ProShares - Short MidCap400 (MYY) 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 MidCap400 (MYY) operates in the Financial Services sector, specifically the Asset Management - Leveraged industry, with a market capitalization near $2.7M, listed on AMEX, carrying a beta of -1.05 to the broader market. ProShares Short MidCap400 seeks daily investment results, before fees and expenses, that correspond to the inverse (-1x) of the daily performance of the S&P MidCap 400. public since 2006-06-21.
Snapshot as of May 15, 2026.
- Spot Price
- $16.05
- Expected Move
- 16.7%
- Implied High
- $18.72
- Implied Low
- $13.38
- Front DTE
- 34 days
As of May 15, 2026, ProShares - Short MidCap400 (MYY) has an expected move of 16.66%, a one-standard-deviation implied price range of roughly $13.38 to $18.72 from the current $16.05. 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.
MYY Strategy Sizing to the Expected Move
With ProShares - Short MidCap400 pricing an expected move of 16.66% from $16.05, 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 MYY derived from ATM implied volatility at each listed expiration. Implied high/low bounds are computed as $16.05 × (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 | 58.1% | 17.7% | $18.90 | $13.20 |
| Jul 17, 2026 | 63 | 55.8% | 23.2% | $19.77 | $12.33 |
| Sep 18, 2026 | 126 | 50.0% | 29.4% | $20.77 | $11.33 |
| Dec 18, 2026 | 217 | 46.9% | 36.2% | $21.85 | $10.25 |
Frequently asked MYY expected move questions
- What is the current MYY expected move?
- As of May 15, 2026, ProShares - Short MidCap400 (MYY) has an expected move of 16.66% over the next 34 days, implying a one-standard-deviation price range of $13.38 to $18.72 from the current $16.05. The expected move is derived from at-the-money straddle pricing and represents the market consensus for a ±1σ price move.
- What does the MYY 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 MYY 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.