ProShares - Short S&P500 (SH) Expected Move
Expected move estimates the probable price range for a given period based on at-the-money options pricing. It reflects the market consensus for volatility over the selected timeframe.
ProShares - Short S&P500 (SH) operates in the Financial Services sector, specifically the Asset Management - Leveraged industry, with a market capitalization near $1.14B, listed on AMEX, carrying a beta of -0.96 to the broader market. ProShares Short S&P500 seeks daily investment results, before fees and expenses, that correspond to the inverse (-1x) of the daily performance of the S&P 500. public since 2006-06-21.
Snapshot as of May 15, 2026.
- Spot Price
- $33.53
- Expected Move
- 4.9%
- Implied High
- $35.16
- Implied Low
- $31.90
- Front DTE
- 34 days
As of May 15, 2026, ProShares - Short S&P500 (SH) has an expected move of 4.87%, a one-standard-deviation implied price range of roughly $31.90 to $35.16 from the current $33.53. Expected move is derived from at-the-money straddle pricing and represents the market's pricing of a ±1σ move. Roughly 68% of outcomes should fall within this range under lognormal assumptions, though empirical markets have fatter tails.
SH Strategy Sizing to the Expected Move
With ProShares - Short S&P500 pricing an expected move of 4.87% from $33.53, risk-defined strategies sized to the implied range structurally target the modal outcome distribution. Iron condors with wings at the ±1σ expected move boundaries collect premium against the ~68% probability that spot stays inside the range under lognormal assumptions; strangles set wider at ±1.5σ or ±2σ target the tails but pay smaller per-trade premium. Long-vol structures (long straddles, ratio backspreads) profit when realized move exceeds the implied move, the inverse trade: they bet against the lognormal assumption itself, capitalizing on the empirically fatter equity-return tails.
Learn how expected move is reported and how to read the data →
Per-expiration expected move for SH derived from ATM implied volatility at each listed expiration. Implied high/low bounds are computed as $33.53 × (1 ± expected move %). One standard-deviation range under lognormal assumptions, roughly 68% of outcomes fall inside.
| Expiration | DTE | ATM IV | Expected Move | Implied High | Implied Low |
|---|---|---|---|---|---|
| Jun 18, 2026 | 34 | 17.0% | 5.2% | $35.27 | $31.79 |
| Jul 17, 2026 | 63 | 17.9% | 7.4% | $36.02 | $31.04 |
| Aug 21, 2026 | 98 | 17.6% | 9.1% | $36.59 | $30.47 |
| Nov 20, 2026 | 189 | 18.2% | 13.1% | $37.92 | $29.14 |
| Jan 15, 2027 | 245 | 20.3% | 16.6% | $39.11 | $27.95 |
| Jan 21, 2028 | 616 | 20.5% | 26.6% | $42.46 | $24.60 |
Frequently asked SH expected move questions
- What is the current SH expected move?
- As of May 15, 2026, ProShares - Short S&P500 (SH) has an expected move of 4.87% over the next 34 days, implying a one-standard-deviation price range of $31.90 to $35.16 from the current $33.53. The expected move is derived from at-the-money straddle pricing and represents the market consensus for a ±1σ price move.
- What does the SH expected move mean for traders?
- Roughly 68% of outcomes should fall within ±1 expected move and 95% within ±2 under lognormal assumptions, though equity returns have empirically fatter tails than log-normal predicts. Strategies sized to the expected move (iron condors at ±1σ, strangles at ±1.5σ) target the typical outcome distribution; strategies that profit from tail moves (long-vol structures, ratio backspreads) target the tails the lognormal model under-prices.
- How is SH expected move calculated?
- The expected move displayed here is derived from at-the-money implied volatility scaled to the chosen tenor: expected move % is approximately ATM IV times sqrt(T / 365), where T is days to expiration. An equivalent straddle-based form: the ATM straddle (call + put at the same strike) is roughly sqrt(2/pi) times spot times IV times sqrt(T/365), so the implied one-standard-deviation move is approximately 1.25 times ATM straddle divided by spot. The two formulations agree once the sqrt(2/pi) constant is reconciled.