ProShares - UltraShort 20+ Year Treasury (TBT) 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 - UltraShort 20+ Year Treasury (TBT) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $296.9M, listed on AMEX, carrying a beta of -4.74 to the broader market. ProShares UltraShort 20+ Year Treasury seeks daily investment results, before fees and expenses, that correspond to two times the inverse (-2x) of the daily performance of the ICE U. public since 2008-05-22.
Snapshot as of May 15, 2026.
- Spot Price
- $37.46
- Expected Move
- 6.4%
- Implied High
- $39.85
- Implied Low
- $35.07
- Front DTE
- 34 days
As of May 15, 2026, ProShares - UltraShort 20+ Year Treasury (TBT) has an expected move of 6.39%, a one-standard-deviation implied price range of roughly $35.07 to $39.85 from the current $37.46. 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.
TBT Strategy Sizing to the Expected Move
With ProShares - UltraShort 20+ Year Treasury pricing an expected move of 6.39% from $37.46, 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 TBT derived from ATM implied volatility at each listed expiration. Implied high/low bounds are computed as $37.46 × (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 | 22.3% | 6.8% | $40.01 | $34.91 |
| Jul 17, 2026 | 63 | 22.9% | 9.5% | $41.02 | $33.90 |
| Sep 18, 2026 | 126 | 23.8% | 14.0% | $42.70 | $32.22 |
| Dec 18, 2026 | 217 | 23.9% | 18.4% | $44.36 | $30.56 |
| Jan 15, 2027 | 245 | 24.2% | 19.8% | $44.89 | $30.03 |
| Jan 21, 2028 | 616 | 24.1% | 31.3% | $49.19 | $25.73 |
Frequently asked TBT expected move questions
- What is the current TBT expected move?
- As of May 15, 2026, ProShares - UltraShort 20+ Year Treasury (TBT) has an expected move of 6.39% over the next 34 days, implying a one-standard-deviation price range of $35.07 to $39.85 from the current $37.46. The expected move is derived from at-the-money straddle pricing and represents the market consensus for a ±1σ price move.
- What does the TBT 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 TBT 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.