How it works
The expense ratio describes annual operating expenses relative to assets. Those costs reduce fund value, but the realized return gap also depends on transaction costs, cash, sampling, taxes and implementation. Securities lending income may offset some costs. A fee quotation therefore cannot by itself predict the exact annual tracking difference.
Compare the same currency, dates and distribution treatment. A fund's NAV total return and an appropriate total-return index provide a different comparison from an exchange price chart against a price-only index. Gross and net dividend index variants can also produce different apparent shortfalls. State which benchmark the fund actually targets.
Worked example
Suppose a fictional benchmark gains 8% and a fund's NAV total return is 7.6% over the same year. Tracking difference is −0.4 percentage points, or −40 basis points. The relative wealth difference is 1.076 / 1.08 − 1 = approximately −0.37%. A published expense ratio of 0.2% does not explain the remaining gap without additional evidence.
Interpretation and limits
One year's shortfall does not establish future implementation quality. Tracking error requires a series of observations, a sampling frequency and an annualization convention; it cannot be recovered from two annual endpoint returns. Neither measure says whether the benchmark itself is suitable for a particular investor.
Chart practice
Use available closed bars to study fund price behavior, then obtain benchmark definitions and official performance figures separately. Student Wyckoff Pro analyzes charts; it does not turn an ETF price chart into a verified NAV, expense attribution or tracking-error report.
Primary sources
Sources explain the mechanics and limitations; the editorial examples use invented numbers rather than market quotations.
Your next practical step
Continue with analysis of available closed daily, weekly and monthly bars.
Open the first-chart instructions ↗