SparksOdds · Research
Daily Market Report
Sep 21, 2026
Data windowSep 21, 2026 00:00 → Sep 22, 2026 00:00 UTC
GeneratedSep 22, 2026 00:03 UTC
Market snapshot
- Sparks analyzed
- 489
- Events represented
- 33
- Books represented
- 30
- Leagues represented
- 2
Largest price gaps
| Match | League | Book | Gap | Action | Persisted |
|---|---|---|---|---|---|
| Arsenal vs Leeds United | EPL | Hard Rock Bet | +29.68% | PASS | 10h |
| Arsenal vs Leeds United | EPL | Hard Rock Bet | +29.34% | PASS | 10h 35m |
| Arsenal vs Leeds United | EPL | BetRivers | +23.79% | PASS | 10h |
| Arsenal vs Leeds United | EPL | Bally Bet | +23.79% | PASS | 10h |
| Arsenal vs Leeds United | EPL | Bally Bet | +23.46% | PASS | 10h 35m |
| Arsenal vs Leeds United | EPL | BetRivers | +23.46% | PASS | 10h 35m |
| Arsenal vs Leeds United | EPL | Betway | -18.98% | PASS | 6h 59m |
| Manchester City vs Ipswich Town | EPL | Sky Bet | -18.73% | PASS | 1h |
| Manchester City vs Ipswich Town | EPL | PlayNow (CA) | -18.63% | PASS | 1h |
| Manchester City vs Ipswich Town | EPL | FanDuel | -18.60% | PASS | 1h |
Most persistent signals
| Match | League | Persisted | Gap |
|---|---|---|---|
| Coventry City vs Newcastle United | EPL | 33h 38m | +0.91% |
| Crystal Palace vs Nottingham Forest | EPL | 33h 38m | -15.41% |
| Liverpool vs Manchester City | EPL | 28h | +3.75% |
| Coventry City vs Newcastle United | EPL | 26h 38m | +0.91% |
| Crystal Palace vs Nottingham Forest | EPL | 26h 38m | -15.40% |
| Liverpool vs Manchester City | EPL | 21h | -0.71% |
| Coventry City vs Newcastle United | EPL | 19h 38m | +0.93% |
| Crystal Palace vs Nottingham Forest | EPL | 19h 38m | -15.43% |
| Manchester United vs Tottenham Hotspur | EPL | 19h | -6.74% |
| Coventry City vs Newcastle United | EPL | 18h 38m | +0.93% |
Market dispersion
| League | Sport | Markets | Mean gap | Gap std dev | Dispersion |
|---|---|---|---|---|---|
| EPL | soccer | 327 | -5.20% | +6.04% | High |
| La Liga - Spain | soccer | 162 | -5.71% | +3.47% | Moderate |
What stood out
Largest gap: Arsenal vs Leeds United (EPL) at 29.7% vs fair price. Most active league: EPL (327 Sparks). Longest-lived Spark persisted about 2018 minutes. Highest gap dispersion: EPL.
Deterministic summary · template-v1
Methodology
- Report window
- Sep 21, 2026 00:00 → Sep 22, 2026 00:00 UTC
- Gap formula
- gap_pct = (price_at_spark ÷ fair_price − 1) × 100
- Persistence
- Time between the first and last observation of the same Spark.
- Dispersion
- Cross-sectional standard deviation of gap_pct across distinct markets in the same league. It is not time-series volatility.
- Publication thresholds
- At least 10 Sparks, 3 distinct events, and 3 distinct books, with an untruncated scan.
- Generation timestamp
- Sep 22, 2026 00:03 UTC