ETF Overlap Tool vs Signalry
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
ETF Overlap Tool compared with Signalry
| Detail | EO
ETF Overlap Tool | 
Signalry |
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| What it does | Free ETF overlap calculator comparing actual holdings from SEC filings and issuer data
| Browser and server SDKs to measure events and send them to advertising and analytics platforms
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| Stage | Established
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| Founded | Not given
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| Based in | RS
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| Pricing model | Free
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| Pricing | Not given
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| Key features | - Compare two ETFs for weight and count overlap
- Multi-ETF compare tool for up to five ETFs
- 80 ETFs available including US-listed and UCITS
- Holdings data updated daily from SEC filings and issuer feeds
- Sector breakdown and concentration analysis
- ETF directory with profiles and holdings tables
- Educational guides and methodology documentation
| - Browser SDK (signalry.js) for recording visits, UTM parameters, referrer, consent and user events
- Server-side event sending via REST API with support for purchase, refund and lead events
- Automatic event validation against organization's event catalog
- Event deduplication and automatic delivery to connected platforms
- Automatic page view tracking and single-page app support
- Consent management for advertising and analytics identifiers
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| What makes it different | - Compares actual holdings resolved to canonical securities, not just fund categories
- Data sourced from authoritative sources: direct issuer feeds and SEC EDGAR filings
- Independent operator not affiliated with fund companies or paid by issuers
- Both weight and count overlap metrics to answer different portfolio questions
- Methodology and data sources fully documented and verifiable
| - No Tag Manager or pixels to paste - SDKs handle all platform delivery
- Centralized platform configuration in console instead of code changes
- Server-side event safety ensures purchases are not lost when visitor closes tab or uses ad blocker
- Unified event tracking with same event ID in browser pixel and server copy
- Automatic deduplication prevents double-counting from retries and repeated events
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 1 | 0 |
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| Citation Flow (Majestic) | 12 | 0 |
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| Referring domains (Majestic) | 6 | 0 |
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3 details filled in for both companies.
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