I have bought an ETF tracking the **Nifty50**. The ETF is **iShares MSCI India UCITS ETF USD (Acc)**
Over more than a year, the Nifty50 went up by **10%**, my ETF went **DOWN 10%**, and it made the total gain of my portfolio close to 0 canceling out all other gains.
Why did the ETF do disastrously while the index it follows went up?