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
$0.93
7-Day Straddle
$1.10
Avg IV
2.5%
IV Rank
35%
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 |
|---|---|---|---|---|
| 20260807 | $0.93 | $1.10 | 2.5% | 35% |
| 20260806 | $3.00 | $5.00 | 1.9% | 23% |
| 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% |
| 20260625 | $0.65 | $0.65 | 2.3% | 62% |
| 20260624 | $0.57 | $0.57 | 2.1% | 53% |
| 20260623 | $0.62 | $0.62 | 2.2% | 58% |
| 20260622 | $0.72 | $0.72 | 2.1% | 54% |
| 20260618 | $0.57 | $0.43 | 1.7% | 40% |
| 20260617 | $0.83 | $0.43 | 2.1% | 55% |
| 20260616 | $0.85 | $0.30 | 1.6% | 36% |
| 20260615 | $0.88 | $0.50 | 1.7% | 37% |
| 20260613 | $0.95 | $0.60 | 2.0% | 51% |
| 20260612 | $0.95 | $0.60 | 2.1% | 53% |
| 20260611 | $1.00 | $0.53 | 2.0% | 49% |
| 20260610 | $0.75 | $0.45 | 1.9% | 45% |
| 20260609 | $0.75 | $0.60 | 1.7% | 39% |
| 20260608 | $0.82 | $0.62 | 2.0% | 48% |
| 20260605 | $0.98 | $0.65 | 1.7% | 38% |
| 20260604 | $1.02 | $0.60 | 1.8% | 44% |
| 20260603 | $0.85 | $0.73 | 1.4% | 33% |
| 20260602 | $0.60 | $0.60 | 1.9% | 49% |
| 20260601 | $0.78 | $0.78 | 2.3% | 64% |
| 20260529 | $0.77 | $0.77 | 1.8% | 47% |
| 20260528 | $0.75 | $0.75 | 1.2% | 22% |
| 20260527 | $0.78 | $0.78 | 1.8% | 46% |
| 20260526 | $0.73 | $0.73 | 1.9% | 49% |
| 20260510 | $0.65 | $0.53 | 1.6% | 40% |
| 20260508 | $0.65 | $0.53 | 1.6% | 39% |
| 20260507 | $2.67 | $7.65 | 1.2% | 23% |
| 20260506 | $2.73 | $2.60 | 1.4% | 32% |
| 20260505 | $0.75 | $2.62 | 1.6% | 38% |
| 20260504 | $2.67 | $0.52 | 1.2% | 25% |
| 20260502 | $0.47 | $0.47 | 2.0% | 52% |
| 20260501 | $0.28 | $0.28 | 1.9% | 50% |