# SCO (ProShares UltraShort Bloomberg Crude Oil)

ProShares · Leveraged ETFs · data as of Sep 11, 2026

Three months to Sep 11, 2026: SCO returned −26.5% where its own daily promise gave −28.1%, 1.6 points over.

## Key facts

- SCO, what OILK did: +12.8%, as of Sep 11, 2026.
- SCO, what −2 times a day gives: −28.1%, as of Sep 11, 2026.
- SCO, what the fund returned: −26.5%, as of Sep 11, 2026.
- SCO, the fund itself added: +1.6 pts, as of Sep 11, 2026.
- SCO, expense ratio: not read by ETFIQ, as of Sep 11, 2026.
- SCO, underlying: OILK, as of Sep 11, 2026.

## SCO over each window to Sep 11, 2026

| Window | Fund | OILK | -2x the move | Difference | OILK moved about |
| --- | --- | --- | --- | --- | --- |
| 1 month | −20.4% | +11.6% | −23.2% | +2.8 pts | 24% |
| 3 months | −26.5% | +12.8% | −25.6% | −0.9 pts | 34% |
| 6 months | −39.5% | +17.7% | −35.5% | −4.0 pts | 35% |
| 1 year | −70.6% | +62.2% | −124.4% | +53.9 pts | 31% |
| 3 years | −69.2% | +44.3% | −88.6% | +19.4 pts | 27% |
| Since launch | −99.4% | +55.6% | −111.2% | +11.8 pts | 36% |

## Every published field

| Field | Value | Source |
| --- | --- | --- |
| Sets out to return | -2 times the daily move of OILK, reset daily | ETFIQ |
| Multiple a holder actually got over the window | -2.07 times, against -2 stated | ETFIQ |
| Underlying | OILK | ETFIQ |
| Segment | asset class, commodity | ETFIQ |
| Expense ratio | not read by ETFIQ | ETFIQ |
| Launched | Jan 4, 2010 | ETFIQ |
| Underlying volatility over the window | 34% annualized | ETFIQ |

## Questions

### Did SCO return -2 times OILK?

Over the window to Sep 11, 2026, OILK moved +12.8% and SCO returned −26.5%. 2 times that move is −25.6%, so the fund came out 0.9 points short of it.

### Why does SCO not return -2 times over a year?

Because it resets daily. SCO aims at -2 times each day's move, and daily results compound. Over a run where the underlying falls and comes back, compounding a levered daily return leaves a holder behind what -2 times the period move would suggest; over a steady run in one direction it can leave them ahead. The longer the holding, and the more the underlying moves about, the further apart the two figures get.


## Cite this page

ETFIQ, SCO, data as of Sep 11, 2026. https://etfiq.com/funds/SCO
Free to use with attribution; the underlying files are at https://etfiq.com/data/.

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