It is an inverse leveraged ETF that aims to track -2x the daily return of Ether. It does not hold Ether directly. Instead, it builds opposite-direction exposure through derivatives such as futures and swaps.

It suits investors who fully understand derivative and leveraged structures and want to trade a decline in Ether in the short term or hedge existing crypto asset exposure.

It is an actively managed ETF run by ProShares.

Using derivatives such as futures and swaps, the fund seeks twice the opposite-direction exposure to the daily moves of Ether's price. Because the objective is set on a daily basis, exposure is reset every day. If the holding period extends beyond one day, the compounding effect can cause cumulative performance to differ significantly from a simple -2x.

• Inverse leveraged exposure to declines in Ether
• Implemented through derivatives without holding the spot asset

Assets under management (AUM) are $54.9M, and the total expense ratio is 0.95% per year.

Compared with SETH, an inverse -1x product, it carries a larger exposure multiple, and volatility and compounding distortion are correspondingly greater.

Because it has an opposite-direction structure that loses when Ether rises and gains when Ether falls, its recent return pattern moves against the direction of the underlying asset. Given the daily reset, decay unrelated to direction can appear during highly volatile periods.

Fund flows tend to come and go mainly from short-term traders, depending on crypto market volatility and directional outlook. Interest grows when demand for bearish bets rises, but the flows show a character closer to short-term trading than long-term holding.

While it offers the chance to earn amplified returns during Ether downturns, compounding distortion from leverage and the daily reset, along with high volatility, are the key risks.

Several products appear in the table as comparison targets in the same crypto inverse category. They include SETH, which has -1x exposure to Ether declines, a lower multiple and milder volatility; BITI, which bets on Bitcoin declines at -1x; SBIT, which has -2x exposure to Bitcoin declines; and BTCZ, which has a similar inverse leveraged structure. Choices can be divided by underlying asset and multiple.

Here are the points to review before investing in ETHD. With inverse leveraged products, you need to understand not only your directional view but also the volatility structure that results from the holding period and the daily reset.

If Ether rises, losses are magnified twofold. If you hold through highly volatile stretches for a long time, compounding distortion can produce results different from what you expected even when your directional call is right. The inherent risk of the leveraged and inverse structure is significant.

This is an inverse leveraged ETF used as a short-term tactical tool against Ether declines. If the multiple feels too burdensome, you can also consider SETH with -1x exposure, or BITI and SBIT if you are targeting a Bitcoin decline.