# PST (ProShares UltraShort 7-10 Year Treasury)

ProShares · Leveraged ETFs · data as of Sep 30, 2026

Three months to Sep 30, 2026: PST returned +11.4% where its own daily promise gave +9.1%, 2.3 points over.

## Key facts

- PST, what IEF did: −4.3%, as of Sep 30, 2026.
- PST, what −2 times a day gives: +9.1%, as of Sep 30, 2026.
- PST, what the fund returned: +11.4%, as of Sep 30, 2026.
- PST, the fund itself added: +2.3 pts, as of Sep 30, 2026.
- PST, net assets: $11m (issuer page, as of Sep 30, 2026).
- PST, expense ratio: 0.95% (485BPOS XBRL, Sep 25, 2026).

## PST over each window to Sep 30, 2026

| Window | Fund | IEF | -2x the move | Difference | IEF moved about |
| --- | --- | --- | --- | --- | --- |
| 1 month | +7.7% | −3.4% | +6.7% | +1.0 pts | 6% |
| 3 months | +11.4% | −4.3% | +8.7% | +2.7 pts | 5% |
| 6 months | +13.9% | −4.4% | +8.8% | +5.1 pts | 5% |
| 1 year | +17.5% | −3.7% | +7.5% | +10.0 pts | 5% |
| 3 years | +13.5% | +8.9% | −17.9% | +31.4 pts | 6% |
| Since launch | −45.2% | +47.1% | −94.2% | +49.1 pts | 7% |

## Every published field

| Field | Value | Source |
| --- | --- | --- |
| Sets out to return | -2 times the daily move of IEF, reset daily | ETFIQ |
| Multiple a holder actually got over the window | IEF moved −4.3% over this window, too little to read a multiple from | ETFIQ |
| Underlying | IEF | ETFIQ |
| Segment | asset class, bond | ETFIQ |
| Net assets | $11m | issuer page, as of Sep 30, 2026 |
| Expense ratio | 0.95% | 485BPOS XBRL, Sep 25, 2026 |
| Launched | Jan 4, 2010 | ETFIQ |
| Underlying volatility over the window | 5% annualized | ETFIQ |

## Questions

### Did PST return -2 times IEF?

Over the window to Sep 30, 2026, IEF moved −4.3% and PST returned +11.4%. −2 times that move is +8.7%, so the fund came out 2.7 points ahead of it.

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

Because it resets daily. PST 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, PST, data as of Sep 30, 2026. https://etfiq.com/funds/pst
Free to use with attribution; the underlying files are at https://etfiq.com/data/.

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