Data as of .
REK vs SRS: which held to its multiple?
Over three months against its own daily promise, REK finished 2.2 points over and SRS 3.5 points over.
ETFIQ Decay Resistance Score: SRS 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 | |||
|---|---|---|---|---|---|---|
| REK | SRS | REK | SRS | REK | SRS | |
| 1 month | +2.9% | +5.6% | +2.7% | +5.3% | +0.2 pts | +0.3 pts |
| 3 months | +4.8% | +8.1% | +3.0% | +6.0% | +1.8 pts | +2.1 pts |
| 6 months | −2.2% | −6.7% | −4.1% | −8.3% | +2.0 pts | +1.5 pts |
| 1 year | −0.7% | −6.1% | −4.7% | −9.5% | +4.0 pts | +3.3 pts |
| 3 years | −11.5% | −34.6% | −29.0% | −58.1% | +17.6 pts | +23.4 pts |
| Since launch | −80.7% | −98.6% | not meaningful | not meaningful | not meaningful | not meaningful |
| REK ProShares Short Real Estate Aims to return 1 times the opposite of the daily move of ISHARES U.S. REAL ESTATE ETF (IYR) | SRS ProShares UltraShort Real Estate Aims to return twice the opposite of the daily move of ISHARES U.S. REAL ESTATE ETF (IYR) | |
|---|---|---|
| Issuer | ProShares | ProShares |
| Sets out to return | -1x | -2x |
| On | IYR | IYR |
| Segment | sector | sector |
| Fund returned, 3 months | +4.8% | +8.1% |
| Underlying returned, 3 months | −3.0% | −3.0% |
| What the stated multiple implies, 3 months | +3.0% | +6.0% |
| Difference from stated, 3 months | +1.8 pts | +2.1 pts |
| Fund returned, 1 year or since launch | −0.7% | −6.1% |
| Difference from stated, over that window | +4.0 pts | +3.3 pts |
| Underlying volatility | 14% | 14% |
| Expense ratio | not published | 0.95% |
| Launched | Mar 18, 2010 | Jan 4, 2010 |
REK in plain words
Three months to Sep 11, 2026: REK returned +4.8% where its own daily promise gave +2.5%, 2.2 points over. Read the multiple against the whole window instead and −1 times IYR's −3.0% implies +3.0%, which makes REK look 1.8 points over. 0.4 of that is daily compounding, which happens to any −1 times fund over the same path, and the rest is the fund. REK aims to return -1 times IYR's move each day, then resets. Over one day it does that. Over longer, the daily results compound, so the total is not -1 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. IYR moved at 14% 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.
SRS in plain words
Three months to Sep 11, 2026: SRS returned +8.1% where its own daily promise gave +4.6%, 3.5 points over. Read the multiple against the whole window instead and −2 times IYR's −3.0% implies +6.0%, which makes SRS look 2.1 points over. 1.4 of that is daily compounding, which happens to any −2 times fund over the same path, and the rest is the fund. SRS aims to return -2 times IYR'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, REK or SRS?
- Over the window to Sep 11, 2026, REK finished 1.8 points from what its multiple implies and SRS finished 2.1 points from its own, so REK came closer. Neither figure predicts the next window: it depends on how much the underlying moves about.
- Are REK and SRS levered on the same thing?
- Yes. Both are levered on ISHARES U.S. REAL ESTATE ETF, REK at -1 times and SRS at -2 times the daily move.
- Which one decays faster, REK or SRS?
- Decay follows how much the underlying moves about. Over this window REK’s moved at 14% annualized and SRS’s at 14%, so REK has the rougher ride and, at the same multiple, loses more to compounding.
- Can I hold REK or SRS 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.
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, REK against SRS, data as of Sep 11, 2026. https://etfiq.com/compare/leverage/REK-SRS Free to use with attribution; the underlying files are at Open data.