Quartz Sea Research vs The Diff
Quartz Sea Research and The Diff both sit in Equity & Company Research, and are compared here on the same fields used across the index: Research Authority Score, published price, asset class, format and vintage. Both are classified independently, and neither pays for its position on this page.
Choose Quartz Sea Research for
- —a higher Research Authority Score (98 against 95)
Choose The Diff for
- —a cheaper entry tier (~$20/mo · $200/yr against Free · $30/mo · $500/mo · from $25,000/yr)
- —a longer track record (publishing since 2019)
Data verified 2026-10-04 · independent scoring, no paid rankings
| Field | Quartz Sea Research | The Diff |
|---|---|---|
| Research Authority | 98/100 | 95/100 |
| Type | Analysis | Analysis |
| Category | Equity & Company Research | Equity & Company Research |
| Asset classes | Equities | Equities |
| Niche | European defense & aerospace equities | Technology & financial infrastructure |
| Price | Free · $30/mo · $500/mo · from $25,000/yr | ~$20/mo · $200/yr |
| Access | Freemium | Freemium |
| Founded | 2026 | 2019 |
| Region | Pan-European | United States |
| HQ | Pan-European Coverage | New York, US |
Also consider
Desks that overlap with Quartz Sea Research and The Diff on category, tags or asset class, ranked by Research Authority.
Net Interest
Financial Sector Insights from a Former Hedge Fund Manager
Niche · Banks, fintech & the financial sector
Stratechery
Analysis of the Business & Strategy of Technology
Niche · Technology platforms & strategy
Compounding Quality
Quality Compounders & Portfolio Tracking
Niche · Quality compounding equities
Mostly Borrowed Ideas
Institutional-Grade Deep-Dive Equity Research
Niche · Large-cap compounders & software deep dives
Kakashii's Materials
AI, Semiconductors & the Magnificent 7 — Due Diligence & Red Flags
Niche · AI/semis red flags & the Mag-7 bear case
The Information
Deep Tech, Media & Business Journalism
Niche · Technology, media & venture capital
Asian Century Stocks
Asian & Emerging Market Equity Research
Niche · Asian & emerging-market equities
Quiver Quantitative
Alternative Data & Congress Trades
Niche · Alt-data & congressional trading
Frequently asked questions
Is Quartz Sea Research better than The Diff?
They lead on different things. Quartz Sea Research scores 98/100 on Research Authority and covers European defense & aerospace equities; The Diff scores 95/100 and covers Technology & financial infrastructure. Quartz Sea Research is the stronger pick if you want a higher Research Authority Score (98 against 95). The Diff is the stronger pick for a cheaper entry tier (~$20/mo · $200/yr against Free · $30/mo · $500/mo · from $25,000/yr), or a longer track record (publishing since 2019).
Is Quartz Sea Research cheaper than The Diff?
Quartz Sea Research lists Free · $30/mo · $500/mo · from $25,000/yr (Freemium); The Diff lists ~$20/mo · $200/yr (Freemium). Price is only comparable at the tier level: an entry tier at one desk and an institutional tier at another are not the same product, so check which tier actually gives you the coverage you need.
What is the difference between Quartz Sea Research and The Diff?
Quartz Sea Research is classified as Analysis covering Equities, publishing since 2026 from Pan-European. The Diff is classified as Analysis covering Equities, publishing since 2019 from United States. The practical difference is usually format: both publish in the same format, so the split is coverage and price.
Can I subscribe to both Quartz Sea Research and The Diff?
Yes, and for desks in the same category it is often rational: overlapping coverage confirms or contradicts a thesis, which is useful when you are sizing a position. The cost test is whether the second subscription changes a decision. If it only repeats the first, the money is better spent on a desk in a category you do not currently read.