Price change
Exchange price only. Cash distributions are omitted.
(end price ÷ start price) − 1Monopoly MOAT Research Desk RD / RETURNS
Performance basis calibrator
Return-Basis Truth Sheet
Calculate matched raw or adjusted-close market-price returns, then compare them with the same dates, currency, basis, and proxy.
By Monopoly MOAT Research Desk · Methodology v1.0 · Tool reviewed August 26, 2026 · Source dates shown below
ONE-SENTENCE ANSWER
ETF returns are comparable only when dates, currency, distribution treatment, and return basis match.
NAV total return, adjusted market-price return, raw price change, and index return answer different questions. This tool labels the basis before showing the number.
DAILY MATCHED SET
MPLY, MOAT, TOLL, and SPY.
Checking the complete adjusted-close set…
If a fresh, complete common-date set is unavailable, we will not combine partial market data with a differently dated NAV series.
Method source: Marketstack v1 EOD documentation. Official fund-performance links remain separate in the source docket.
MANUAL CALIBRATOR
Check two matched value series.
Use raw closes for price change or provider-adjusted closes for a distribution-adjusted market-price estimate. Do not enter ordinary NAV values and call the result NAV total return.
Adjusted market price
Provider-adjusted closes intended to reflect splits and distributions. Label as an estimate.
(end adjusted ÷ start adjusted) − 1NAV total return
Use an issuer-published return or documented NAV total-return index. Do not infer it from two ordinary NAV points.
issuer methodology controlsIndex return
Specify price, gross total, or net total return. An investable ETF proxy is not the index.
variant requiredFIELD SHEET / PDF
Keep the method, not just the answer.
An eight-page truth sheet with basis definitions, boundary rules, formula lab, error checks, and a printable methodology receipt.
- US-Letter printable edition
- Versioned methodology and source docket
- No recommendation, rating, or sponsored placement
PLAIN-ENGLISH ANSWERS
Questions this instrument should settle.
What is the difference between NAV and market-price return?
NAV return measures change in the fund's per-share net asset value under the fund's methodology. Market-price return measures exchange prices. They can differ because shares trade at premiums or discounts and because calculation conventions differ.
Does adjusted close include dividends?
A provider's adjusted close is generally intended to reflect splits and distributions, but the exact methodology belongs to that provider. This site labels Marketstack adjusted-close results as distribution-adjusted market-price total-return estimates, not official issuer NAV returns.
How are ETF YTD and trailing one-year returns calculated here?
The live panel uses a complete common set of trading dates for MPLY, MOAT, TOLL, and SPY. YTD starts at the last common close on or before the prior year-end; trailing one year starts at the last common close on or before the one-year anniversary.
Is SPY the S&P 500?
No. SPY is an investable ETF designed to track the S&P 500 Index. This site labels it as an S&P 500 ETF proxy and does not present SPY's return as the index's return.
SOURCE DOCKET
Trace every material claim.
Each date belongs to its own source. Absence, unknowns, and derived calculations are labelled rather than silently filled.
- 01Marketstack v1 EOD documentationMarketstack / APILayer
- 02MPLY official performanceStrategy Shares
- 03MOAT official performanceVanEck
- 04TOLL official performanceTema
- 05SPY official performanceState Street