Richardson Electronics, Ltd. (RELL)
RELL moved a median of -0.07% 30 minutes after news, and -0.20% by the close. How RELL actually reacts to news — the realized, point-in-time move the market made, measured across 244 labeled events over the last three years with zero look-ahead.
RELL’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.02% | 36% | 204 |
| 30-min | -0.07% | 42% | 235 |
| 60-min | 0.00% | 47% | 243 |
| to close | -0.20% | 45% | 242 |
| Middle 50% of RELL reactions | -0.77% to +0.62% |
|---|---|
| Median reaction (30-min) | -0.07% |
| Measured reactions | 244 |
Half of all Richardson Electronics, Ltd. news events land between -0.77% and +0.62% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How RELL reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 14 | +0.08% | 57% | -0.13% |
| Analyst downgrades | 12 | +0.39% | 67% | +0.84% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 2 further classes were observed with fewer than 10 measured events and are not published. See how RELL ranks against every other measured name →
That’s how RELL usually reacts — get an email when it moves on news →Email me when RELL moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to RELL's baseline. Nothing else.
Recent RELL events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 10-Q RICHARDSON ELECTRONICS, For: Aug 29 | SEC filing · Form 10-Q | SEC EDGAR | +0.12% | -1.75% | |
| Form 8-K/A RICHARDSON ELECTRONICS, For: Oct 07 | SEC filing · Form 8-K | SEC EDGAR | +0.08% | +0.83% | |
| Form 8-K RICHARDSON ELECTRONICS, For: Oct 07 | SEC filing · Form 8-K | SEC EDGAR | +0.70% | -0.70% | |
| Richardson Electronics Reports Strong First Quarter Results; Declares Quarterly Cash Dividend | Press release | GlobeNewswire | +0.70% | -0.70% | |
| Richardson Electronics Announces Date of First Quarter Fiscal Year 2027 Conference Call | Press release | GlobeNewswire | +0.00% | +4.27% | |
| Richardson Electronics, Ltd. to Participate in the Lytham Partners Fall 2026 Investor Conference | Press release | GlobeNewswire | -0.56% | +1.56% | |
| Form ARS RICHARDSON ELECTRONICS, For: May 30 | SEC filing · Form ARS | SEC EDGAR | +0.03% | +0.53% | |
| Form DEF 14A RICHARDSON ELECTRONICS, For: Oct 06 | SEC filing · Form DEF | SEC EDGAR | -0.29% | +0.23% | |
| Form DEFA14A RICHARDSON ELECTRONICS, | SEC filing · Form DEFA14A | SEC EDGAR | +0.03% | +0.53% | |
| Richardson Electronics, Ltd. to Deliver Energy Storage Solutions to Remote Alaska Communities | Press release | GlobeNewswire | +0.79% | -1.71% | |
| Richardson Electronics to Present at the 17th Annual Midwest IDEAS Investor Conference on August 26th | Press release | GlobeNewswire | +0.15% | +0.64% | |
| Richardson Electronics, Ltd. Expands Its Energy Storage Portfolio with RESS211 and RESS422 Commercial Battery Energy Storage Systems | Press release | GlobeNewswire | +0.25% | +6.74% | |
| Form 10-K RICHARDSON ELECTRONICS, For: May 30 | SEC filing · Form 10-K | SEC EDGAR | +0.79% | +3.80% | |
| Form 8-K RICHARDSON ELECTRONICS, For: Jul 22 | SEC filing · Form 8-K | SEC EDGAR | -0.80% | +3.02% | |
| Richardson Electronics Reports Strong Fourth Quarter and Fiscal 2026 Results; Declares Quarterly Cash Dividend | Press release | GlobeNewswire | -0.80% | +3.02% | |
| Richardson Electronics Announces Date of Fourth Quarter Fiscal Year 2026 Conference Call | Press release | GlobeNewswire | +0.00% | -1.30% | |
| Richardson Electronics, Ltd. Selected to Manufacture Power Supply for C-Motive's New ZeroMag® Electrostatic Motor | Press release | GlobeNewswire | +0.46% | +2.06% | |
| Richardson Electronics Announces Strategic Technology Partnership with NoMIS Power to Advance Silicon Carbide Solutions | Press release | GlobeNewswire | +2.33% | +5.15% | |
| Form SD RICHARDSON ELECTRONICS, | SEC filing · Form SD | SEC EDGAR | +0.91% | -0.73% | |
| Richardson Electronics, Ltd. Announces Technology Partnership with Gotion to Deliver U.S.-Manufactured Battery Energy Storage Systems | Press release | GlobeNewswire | +1.10% | +6.24% | |
| Richardson Electronics to Present at the 16th Annual LD Micro Invitational on May 18, 2026 | Press release | GlobeNewswire | -0.13% | -0.39% | |
| Canvys Expands 4K Display Platform for Medical Applications with New 32-Inch Monitor | Press release | GlobeNewswire | +0.23% | -1.23% | |
| Richardson Electronics Expands Availability of LaserSlat SAVER™ to Brazil, Enhancing Laser Cutting Efficiency Across Latin America | Press release | GlobeNewswire | -0.47% | -0.14% | |
| Form 10-Q RICHARDSON ELECTRONICS, For: Feb 28 | SEC filing · Form 10-Q | SEC EDGAR | -0.42% | +1.83% | |
| Form 8-K RICHARDSON ELECTRONICS, For: Apr 08 | SEC filing · Form 8-K | SEC EDGAR | -4.41% | +6.89% | |
| Richardson Electronics Reports Third Quarter Results; Declares Quarterly Cash Dividend | Press release | GlobeNewswire | -4.41% | +6.89% | |
| Richardson Electronics Announces Date of Third Quarter Fiscal Year 2026 Conference Call | Press release | GlobeNewswire | +0.37% | +2.30% | |
| Richardson Electronics Launches LaserSlat SAVER™ to Reduce Downtime and Extend Laser Cutting Table Life | Press release | GlobeNewswire | +0.48% | -1.82% | |
| Richardson Electronics, Ltd. Strengthens RF & Microwave Product Portfolio with Nxbeam Technology Partnership | Press release | GlobeNewswire | +0.66% | +12.04% | |
| Richardson Electronics’ Canvys Division Appoints Rainer Bornwasser as VP of Global Sales | Press release | GlobeNewswire | +0.01% | -0.59% | |
| Form 10-Q RICHARDSON ELECTRONICS, For: Nov 29 | SEC filing · Form 10-Q | SEC EDGAR | -0.13% | -1.09% | |
| Form 8-K RICHARDSON ELECTRONICS, For: Jan 07 | SEC filing · Form 8-K | SEC EDGAR | -3.04% | -2.09% | |
| Richardson Electronics Reports Second Quarter Results; Declares Quarterly Cash Dividend | Press release | GlobeNewswire | -3.04% | -2.09% | |
| Richardson Electronics Announces Date of Second Quarter Fiscal Year 2026 Conference Call | Press release | GlobeNewswire | — | -1.27% | |
| Richardson Electronics, Ltd. to Attend Benchmark 14th Annual Discovery One-on-One Investor Conference | Press release | GlobeNewswire | — | +2.42% | |
| Richardson Electronics to Present at the 17th Annual Southwest IDEAS Investor Conference on November 19th | Press release | GlobeNewswire | -0.68% | +1.08% | |
| Form S-8 RICHARDSON ELECTRONICS, | SEC filing · Form S-8 | SEC EDGAR | -0.26% | -0.37% | |
| Form 10-Q RICHARDSON ELECTRONICS, For: Aug 30 | SEC filing · Form 10-Q | SEC EDGAR | — | -0.17% | |
| Form 8-K RICHARDSON ELECTRONICS, For: Oct 08 | SEC filing · Form 8-K | SEC EDGAR | +7.32% | -3.58% | |
| Richardson Electronics Reports First Quarter Results; Declares Quarterly Cash Dividend | Press release | GlobeNewswire | +7.32% | -3.58% | |
| Richardson Electronics Announces Date of First Quarter Fiscal Year 2026 Conference Call | Press release | GlobeNewswire | +0.00% | -1.14% | |
| Richardson Electronics Appoints Daniel Albers to Drive Made-in-USA Contract Manufacturing Expansion | Press release | GlobeNewswire | — | +2.40% | |
| Richardson Electronics to Attend the Sidoti Small-Cap Virtual Conference | Press release | GlobeNewswire | — | -0.52% | |
| Form ARS RICHARDSON ELECTRONICS, For: May 31 | SEC filing · Form ARS | SEC EDGAR | -0.31% | -2.68% | |
| Form DEF 14A RICHARDSON ELECTRONICS, For: Oct 07 | SEC filing · Form DEF | SEC EDGAR | — | -2.68% | |
| Form DEFA14A RICHARDSON ELECTRONICS, | SEC filing · Form DEFA14A | SEC EDGAR | -0.31% | -2.68% | |
| Governor Pritzker Announces Illinois Manufacturer Richardson Electronics, Ltd. to Expand Operations in Kane County, Produce Battery Energy Storage Systems | Press release | GlobeNewswire | +0.00% | -0.51% | |
| Form PRE 14A RICHARDSON ELECTRONICS, For: Oct 07 | SEC filing · Form PRE | SEC EDGAR | +0.00% | -4.24% | |
| Form 10-K RICHARDSON ELECTRONICS, For: May 31 | SEC filing · Form 10-K | SEC EDGAR | — | +0.41% | |
| Driving Growth: Richardson Electronics, Ltd. Joins Forces with KEBA Industrial Automation GmbH to Deliver Pitch Control Systems Across North America | Press release | GlobeNewswire | — | — |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the RELL section they belong to.
Where else RELL is measured.
RELL earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| CARBON BLACK (CBLK) | 244 | +0.03% | 51% |
| JETPAY CORP COMMON (JTPY) | 244 | 0.00% | 36% |
| ShotSpotter, Inc. (SSTI) | 244 | 0.00% | 47% |
| Tower Semiconductor Ltd. - Ordinary Shares (TSEM) | 244 | +0.10% | 51% |
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.
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Every name we’ve measured, in one place.
How the numbers are made.
How is Richardson Electronics, Ltd.'s median reaction calculated?
Every labeled RELL news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 244 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 42% of RELL's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does RELL's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.