Rating reiterations across 3,515 names
Rating reiterations were measured across 3,515 names over the last three years; 45% of them have a positive median reaction at 30 minutes. An analyst restates an existing rating. The highest-volume, lowest-information analyst event — the baseline.
Rating reiterations do not move one way.
Across hundreds of events per name, median reactions sit near zero — reiterations are mostly noise, which is exactly what a base-rate should show.
Across all 3,515 measured names, 45% have a positive median 30-minute reaction and 249 have a median of exactly 0.00%. No single median is published for the class: with the names split that evenly, the middle of that distribution is zero, and it is zero on all six of these pages.
The strongest and weakest reactions to rating reiterations, among the 1,504 best-measured names.
Strongest median 30-min reaction
| Ticker | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| AI | 107 | +0.93% | 65% | +1.02% |
| ZVRA | 80 | +0.89% | 73% | +0.80% |
| SFIX | 79 | +0.81% | 66% | +0.63% |
| NKTX | 55 | +0.76% | 55% | -0.43% |
| ZBIO | 50 | +0.76% | 72% | +0.64% |
| ANAB | 93 | +0.74% | 63% | +0.12% |
| VIAV | 82 | +0.73% | 66% | +0.10% |
| RNAC | 78 | +0.67% | 60% | +0.04% |
| ACHR | 81 | +0.66% | 68% | +1.05% |
| MGNX | 51 | +0.65% | 59% | -0.28% |
| EYPT | 65 | +0.60% | 65% | +0.16% |
| ABSI | 67 | +0.53% | 55% | -0.54% |
Weakest median 30-min reaction
| Ticker | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| OTLK | 52 | -2.65% | 33% | -1.77% |
| MRNS | 50 | -1.32% | 30% | -0.53% |
| PHVS | 50 | -1.23% | 28% | -1.57% |
| NVTS | 65 | -1.19% | 37% | -1.20% |
| AMBA | 92 | -1.19% | 28% | -1.58% |
| CTMX | 51 | -1.18% | 35% | -2.99% |
| CLNN | 93 | -1.14% | 29% | -2.50% |
| TYRA | 61 | -0.99% | 34% | -0.51% |
| STOK | 83 | -0.92% | 46% | -0.63% |
| CAN | 73 | -0.90% | 36% | -1.04% |
| ALLO | 58 | -0.89% | 36% | -0.45% |
| SLDB | 75 | -0.88% | 24% | -0.98% |
Last 3 years, pulled 2026-08-31. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. Both tables rank only the 1,504 names with at least 50 measured rating reiterations; the full population publishes every name with at least 10, where a handful of events can put a name at either extreme.
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All six event types, side by side →
Other event types: Analyst upgrades → · Analyst downgrades → · Coverage initiations → · Price-target raises → · Price-target cuts → · Every measured ticker →