector hubs group companies by industry so you can spot themes across a whole sector at once: which technology names are reporting earnings, where insider buying is clustering, or how a group of banks compares on the numbers.
Key Features
- Curated company lists for each major sector
- Sector-level filing activity and recent disclosures
- Jump straight from a sector hub to any company page
- Public pages optimized for discovery and sharing
Use sector hubs for top-down research: pick a sector view first, then drill into the standout companies.
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Public Stock Pages
A shareable overview for every company
Every tracked company has a public stock page with its overview, AI filing summaries, XBRL financials, and full filings history. These pages are open to everyone with no login required, so you can reference or share your research freely.
Key Features
- Company overview with stock chart and key financials
- AI summaries for 10-K, 10-Q, and 8-K filings
- Full filings table with links to the original SEC documents
- FAQ and structured data optimized for search engines
Bookmark a company's stock page to keep its latest AI summaries and filings one click away.
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