"iShares Diversified Commodity Swap UCITS ETF (DE)" is an exchange-traded investment fund (ETF). It refers to the Bloomberg Commodity Index. This index reflects the development of world wide commodity futures . The ETF replicates its index using synthetic replication, so the index performance is realized using a swap contract. The ETF's earnings are automatically reinvested (accumulated). The fund company iShares claims a total expense ratio (TER) of 0.46% per year. The yearly average divergence from the index performance (Tracking Difference) since 2008 was 1.06% per year. Therefore, the ETF was significantly more expensive than the TER suggests. Besides, the yearly tracking differences had strong variations, so their average value is not a very reliable measure.
Comparing Tracking Difference, Total Expense Ratio and fund size
Every bubble represents an ETF. The further to the right it is, the higher (worse) is its tracking difference. The further up it is, the higher the total expense ratio specified by the fund company. The bubble's area represents the fund volume.