New Delhi, June 3 -- Tracking error remains a key measure to track an index fund's performance. It measures how closely an index fund or ETF replicates the returns of its benchmark index. A lower tracking error generally indicates that the fund is more closely aligned with the performance of the underlying index.

Since mid cap index funds are designed to follow mid-cap indices, tracking error is an important factor to consider before investing. So, let's take a look at the top 5 mid cap index funds with the lowest tracking error.

Mid cap index funds are a type of index fund that replicate the performance of mid-cap indices such as the NIFTY Midcap 150 by holding the same stocks in similar proportions.

Mid-cap stocks are shares of compa...