Railways PSU ETF delivers 16% in a week. Is this the right opportunity for portfolio diversification?

A railways PSU-focused ETF delivered a sharp 16% gain in just one week, as per ETMutualFunds analysis. The Groww Nifty India Railways PSU ETF rose 16.41%, while the corresponding index fund returned 16.35%. Both are benchmarked against the Nifty India Railways PSU Index – TRI, which surged 16.46%, reflecting renewed investor interest in the sector.