CBRS
Cerebras Systems Inc. · Technology · Semiconductors
$139.03
-1.73% today · -17.20% 1W
Oct 15 close or latest
ReadoutWhy it's moving
Moving with its group (SMH -2.0%)
- CBRS −1.73% on the last session vs SPY +0.02%: −1.8 pts of stock-specific move.
- The semiconductor ETF (SMH) -2.0% (-2.1 pts vs SPY): the stock moved with its group.
- 4 Reddit mentions in the past 24 hours, 64% positive over the week.
- 4 insider or congressional trades in the past 30 days.
- Market backdrop (Today): Core PPI m/m 1.3% vs 0.3% expected (hotter); Core Retail Sales m/m 0.9% vs 0.6% expected (stronger); S&P futures -0.08%, 10-year yield -3bp in the 30 minutes after.
Assembled from Wallsti's own signals.
Best and worst times to own CBRS in the past two years
Buying and selling at the close. Each colored stretch is the best or worst window for that holding period, green for a gain and red for a loss: longer holds are wider and darker underneath, shorter ones brighter on top. The grey line is the full two years. Letters mark events inside the windows (E earnings, A analyst, I insider, M mention spike, V volume spike, T theme move, N news). Hover a period above the chart to pick it out and see only its events; click it to hide or show it.
Best and worst window per holding period
| Best | Worst | |||||||
|---|---|---|---|---|---|---|---|---|
| Hold for | Buy | Sell | Gain | Rank | Buy | Sell | Gain | Rank |
| one single day | Jul 29, 2026 | Jul 30, 2026 | +19.9% | #34 | Jun 23, 2026 | Jun 24, 2026 | -19.6% | #24 |
| one week | Jul 29, 2026 | Aug 5, 2026 | +26.5% | #59 | Jun 18, 2026 | Jun 25, 2026 | -28.2% | #20 |
| one month | Jul 17, 2026 | Aug 17, 2026 | +45.8% | #50 | May 22, 2026 | Jun 25, 2026 | -34.4% | #32 |
| 3 months | Jun 25, 2026 | Sep 25, 2026 | +22.7% | #375 | May 14, 2026 | Jul 29, 2026 | -45.5% | #13 |
| 6 months | May 14, 2026 | Aug 12, 2026 | -15.8% | #501 | May 14, 2026 | Oct 15, 2026 | -55.3% | #8 |
| one year | May 14, 2026 | Aug 12, 2026 | -15.8% | #494 | May 14, 2026 | Oct 15, 2026 | -55.3% | #23 |
Rank #59 for the best one week means 58 of the S&P 500 components had a better best-one week gain over the past year; for the worst windows #1 is the deepest fall. Updated .
What happened in each window
Best one single day Jul 29, 2026 → Jul 30, 2026 +19.9% · 0 events
None recorded.
Best one week Jul 29, 2026 → Aug 5, 2026 +26.5% · 0 events
None recorded.
Best one month Jul 17, 2026 → Aug 17, 2026 +45.8% · 2 events
- E Earnings beat 2Q2026 · EPS +$0.13 (+74.6%) vs consensus · -11.8% reaction
- M Mention spike 95 mentions vs 1.6/day the week before
Best 3 months Jun 25, 2026 → Sep 25, 2026 +22.7% · 6 events
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $6,116,197
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $5,936,180
- E Earnings beat 2Q2026 · EPS +$0.13 (+74.6%) vs consensus · -11.8% reaction
- M Mention spike 95 mentions vs 1.6/day the week before
- I Unplanned insider sale Steven Vassallo (Director), $10,909,101
- I Unplanned insider sale Steven Vassallo (Director), $10,515,135
Best 6 months May 14, 2026 → Aug 12, 2026 -15.8% · 5 events
- M Mention spike 45 mentions vs 1.7/day the week before
- E Earnings beat 1Q2026 · EPS +$0.11 (+74.0%) vs consensus · -19.6% reaction
- V Volume spike 3.8x average volume, -19.6% on the day
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $6,116,197
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $5,936,180
Best one year May 14, 2026 → Aug 12, 2026 -15.8% · 5 events
- M Mention spike 45 mentions vs 1.7/day the week before
- E Earnings beat 1Q2026 · EPS +$0.11 (+74.0%) vs consensus · -19.6% reaction
- V Volume spike 3.8x average volume, -19.6% on the day
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $6,116,197
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $5,936,180
Worst one single day Jun 23, 2026 → Jun 24, 2026 -19.6% · 3 events
- M Mention spike 45 mentions vs 1.7/day the week before
- E Earnings beat 1Q2026 · EPS +$0.11 (+74.0%) vs consensus · -19.6% reaction
- V Volume spike 3.8x average volume, -19.6% on the day
Worst one week Jun 18, 2026 → Jun 25, 2026 -28.2% · 3 events
- M Mention spike 45 mentions vs 1.7/day the week before
- E Earnings beat 1Q2026 · EPS +$0.11 (+74.0%) vs consensus · -19.6% reaction
- V Volume spike 3.8x average volume, -19.6% on the day
Worst one month May 22, 2026 → Jun 25, 2026 -34.4% · 3 events
- M Mention spike 45 mentions vs 1.7/day the week before
- E Earnings beat 1Q2026 · EPS +$0.11 (+74.0%) vs consensus · -19.6% reaction
- V Volume spike 3.8x average volume, -19.6% on the day
Worst 3 months May 14, 2026 → Jul 29, 2026 -45.5% · 5 events
- M Mention spike 45 mentions vs 1.7/day the week before
- E Earnings beat 1Q2026 · EPS +$0.11 (+74.0%) vs consensus · -19.6% reaction
- V Volume spike 3.8x average volume, -19.6% on the day
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $6,116,197
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $5,936,180
Worst 6 months May 14, 2026 → Oct 15, 2026 -55.3% · 10 events
- M Mention spike 45 mentions vs 1.7/day the week before
- E Earnings beat 1Q2026 · EPS +$0.11 (+74.0%) vs consensus · -19.6% reaction
- V Volume spike 3.8x average volume, -19.6% on the day
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $6,116,197
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $5,936,180
- E Earnings beat 2Q2026 · EPS +$0.13 (+74.6%) vs consensus · -11.8% reaction
- M Mention spike 95 mentions vs 1.6/day the week before
- I Unplanned insider sale Steven Vassallo (Director), $10,909,101
- I Unplanned insider sale Steven Vassallo (Director), $10,515,135
- A Analyst upgrade Freedom Capital Markets: Hold → Buy
Worst one year May 14, 2026 → Oct 15, 2026 -55.3% · 10 events
- M Mention spike 45 mentions vs 1.7/day the week before
- E Earnings beat 1Q2026 · EPS +$0.11 (+74.0%) vs consensus · -19.6% reaction
- V Volume spike 3.8x average volume, -19.6% on the day
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $6,116,197
- I Unplanned insider sale Dhiraj Mallick (Chief Operating Officer), $5,936,180
- E Earnings beat 2Q2026 · EPS +$0.13 (+74.6%) vs consensus · -11.8% reaction
- M Mention spike 95 mentions vs 1.6/day the week before
- I Unplanned insider sale Steven Vassallo (Director), $10,909,101
- I Unplanned insider sale Steven Vassallo (Director), $10,515,135
- A Analyst upgrade Freedom Capital Markets: Hold → Buy
From Wallsti's event record (Aftermath's events over the two years, plus the AI-read news catalysts, which only cover recent weeks). An event is no proof of cause: check the dates against the line.
Today vs. the best starting days
| As of | 1d | 1w | 1m | 3m | 6m | 1y |
|---|---|---|---|---|---|---|
| Today Oct 15, 2026 |
-1.7% | -17.2% | -24.5% | -24.4% | -55.3% | -55.3% |
| Best one single day Jul 29, 2026 |
-12.1% | -19.3% | -21.6% | -45.5% | -45.5% | -45.5% |
| Best one week Jul 29, 2026 |
-12.1% | -19.3% | -21.6% | -45.5% | -45.5% | -45.5% |
| Best one month Jul 17, 2026 |
-4.2% | -19.6% | -19.1% | -44.4% | -44.4% | -44.4% |
| Best 3 months Jun 25, 2026 |
-7.5% | -28.2% | -34.4% | -45.8% | -45.8% | -45.8% |
| Best 6 months May 14, 2026 |
0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
| Best one year May 14, 2026 |
0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
Trailing gains over each window, today and on the day each best window started, to compare today's setup with the best entries.