Fonar Corporation (FONR)
FONR moved a median of 0.00% 30 minutes after news, and -0.05% by the close. How FONR actually reacts to news — the realized, point-in-time move the market made, measured across 137 labeled events over the last three years with zero look-ahead.
FONR’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 24% | 78 |
| 30-min | 0.00% | 34% | 101 |
| 60-min | 0.00% | 39% | 109 |
| to close | -0.05% | 41% | 110 |
| Middle 50% of FONR reactions | -0.12% to +0.05% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 137 |
Half of all Fonar Corporation news events land between -0.12% and +0.05% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when FONR moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to FONR's baseline. Nothing else.
Recent FONR events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G FONAR CORP | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form 8-K FONAR CORP For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form S-8 POS FONAR CORP | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 8-K FONAR CORP For: May 28 | SEC filing · Form 8-K | SEC EDGAR | -0.10% | +0.10% | |
| Form 8-K FONAR CORP For: May 21 | SEC filing · Form 8-K | SEC EDGAR | -0.21% | -0.24% | |
| Form DEFA14A FONAR CORP | SEC filing · Form DEFA14A | SEC EDGAR | -0.21% | -0.24% | |
| Form 8-K FONAR CORP For: May 11 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.05% | |
| Form DEFA14A FONAR CORP | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | -0.05% | |
| Form 10-Q FONAR CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | — | +0.05% | |
| Form ARS FONAR CORP For: Jun 30 | SEC filing · Form ARS | SEC EDGAR | +0.00% | -0.16% | |
| Form DEF 14A FONAR CORP For: May 05 | SEC filing · Form DEF | SEC EDGAR | +0.00% | -0.16% | |
| Form DEFM14A FONAR CORP | SEC filing · Form DEFM14A | SEC EDGAR | -0.05% | +0.05% | |
| Are WBD, FONR, ULY Obtaining Fair Deals for their Shareholders? | Press release | PR Newswire | +0.00% | +0.11% | |
| Are UNF, TALK, FONR Obtaining Fair Deals for their Shareholders? | Press release | PR Newswire | — | +0.30% | |
| Form PRER14A FONAR CORP | SEC filing · Form PRER14A | SEC EDGAR | -0.11% | +0.27% | |
| Are ACLX, MASI, FONR Obtaining Fair Deals for their Shareholders? | Press release | PR Newswire | +0.00% | +0.11% | |
| Are JHG, UDMY, FONR Obtaining Fair Deals for their Shareholders? | Press release | PR Newswire | — | -0.22% | |
| Are WBS, KW, TPH, FONR Obtaining Fair Deals for their Shareholders? | Press release | PR Newswire | +0.00% | -0.05% | |
| Are VRME, ALGT, EWCZ, FONR Obtaining Fair Deals for their Shareholders? | Press release | PR Newswire | +0.00% | +0.00% | |
| Form PREM14A FONAR CORP For: Feb 25 | SEC filing · Form PREM14A | SEC EDGAR | +0.00% | +0.11% | |
| Form 8-K FONAR CORP For: Feb 13 | SEC filing · Form 8-K | SEC EDGAR | -0.05% | -0.11% | |
| Form DEFA14A FONAR CORP | SEC filing · Form DEFA14A | SEC EDGAR | -0.05% | -0.11% | |
| Form 10-Q FONAR CORP For: Dec 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.05% | -0.11% | |
| Form NT 10-Q FONAR CORP For: Dec 31 | SEC filing · Form NT | SEC EDGAR | -0.21% | +0.32% | |
| Halper Sadeh LLC Encourages STEL, BKKT, FONR, CWAN Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | — | +0.05% | |
| Halper Sadeh LLC Encourages FONR, HTBK, DBRG Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | — | -0.03% | |
| Halper Sadeh LLC Encourages NATH, RAPT, FONR Shareholders to Contact the Firm to Discuss Their Rights | Press release | GlobeNewswire | +0.00% | -0.05% | |
| Halper Sadeh LLC Encourages PEN, FONR, GDOT Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | +0.27% | -0.05% | |
| Halper Sadeh LLC Encourages FONR, OCFC, FFIC Shareholders to Contact the Firm to Discuss Their Rights | Press release | GlobeNewswire | +0.00% | +0.48% | |
| Halper Sadeh LLC Encourages VTYX, FONR, SNCY, FFIC Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | +0.00% | -0.05% | |
| Halper Sadeh LLC Encourages FONR, DBRG, ONTF Shareholders to Contact the Firm to Discuss Their Rights | Press release | GlobeNewswire | +0.00% | +0.05% | |
| Form D FONAR, LLC | SEC filing · Form D | SEC EDGAR | +0.00% | +0.00% | |
| Halper Sadeh LLC Encourages CWAN, FFIC, JHG, FONR Shareholders to Contact the Firm to Discuss Their Rights | Press release | GlobeNewswire | +0.00% | -0.05% | |
| FONR Stock Alert: Halper Sadeh LLC is Investigating Whether the Sale of FONAR Corporation is Fair to Shareholders | Press release | Business Wire | +0.34% | -0.59% | |
| Form 8-K FONAR CORP For: Dec 23 | SEC filing · Form 8-K | SEC EDGAR | +0.34% | -0.59% | |
| Form DEFA14A FONAR CORP | SEC filing · Form DEFA14A | SEC EDGAR | +0.34% | -0.59% | |
| Halper Sadeh LLC Encourages FONR, OCFC, FFIC Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | -0.11% | -0.85% | |
| Form 8-K FONAR CORP For: Nov 10 | SEC filing · Form 8-K | SEC EDGAR | — | -0.09% | |
| Form 10-Q FONAR CORP For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | — | -1.83% | |
| Form 10-K FONAR CORP For: Jun 30 | SEC filing · Form 10-K | SEC EDGAR | — | +0.20% | |
| Form 8-K FONAR CORP For: Sep 12 | SEC filing · Form 8-K | SEC EDGAR | -0.57% | -1.15% | |
| Form NT 10-K FONAR CORP For: Sep 12 | SEC filing · Form NT | SEC EDGAR | -0.57% | -1.15% | |
| Form 8-K FONAR CORP For: Jul 18 | SEC filing · Form 8-K | SEC EDGAR | — | -0.56% | |
| Form 8-K/A FONAR CORP For: Jul 09 | SEC filing · Form 8-K | SEC EDGAR | +0.56% | +1.13% | |
| Form 8-K FONAR CORP For: Jul 09 | SEC filing · Form 8-K | SEC EDGAR | +0.56% | +1.13% | |
| Form 8-K FONAR CORP For: Jul 02 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.83% | |
| Form 8-K FONAR CORP For: Jun 23 | SEC filing · Form 8-K | SEC EDGAR | — | -0.52% | |
| Form 8-K FONAR CORP For: Mar 31 | SEC filing · Form 8-K | SEC EDGAR | +1.50% | +3.92% | |
| Form 8-K FONAR CORP For: May 19 | SEC filing · Form 8-K | SEC EDGAR | +0.41% | +1.35% | |
| Form 10-Q FONAR CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | — | -0.57% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the FONR section they belong to.
Where else FONR is measured.
FONR earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| BIOMERIEUX 69 MARCY NEW (BMXMF) | 138 | 0.00% | 23% |
| Kodiak Sciences Inc (KOD) | 138 | +0.09% | 51% |
| Biomerica, Inc. (BMRA) | 135 | 0.00% | 49% |
| BioStem Technologies, Inc. (BSEM) | 135 | +0.30% | 53% |
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.
All Healthcare names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Fonar Corporation's median reaction calculated?
Every labeled FONR 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 137 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. 34% of FONR'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 FONR'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.