IWMiShares Russell 2000

The first date of a fund's operations, as documented by the issuer.

The organizational structure of the fund or ETN.

The net total annual fee a fund holder pays to the issuer.

The market value of total assets that a fund has accumulated and now manages on behalf of investors.

It is the daily dollar value of shares traded, averaged over the past 45 trading days.

The difference between the highest price a market participant is willing to pay to buy an ETF and the lowest price at which a market participant is willing to sell an ETF, averaged over the past 60 days, as a percent.

Weighted average ratio of prices of a fund’s stocks to trailing earnings of underlying stocks.

Weighted average ratio of prices of a fund’s stocks to the book value of underlying equity.

The ratio of distributions paid by the fund over the past 12 months, divided by the fund’s NAV.

The date on which a security's price excludes an upcoming dividend.

The number of securities held in the fund as of ETF.com’s analysis date, based on issuer portfolios or the creation basket. If an ETF holds other ETFs, we count every constituent, looking through the ETF wrapper.

A set of rules that the underlying index provider follows to weight its constituent securities.

A set of rules that the underlying index provider follows to select its constituent securities.

This is the index that we have chosen as the best-in-class gauge for each segment's broad market.

Compares returns of the fund's NAV to its underlying index for a daily series of overlapping 12 month periods. The median is the middle value of the results.

Largest deviation in a positive direction of a fund's returns vs. its underlying index over the past 12 months.

Largest deviation in a negative direction of a fund's returns vs. its underlying index over the past 12 months.

The average capital gains paid out to shareholders in the past 36 months, measured as a percent of net asset value (NAV) at the time.

IRS treatment of the majority of the fund's distributions.

ETFs that are structured as commodities pools and classified as limited partnerships by the IRS will issue K-1 forms to holders.

An indicator of whether a fund uses over-the-counter derivatives such as swaps or forwards to achieve its objectives.

An indicator of whether or not a fund actively lends its portfolio holdings.

The division of securities lending revenue between the fund and the issuer.

The institution responsible for providing the return of the stated index and whose credit is the sole backing of the ETN.

The risk of default by the ETN counterparty.

The likelihood that an issuer will shut down a fund for business or regulatory reasons.

The frequency of an issuer's disclosure of all fund holdings.

The multiple of the underlying index which the fund aims to deliver. For funds that reset, the leverage factor holds true only for the reset period, often just 1 day.

The time period at which the fund “trues up” its leverage factor. For funds that reset, the reset period–often just 1 day–is the length of time over which the fund delivers its leverage factor.

It is the daily dollar value of shares traded, averaged over the past 45 trading days.

Median number of shares traded over the past 45 trading days.

Median dollar value of shares traded over the past 45 trading days.

The difference between the highest price a market participant is willing to pay to buy an ETF and the lowest price at which a market participant is willing to sell an ETF, averaged over the past 60 days, as a percent.

The difference between the highest and lowest posted prices for an ETF, averaged over the past 60 days, in dollars.

The middle value in the ranked set of all premium/discount values over a 12-month period.

The greatest amount that the market price exceeded (premium) and fell below (discount) its fair value/net asset value (NAV) over a 12-month period.

This flags whether there is currently a systemic issue that has restricted the ability to create or redeem shares of the fund. This may be imposed by the fund's issuer, or by external circumstances.

The percent of time that the underlying securities of an ETF are open to trading while US exchanges are open.

The smallest block of ETF shares that an Authorized Participant can either create or redeem at net asset value (NAV) with the issuer in exchange for the underlying shares of the fund.

The median 45 day share volume divided by the creation unit size of the fund. The higher the number, the more likely that liquidity providers will trade the fund in size, or in odd lots.

The standard fee to create or redeem 1 creation unit of an ETF as a percentage of the dollar value of 1 creation unit.

This metric serves as a way of understanding the impact of executing 1 creation unit worth of an ETF in terms of the volume of its underlying components.

The total number of net outstanding options contracts for an ETF.

The total market value of the assets that an ETF holds less fund expenses.

An estimate of liquidity for the underlying baskets of securities, scaled 1 to 5.

The sensitivity of the returns of the fund to the movement of the ETF.com segment benchmark. Beta of 1.0 means magnitude of fund returns equals that of IU benchmark returns.

The excess return of fund relative to ETF.com segment benchmark on a risk adjusted basis. Only reported if statistically significant.

The comparison of a fund's return to our benchmark's for days when the benchmark is up. Ideally down beta is less than up beta while beta of 1.0 means they're equal.

The comparison of a fund's return to our benchmark's for days when the benchmark is down. Ideally down beta is less than up beta while beta of 1.0 means they're equal.

A measure of the variability between the fund's returns and the ETF.com segment benchmark returns on days when the fund underperforms the benchmark.

This is the index that we have chosen as the best-in-class gauge for each segment's broad market.