Mini-SPX Index (XSP) 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.
Snapshot as of Jul 15, 2026.
- Spot Price
- $756.57
- Expected Move
- 3.7%
- Implied High
- $784.33
- Implied Low
- $728.81
- Front DTE
- 30 days
As of Jul 15, 2026, Mini-SPX Index (XSP) has an expected move of 3.67%, a one-standard-deviation implied price range of roughly $728.81 to $784.33 from the current $756.57. 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.
XSP Strategy Sizing to the Expected Move
With Mini-SPX Index pricing an expected move of 3.67% from $756.57, 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.
How to read the XSP implied-range chart
The shaded range above shows the one-standard-deviation implied price band at each listed expiration, derived from ATM implied volatility scaled to days-to-expiration. The front-tenor expected move is 3.67%, anchoring an implied range of approximately $728.81 to $784.33. Under lognormal assumptions, roughly 68% of outcomes fall inside that band; 95% fall inside ±2σ; 99.7% inside ±3σ. The empirical equity-return distribution has fatter tails than lognormal, so true tail-outcome frequency is moderately higher than these closed-form numbers suggest.
XSP expected move and event pricing
Expected move widens with √time: a 5% 30-day move corresponds to roughly a 2.5% 7.5-day move and a 10% 120-day move. XSP term-structure is in contango (slope 0.002), so longer-dated tenors price in proportionally more vol than √time scaling alone would suggest - typically because long-dated cycles include uncertain macro states. With IV rank at 14.5%, the implied move is at the low end of the typical XSP range - cheap optionality for buyers, thin premium for sellers.
Sizing XSP structures to the expected move
Iron condors with wings at ±1σ collect the modal-outcome premium; ±1.5σ widens probability of inside-range to ~87% but cuts collected premium roughly in half. Strangles do the inverse trade - they pay against the same lognormal distribution, profiting when realized exceeds implied. Calendar spreads bet on the slope of the term structure rather than the level. XSP put/call volume ratio currently at 1.19 indicates balanced flow without strong directional skew. The expected move is the inputs the chain is pricing, not a forecast - realized moves above or below are normal under any distribution.
Learn how expected move is reported and how to read the data →
Per-expiration expected move for XSP derived from ATM implied volatility at each listed expiration. Implied high/low bounds are computed as $756.57 × (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 |
|---|---|---|---|---|---|
| Jul 16, 2026 | 1 | 10.4% | 0.5% | $760.69 | $752.45 |
| Jul 17, 2026 | 2 | 10.7% | 0.8% | $762.56 | $750.58 |
| Jul 20, 2026 | 5 | 8.6% | 1.0% | $764.19 | $748.95 |
| Jul 21, 2026 | 6 | 9.0% | 1.2% | $765.30 | $747.84 |
| Jul 22, 2026 | 7 | 9.4% | 1.3% | $766.42 | $746.72 |
| Jul 23, 2026 | 8 | 10.1% | 1.5% | $767.88 | $745.26 |
| Jul 24, 2026 | 9 | 10.5% | 1.6% | $769.04 | $744.10 |
| Jul 27, 2026 | 12 | 10.0% | 1.8% | $770.29 | $742.85 |
| Jul 28, 2026 | 13 | 10.3% | 1.9% | $771.28 | $741.86 |
| Jul 29, 2026 | 14 | 10.9% | 2.1% | $772.72 | $740.42 |
| Jul 30, 2026 | 15 | 11.6% | 2.4% | $774.36 | $738.78 |
| Jul 31, 2026 | 16 | 12.1% | 2.5% | $775.74 | $737.40 |
| Aug 3, 2026 | 19 | 11.7% | 2.7% | $776.77 | $736.37 |
| Aug 4, 2026 | 20 | 11.9% | 2.8% | $777.64 | $735.50 |
| Aug 5, 2026 | 21 | 12.1% | 2.9% | $778.53 | $734.61 |
| Aug 6, 2026 | 22 | 12.2% | 3.0% | $779.23 | $733.91 |
| Aug 7, 2026 | 23 | 12.5% | 3.1% | $780.31 | $732.83 |
| Aug 10, 2026 | 26 | 12.2% | 3.3% | $781.20 | $731.94 |
| Aug 11, 2026 | 27 | 12.3% | 3.3% | $781.88 | $731.26 |
| Aug 12, 2026 | 28 | 12.8% | 3.5% | $783.39 | $729.75 |
| Aug 13, 2026 | 29 | 12.9% | 3.6% | $784.08 | $729.06 |
| Aug 14, 2026 | 30 | 12.8% | 3.7% | $784.33 | $728.81 |
| Aug 21, 2026 | 37 | 13.0% | 4.1% | $787.88 | $725.26 |
| Aug 28, 2026 | 44 | 13.4% | 4.7% | $791.77 | $721.37 |
| Aug 31, 2026 | 47 | 13.3% | 4.8% | $792.68 | $720.46 |
| Sep 4, 2026 | 51 | 13.7% | 5.1% | $795.31 | $717.83 |
| Sep 18, 2026 | 65 | 14.0% | 5.9% | $801.27 | $711.87 |
| Sep 30, 2026 | 77 | 14.2% | 6.5% | $805.91 | $707.23 |
| Oct 16, 2026 | 93 | 14.8% | 7.5% | $813.09 | $700.05 |
| Oct 30, 2026 | 107 | 15.2% | 8.2% | $818.83 | $694.31 |
| Nov 20, 2026 | 128 | 15.6% | 9.2% | $826.46 | $686.68 |
| Nov 30, 2026 | 138 | 15.5% | 9.5% | $828.68 | $684.46 |
| Dec 18, 2026 | 156 | 15.7% | 10.3% | $834.22 | $678.92 |
| Dec 31, 2026 | 169 | 16.0% | 10.9% | $838.94 | $674.20 |
| Jan 15, 2027 | 184 | 16.1% | 11.4% | $843.05 | $670.09 |
| Feb 19, 2027 | 219 | 16.5% | 12.8% | $853.27 | $659.87 |
| Mar 19, 2027 | 247 | 17.0% | 14.0% | $862.37 | $650.77 |
| Apr 16, 2027 | 275 | 17.3% | 15.0% | $870.18 | $642.96 |
| May 21, 2027 | 310 | 17.7% | 16.3% | $879.98 | $633.16 |
| Jun 17, 2027 | 337 | 18.1% | 17.4% | $888.15 | $624.99 |
| Jul 16, 2027 | 366 | 18.2% | 18.2% | $894.45 | $618.69 |
| Sep 17, 2027 | 429 | 18.5% | 20.1% | $908.31 | $604.83 |
| Dec 17, 2027 | 520 | 18.9% | 22.6% | $927.24 | $585.90 |
| Dec 15, 2028 | 884 | 19.8% | 30.8% | $989.70 | $523.44 |
XSP highest implied-volatility contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $757.00 | Jul 16, 2026 | 1.1K | 100 | 10.4% | $1.43 | $1.47 |
Top 1 contracts from the institutional-grade nightly options scan; ranked by iv within the broader S&P 500/400/600 + ETF universe.
Frequently asked XSP expected move questions
- What is the current XSP expected move?
- As of Jul 15, 2026, Mini-SPX Index (XSP) has an expected move of 3.67% over the next 30 days, implying a one-standard-deviation price range of $728.81 to $784.33 from the current $756.57. The expected move is derived from at-the-money straddle pricing and represents the market consensus for a ±1σ price move.
- What does the XSP 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 XSP 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.