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
$0.78
7-Day Straddle
$0.38
Avg IV
2.0%
IV Rank
51%
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 |
|---|---|---|---|---|
| 20260617 | $0.78 | $0.38 | 2.0% | 51% |
| 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% |
| 20260430 | $0.28 | $0.28 | 1.8% | 47% |
| 20260429 | $0.60 | $0.60 | 1.6% | 40% |
| 20260428 | $15.00 | $15.00 | 1.9% | 49% |
| 20260427 | $5.00 | $5.00 | 1.4% | 33% |
| 20260424 | $8.00 | $8.00 | 1.3% | 27% |
| 20260423 | $0.57 | $0.57 | 1.3% | 29% |
| 20260422 | $0.50 | $0.50 | 1.5% | 34% |
| 20260421 | $8.00 | $8.00 | 1.6% | 41% |
| 20260420 | $3.05 | $3.05 | 1.6% | 41% |
| 20260417 | $0.38 | $0.47 | 1.2% | 25% |
| 20260416 | $0.42 | $0.20 | 1.4% | 33% |
| 20260415 | $8.10 | $0.35 | 1.4% | 32% |
| 20260414 | $0.55 | $0.25 | 1.1% | 20% |
| 20260413 | $0.55 | $0.50 | 1.3% | 27% |
| 20260410 | $0.38 | $0.28 | 0.7% | 7% |
| 20260409 | $0.60 | $0.35 | 1.4% | 32% |
| 20260408 | $0.55 | $0.35 | 1.7% | 43% |
| 20260407 | $0.68 | $0.35 | 1.6% | 40% |
| 20260406 | $0.55 | $0.40 | 1.8% | 46% |
| 20260402 | $7.97 | $0.40 | 1.6% | 40% |
| 20260401 | $0.45 | $0.45 | 3.1% | 92% |
| 20260331 | $0.35 | $0.35 | 3.1% | 95% |
| 20260330 | $0.65 | $0.65 | 3.3% | 100% |
| 20260327 | $0.38 | $0.38 | 3.0% | 99% |
| 20260326 | $0.57 | $0.57 | 3.0% | 100% |
| 20260325 | $0.45 | $0.45 | 2.6% | 93% |
| 20260324 | $0.55 | $0.55 | 2.5% | 90% |
| 20260323 | $0.48 | $0.48 | 2.8% | 100% |
| 20260320 | $0.55 | $0.23 | 2.6% | 98% |
| 20260319 | $0.50 | $0.35 | 2.5% | 91% |
| 20260318 | $0.53 | $0.38 | 2.5% | 94% |
| 20260317 | $0.55 | $0.45 | 2.1% | 74% |
| 20260316 | $0.50 | $0.42 | 2.2% | 77% |
| 20260313 | $1.88 | $7.80 | 2.1% | 73% |