Compare SEC filing research tools
See what changed in companies’ 10-K risk factors.
RiskDiff compares Item 1A, the risk-factor section of annual SEC 10-K filings, showing word-for-word changes. Follow each factor across years and explore risk themes across companies.
Risk matching uses deterministic machine learning. Comparisons link to SEC source filings, and AI interpretation is labeled separately.
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What RiskDiff shows
Added, removed and modified factors
Risk factors are matched across annual filings and classified by change. See which factors were added or removed, which were modified, and which stayed unchanged.
Word-for-word changes
Highlighted additions and deletions show the edits within each matched factor, alongside the previous wording.
SEC source filings
Open the linked SEC EDGAR filings to check a passage in its original context. Automated extraction and matching can contain errors.
Risk themes across companies
Signals groups keyword matches for themes such as AI, cybersecurity and tariffs across cached comparisons. Open the matches to inspect the underlying disclosures.
Copart (CPRT) · 2025 vs 2024
Example: what changed in Copart’s 10-K
This example shows one edit within Copart’s risk factor about expansion outside the U.S. RiskDiff matches the factor across filings and marks it as modified. The added wording is highlighted in green.
Before · 2024 10-K
the need to comply with complex foreign and U.S. laws and regulations that apply to our international operations;
After · 2025 10-K
the need to comply with complex foreign and U.S. laws and regulations that apply to our international operations, including changes in laws that may have an adverse effect on our ability to operate our preferred business model in foreign jurisdictions;
The added qualification concerns changes in laws affecting the company’s preferred business model abroad. The earlier filing already discussed foreign-law compliance. This edit does not show that international regulatory risk was new, or establish its investment significance.
RiskDiff groups this edit within the matched international-expansion risk factor. For this pair, the comparison identifies 15 modified and 19 unchanged factors, with none added or removed.
Open this example comparison · Read the extraction and matching limits
Compare SEC filing research tools
Read the individual comparisons: RiskDiff vs BamSEC · RiskDiff vs CapEdge.
| Feature | RiskDiff | CapEdge | BamSEC | sec-api.io | SEC EDGAR MCPby Stefano Amorelli |
|---|---|---|---|---|---|
| Built for | Annual risk-factor analysis | Broad filing research | Filings, transcripts and tables | SEC data for developers | EDGAR access for agents |
| How changes are organised | Matched risk factors | Document text diffs | Document comparisons | Section extraction | Section extraction |
| Risk-factor detail | Added, removed, modified and unchangedExact edits within each factor | Document additions and removals | Risk-factor classification not documented | Extracted section text | Extracted section text |
| Themes across companies | Ready-made risk-theme SignalsKeyword matches across available comparison years | Full-text search | Search and search alerts | Full-text search on Business/Enterprise | Build analysis from retrieved filings |
| Agent access | Hosted MCPPro: comparisons and history | Not documented | Not documented | Hosted MCP and APIs | Self-hosted MCP |
| Price (USD) | Signals $29/mo · Pro $199/moAnnual: $290 / $1,990 | Free | $69/mo, billed annually | From $49/mo, billed annually100 free calls total; licence limits apply | Open-source AGPL-3.0Hosting/model costs separate |
Full comparisons and history with Pro
Public previews show summary counts and one selected change. Pro includes all changes in each comparison and the company’s available comparison history.
Pro also includes Signals, individual JSON and Markdown exports, and MCP access using an API key for compatible agents.
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