Data as of .
REW vs ROM: which held to its multiple?
Over three months against its own daily promise, REW finished 2.6 points over and ROM 1.2 points short.
ETFIQ Decay Resistance Score: ROM scores higher
Did it keep up with its own daily multiple, compounded day by day?
A percentile among the 121 inverse ETFs over three months. It is a position in a set, not a rating, and neither end of it is a recommendation. All leveraged ETFs ranked by it · How it is computed
Performance, window by window
| Window | Total return | Multiple would give | Difference | |||
|---|---|---|---|---|---|---|
| REW | ROM | REW | ROM | REW | ROM | |
| 1 month | +1.2% | −2.0% | +1.3% | −1.3% | −0.1 pts | −0.8 pts |
| 3 months | −7.2% | −0.1% | −3.3% | +3.3% | −3.8 pts | −3.4 pts |
| 6 months | −51.7% | +76.0% | −75.0% | +75.0% | +23.3 pts | +1.0 pts |
| 1 year | −53.9% | +71.2% | −78.4% | +78.4% | +24.5 pts | −7.2 pts |
| 3 years | −84.3% | +247.6% | not meaningful | not meaningful | not meaningful | not meaningful |
| Since launch | −100.0% | +8661.6% | not meaningful | not meaningful | not meaningful | not meaningful |
| REW ProShares UltraShort Technology Aims to return twice the opposite of the daily move of technology (XLK) | ROM ProShares Ultra Technology Aims to return twice the daily move of technology (XLK) | |
|---|---|---|
| Issuer | ProShares | ProShares |
| Sets out to return | -2x | +2x |
| On | XLK | XLK |
| Segment | sector | sector |
| Fund returned, 3 months | −7.2% | −0.1% |
| Underlying returned, 3 months | +1.7% | +1.7% |
| What the stated multiple implies, 3 months | −3.3% | +3.3% |
| Difference from stated, 3 months | −3.8 pts | −3.4 pts |
| Fund returned, 1 year or since launch | −53.9% | +71.2% |
| Difference from stated, over that window | +24.5 pts | −7.2 pts |
| Underlying volatility | 30% | 30% |
| Difference over the days both have traded | no shared window | −3.4 pts |
| Expense ratio | 0.95% | 0.95% |
| Launched | Jan 4, 2010 | Jan 4, 2010 |
REW in plain words
Three months to Sep 11, 2026: REW returned −7.2% where its own daily promise gave −9.8%, 2.6 points over. Read the multiple against the whole window instead and −2 times XLK's 1.7% implies −3.3%, which makes REW look 3.8 points short. 6.4 of that is daily compounding, which happens to any −2 times fund over the same path, and the rest is the fund. REW aims to return -2 times XLK's move each day, then resets. Over one day it does that. Over longer, the daily results compound, so the total is not -2 times the period's move: in a market that falls and comes back it is reliably less, and in a steady run it can be more. XLK moved at 30% annualized over that window. That is what decides how far the two figures separate: the same fund on a calm underlying and a violent one is a different product.
ROM in plain words
Three months to Sep 11, 2026: ROM returned −0.1% where its own daily promise gave +1.1%, 1.2 points short. Read the multiple against the whole window instead and +2 times XLK's 1.7% implies +3.3%, which makes ROM look 3.4 points short. 2.3 of that is daily compounding, which happens to any +2 times fund over the same path, and the rest is the fund. ROM aims to return +2 times XLK's move each day, then resets. Over longer, the daily results compound, so the total is not +2 times the period's move: in a market that falls and comes back it is reliably less, and in a steady run it can be more.
Questions people ask
- Which came closer to its stated multiple, REW or ROM?
- Over the window to Sep 11, 2026, REW finished 3.8 points from what its multiple implies and ROM finished 3.4 points from its own, so ROM came closer. Neither figure predicts the next window: it depends on how much the underlying moves about.
- Are REW and ROM levered on the same thing?
- Yes. Both are levered on technology, REW at -2 times and ROM at +2 times the daily move.
- Which one decays faster, REW or ROM?
- Decay follows how much the underlying moves about. Over this window REW’s moved at 30% annualized and ROM’s at 30%, so REW has the rougher ride and, at the same multiple, loses more to compounding.
- Can I hold REW or ROM for a year?
- Both reset every day, so the multiple in the name applies to a single day and the daily results compound. Over a year the total is not the multiple times the year’s move, and in a market that falls and comes back it is reliably less. ETFIQ makes no recommendation either way.
- Which is cheaper, REW or ROM?
- REW charges 0.95% a year and ROM charges 0.95%, so REW is cheaper. Fees come from each fund's prospectus.
Other comparisons
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, REW against ROM, data as of Sep 11, 2026. https://etfiq.com/compare/leverage/REW-ROM Free to use with attribution; the underlying files are at Open data.