"Vanguard U.S. Treasury 0-1 Year Bond UCITS ETF (USD) Accumulating" is an exchange-traded investment fund (ETF). It refers to the Bloomberg Short Treasury Index. This index reflects the development of securities . The ETF replicates its index using physical replication with sampling, so it contains the most important securities of its reference index. The ETF's earnings are automatically reinvested (accumulated). The fund company Vanguard claims a total expense ratio (TER) of 0.05% per year. The yearly average divergence from the index performance (Tracking Difference) since 2021 was 0.06% per year. Therefore, the ETF was slightly more expensive than the TER suggests.