SPRO (Spero Therapeutics, Inc. Common Stock)
Expected Move & Straddle Price History
The expected move for SPRO is derived from at-the-money straddle pricing — the market's implied one-standard-deviation move through the next 30 days. Comparing it to realized moves reveals when options are pricing in too much (premium-selling regime) vs too little (premium-buying regime).
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
Current SPRO Expected Move
30-Day Straddle
$0.57
7-Day Straddle
$0.57
Avg IV
4.9%
IV Rank
80%
Implied one-standard-deviation move through the next 30 days. Compare to SPRO's realized
move over the same window to gauge whether options are pricing in too much (premium-selling regime)
or too little (premium-buying regime). The
Expected Move Tracker ranks every symbol by
this measure.
SPRO Straddle Price — Last 60 Days
| Date | 30D Straddle | 7D Straddle | Avg IV | IV Rank |
|---|---|---|---|---|
| 20260923 | $0.57 | $0.57 | 4.9% | 80% |
| 20260922 | $0.53 | $0.53 | 4.3% | 68% |
| 20260921 | $2.70 | $2.70 | 5.0% | 83% |
| 20260918 | $2.70 | $2.75 | 4.7% | 77% |
| 20260917 | $0.35 | $7.75 | 5.0% | 82% |
| 20260916 | $0.38 | $2.75 | 4.5% | 73% |
| 20260915 | $2.88 | $0.47 | 4.1% | 64% |
| 20260914 | $7.70 | $7.75 | 4.7% | 76% |
| 20260911 | $2.70 | $2.75 | 4.3% | 68% |
| 20260910 | $2.88 | $2.75 | 4.4% | 70% |
| 20260909 | $3.00 | $2.75 | 4.7% | 77% |
| 20260908 | $15.00 | $0.30 | 4.7% | 76% |
| 20260904 | $15.00 | $0.30 | 3.8% | 56% |
| 20260903 | $5.00 | $2.75 | 4.0% | 62% |
| 20260902 | $2.75 | $2.75 | 3.0% | 41% |
| 20260901 | $7.75 | $7.75 | 1.7% | 19% |
| 20260831 | $2.75 | $2.75 | 2.9% | 42% |
| 20260828 | $5.00 | $5.00 | 1.5% | 15% |
| 20260827 | $0.33 | $0.33 | 2.3% | 31% |
| 20260826 | $2.75 | $2.75 | 2.2% | 30% |
| 20260825 | $0.40 | $0.40 | 2.2% | 29% |
| 20260824 | $2.75 | $2.75 | 1.9% | 23% |
| 20260821 | $7.75 | $7.72 | 2.0% | 25% |
| 20260820 | $2.75 | $0.53 | 2.5% | 35% |
| 20260819 | $0.53 | $0.53 | 2.6% | 37% |
| 20260818 | $2.58 | $5.00 | 2.1% | 26% |
| 20260817 | $2.90 | $8.00 | 2.5% | 35% |
| 20260814 | $0.65 | $0.88 | 2.4% | 33% |
| 20260813 | $0.90 | $0.80 | 2.5% | 35% |
| 20260812 | $0.60 | $0.53 | 1.9% | 23% |
| 20260811 | $0.60 | $1.00 | 2.1% | 26% |
| 20260810 | $3.00 | $0.57 | 1.8% | 21% |
| 20260806 | $2.60 | $5.00 | 1.5% | 15% |
| 20260805 | $1.00 | $1.00 | 4.0% | 65% |
| 20260804 | $1.07 | $1.07 | 3.9% | 63% |
| 20260803 | $8.70 | $8.70 | 5.8% | 100% |
| 20260731 | $3.80 | $3.80 | 5.4% | 100% |
| 20260730 | $8.80 | $8.80 | 3.8% | 70% |
| 20260729 | $8.43 | $8.43 | 4.9% | 95% |
| 20260728 | $1.18 | $1.18 | 5.2% | 100% |
| 20260727 | $1.25 | $1.25 | 4.7% | 100% |
| 20260724 | $1.27 | $1.27 | 4.5% | 100% |
| 20260723 | $8.80 | $8.80 | 4.4% | 100% |
| 20260722 | $1.23 | $1.23 | 4.4% | 100% |
| 20260721 | $1.18 | $1.18 | 4.0% | 100% |
| 20260720 | $3.55 | $3.55 | 3.6% | 100% |
| 20260716 | $0.75 | $0.95 | 3.3% | 100% |
| 20260715 | $0.73 | $0.85 | 3.0% | 88% |
| 20260714 | $0.57 | $0.75 | 2.9% | 87% |
| 20260713 | $0.62 | $0.45 | 2.0% | 49% |
| 20260710 | $0.95 | $0.45 | 1.3% | 21% |
| 20260709 | $8.20 | $0.42 | 1.9% | 47% |
| 20260708 | $0.62 | $0.47 | 1.9% | 44% |
| 20260707 | $0.82 | $0.45 | 2.0% | 52% |
| 20260706 | $0.88 | $0.45 | 1.9% | 47% |
| 20260702 | $0.38 | $0.38 | 1.5% | 28% |
| 20260701 | $0.45 | $0.45 | 2.3% | 63% |
| 20260630 | $0.45 | $0.45 | 2.1% | 55% |
| 20260629 | $0.52 | $0.52 | 2.2% | 59% |
| 20260626 | $0.50 | $0.50 | 2.5% | 69% |