Summit Materials, Inc. Class A (SUM) by event type
SUM moves most on rating reiterations — a median of +0.11% at 30 minutes across 41 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the SUM overview →
How SUM reacts across 5 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades 1,135 of 2,717 | 12 | +0.08% | 50% | -0.01% |
| Analyst downgrades 1,295 of 2,603 | 27 | 0.00% | 37% | +0.10% |
| Coverage initiations 914 of 2,283 | 12 | +0.09% | 75% | -0.05% |
| Rating reiterations 776 of 3,522 | 41 | +0.11% | 56% | +0.11% |
| Price-target raises 1,215 of 1,790 | 14 | -0.07% | 43% | -0.10% |
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. 1 further class was observed with fewer than 10 measured events and is not published.
That’s how SUM usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst upgrades → · Analyst downgrades → · Coverage initiations → · Rating reiterations → · Price-target raises → · SUM overview →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Masco Corporation (MAS) | 280 | +0.16% | 58% |
| SOUTH32 LTD SPNS/ADR (SOUHY) | 280 | 0.00% | 49% |
| Mosaic Company (The) (MOS) | 275 | +0.07% | 59% |
| Ur Energy Inc Common Shares (Canada) (URG) | 275 | -0.54% | 38% |
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.