Bio-Rad Laboratories, Inc. Class A (BIO) by event type
BIO moves most on analyst downgrades — a median of +1.20% at 30 minutes across 16 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the BIO overview →
How BIO reacts across 4 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades 1,111 of 2,717 | 17 | +0.09% | 53% | -0.25% |
| Analyst downgrades 80 of 2,603 | 16 | +1.20% | 63% | +0.88% |
| Rating reiterations 481 of 3,522 | 29 | +0.19% | 62% | +0.17% |
| Price-target raises 231 of 1,790 | 10 | +0.19% | 80% | +0.55% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The rank under each event type orders every name measured for it by median 30-min reaction, most positive first — so a low rank on a downgrade means this name falls harder than most, not that it moves less. Names with an identical median share a rank; a name the cross-section does not carry shows no rank rather than a guessed one. 2 further classes were observed with fewer than 10 measured events and are not published.
That’s how BIO usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst upgrades → · Analyst downgrades → · Rating reiterations → · Price-target raises → · BIO overview →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Omeros Corporation (OMER) | 232 | +0.49% | 57% |
| SANUWAVE Health, Inc. (SNWV) | 232 | 0.00% | 49% |
| Cronos Group Inc. - Common Share (CRON) | 230 | +0.27% | 62% |
| Forward Pharma A/S - American Depositary Shares (FWP) | 230 | 0.00% | 37% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.