Best ETF research tools, compared on what they actually do
Updated September 11, 2026. Competitor details last checked August 24, 2026.
Seven ETF research tools, tested on four checkable capabilities as of August 24, 2026. ETF Copilot is the only one that shows a fund's valuation against its own history rather than as a bare number. Stock Analysis is the strongest free starting point — full fund profiles, holdings counts and a screener with no account — and Morningstar Investor pairs written analyst judgement with a forward-looking rating.
What that is worth: the US equity market trades at a P/E of 19.0, against a 9-year median of 17.2 — higher than 76% of that period. A tool that prints today's figure alone cannot tell you which of those you are looking at.
The seven research tools, compared
Most "best ETF tool" lists rank on opinion. This one ranks on what you can verify yourself in about ten minutes: what it costs, and whether it can answer four specific questions about a fund. Every cell below was read on the tool's own site, logged out.
| Tool | Free tier | Paid /mo | Valuation vs own history | Valuation vs peers | Holdings overlap | Explains what changed |
|---|---|---|---|---|---|---|
| Stock Analysis | Yes | $9.99 | No | Bare P/E | Side by side | No |
| Morningstar Investor | Partial | $34.95 | — | — | Paid, X-Ray | Analyst prose |
| ETF Copilotthis site | Yes | $20 | Yes | Yes | Both ways | Daily |
| ETF Research Center | Yes | $29 | No | Vs category | By weight | No |
| ETFdb / VettaFi | Yes | Not published | No | Category avg | Not quantified | — |
| Koyfin | Yes | $39 | Paid | Paid | Not found | No |
| Yahoo Finance | Yes | $7.95 | No | Returns only | No | No |
Checked on each provider's own site · monthly price in USD where published · an em-dash means the capability could not be established, because the provider blocks automated access — never a guessed "no".
What each column measures
- Valuation vs the fund's own past — is it expensive for this fund, not just today's number.
- Valuation vs peers — placed against a category or a universe.
- Holdings overlap — how much of two funds is the same companies.
- Explains what changed — what moved since you last looked.
What counts as each capability
- Valuation vs own history
- Whether the tool shows where a fund's multiple sits against its own past, rather than only today's figure. It requires holding every past constituent list matched to the fundamentals as they stood then, which is why it is rare at any price. What it takes to build.
- Valuation vs peers
- Whether the fund's multiple is placed against a category or a universe rather than printed bare. A category average counts; a raw P/E on its own does not.
- Holdings overlap
- Whether two funds can be compared by how much of their weight sits in the same companies. A side-by-side view of two funds' top ten does not count. The overlap tools in detail.
- Explains what changed
- Whether the tool tells you what moved and why since you last looked, rather than leaving you to diff two screens yourself.
What is not on this list, and why
Google Finance was checked and excluded. For VOO it renders seven price fields and nothing else — no expense ratio, no assets, no holdings, no sectors, no screener. Ask it about a single stock and it shows a price-to-earnings ratio and a market capitalisation, so the capability exists and simply is not populated for funds. It is a quote page rather than a research tool.
justETF was excluded for a different reason: it is genuinely good, but it covers UCITS funds for a European audience rather than US-listed ETFs, so it is not an alternative to the others here for the same question.
Which one to use, by what you are trying to do
- Check a fund for free
- Stock Analysis — full profiles, holdings counts and top-10 weights, no account, no paywall on the basics. Its paid tier is $9.99 a month.
- A human opinion on a fund
- Morningstar Investor — analyst write-ups and a forward-looking rating, which no automated tool produces. The most expensive option here. See what your funds actually hold.
- Whether a fund is expensive right now
- ETF Copilot — most tools show a fund's P/E as a bare number and a few show it against a category average. This one builds the multiple from the fund's actual holdings and shows it both against the fund's own history and against the whole US equity ETF universe. How that works.
- Find duplicate holdings across funds
- ETF Research Center — the deepest single-pair overlap tool here: overlap by weight, both directions and sector drift, without an account. How overlap is measured.
- Professional charting
- Koyfin — the only other tool here that can plot a valuation measure over time, on its $39-a-month tier. Its ETF coverage is thinner than its equity coverage.
- Free quotes and a quick screen
- Yahoo Finance — top-10 weights, sector breakdown and a free ETF screener with no account, which is where a great many people start. It stops at the research line: a bare multiple with no history and no peer context, and no way to compare two funds' holdings.
What is the best free ETF research tool?
Stock Analysis, on current pricing. It shows full fund profiles, holdings counts and top-10 weights with no account, and its screener is free. For holdings overlap specifically, ETF Research Center's free tool is better. For a fund's valuation against its own history, no free tool covers it — that is the gap this site was built around.
Which tool shows how much two ETFs overlap?
ETF Research Center has the deepest version, reporting overlap by weight rather than a count of shared names, plus sector drift. ETF Copilot computes every pair in its universe daily instead of on request. ETFdb offers a head-to-head comparison but does not produce an overlap percentage. The six overlap tools compared.
Is Morningstar Investor worth the subscription?
It depends on whether you want a judgement or a measurement. Morningstar is the only tool here publishing analyst opinion and a forward-looking rating. If what you need is holdings, weights, costs and screening — or to see what your funds hold when you add them up — several free tools cover it. What answers each question.
How was this list compiled?
Each capability was checked against the tool's own live site rather than from press coverage or other comparison pages, logged out, on August 24, 2026. Where a provider's own pages disagreed, the live pricing page was taken as correct. Two providers — Morningstar and ETFdb/VettaFi — refuse automated access; cells that could not be established for them are em-dashes, and Morningstar's price is the rate it publishes to subscribers rather than one read off its pricing page. Prices and features change; this page is re-verified quarterly and the date above is the last check.
See these measurements on any fund →
About this comparison. ETF Copilot is one of the tools listed here, and is held to the same published criteria as every other, with its results read the same way. Every other tool is an independent product. No listing is paid for, there are no affiliate links, and links to other providers are ordinary links.
Nothing on this page is investment advice, a recommendation, or a forecast of returns.