Gallery. 1  Hand-cranked planetary sharpener, with cover in place. 2  Hand-cranked planetary sharpener from 1950â60, with cover removed. 3  Hand-cranked planetary sharpener with spring-driven pencil holder. 4  AC-powered electric pencil sharpener. 5  Battery-operated sharpener.
Description. Tracking Error is a measure of how closely an ETF follows its benchmark index. This data point seeks to isolate the ability of the portfolio managers to track the index, ignoring the confounding effects of ETF liquidity on market prices.escription. Tracking Error is a measure of how closely an ETF follows its benchmark index. This data point seeks to isolate the ability of the portfolio managers to track the index, ignoring the confounding effects of ETF liquidity on market prices.
Trading is halted in an ETF due to the consideration of, among other factors: 1) the extent to which trading has ceased in the underlying security(s); 2) whether trading has been halted or suspended in the primary market(s) for any combination of underlying securities accounting for 20% or more of the applicable current index group value; 3) the presence of other unusual conditions or circumstances deemed to be detrimental to the maintenance of a fair and orderly market.