"Amundi S&P 500 Buyback UCITS ETF - EUR (C)" is an exchange-traded investment fund (ETF). It refers to the S&P 500 Buyback Index. This index reflects the development of US American stocks . The ETF replicates its index using synthetic replication, so the index performance is realized using a swap contract. The ETF's earnings (dividends) are automatically reinvested (accumulated). The fund company Amundi claims a total expense ratio (TER) of 0.15% per year. The yearly average divergence from the index performance (Tracking Difference) since 2016 was 0.34% per year. Therefore, the ETF was more expensive than the TER suggests.