Bluejay Diagnostics, Inc. (BJDX)
BJDX moved a median of -0.11% 30 minutes after news, and -1.00% by the close. How BJDX actually reacts to news — the realized, point-in-time move the market made, measured across 161 labeled events over the last three years with zero look-ahead.
BJDX’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 41% | 153 |
| 30-min | -0.11% | 43% | 159 |
| 60-min | -0.71% | 40% | 160 |
| to close | -1.00% | 44% | 160 |
| Middle 50% of BJDX reactions | -3.03% to +1.46% |
|---|---|
| Median reaction (30-min) | -0.11% |
| Measured reactions | 161 |
Half of all Bluejay Diagnostics, Inc. news events land between -3.03% and +1.46% 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 BJDX moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to BJDX's baseline. Nothing else.
Recent BJDX events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Bluejay Achieves Toray Contractual Manufacturing Milestone, Advancing Supply-Chain Resilience and Commercialization Readiness | Press release | ACCESS Newswire | +0.00% | +3.26% | |
| Form 8-K Bluejay Diagnostics, For: Oct 13 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +3.26% | |
| Bluejay Diagnostics Announces SYMON-II Clinical Dataset Details Supporting Evaluation of Mortality Risk in Sepsis and Septic Shock | Press release | ACCESS Newswire | -1.80% | +2.92% | |
| Form 8-K Bluejay Diagnostics, For: Oct 06 | SEC filing · Form 8-K | SEC EDGAR | -1.80% | +2.92% | |
| Bluejay Diagnostics and Lovell Government Services Announce Partnership to Expand Access to U.S. Federal Healthcare Markets | Press release | GlobeNewswire | -2.91% | +0.00% | |
| Form 8-K Bluejay Diagnostics, For: Sep 01 | SEC filing · Form 8-K | SEC EDGAR | -1.94% | -1.94% | |
| Bluejay Diagnostics Reports Q2 2026 Results; Strengthened Balance Sheet Supports Advancement of Symphony™ IL-6 Toward Regulatory Submission and Commercialization | Press release | GlobeNewswire | +2.50% | +6.00% | |
| Form 8-K Bluejay Diagnostics, For: Aug 13 | SEC filing · Form 8-K | SEC EDGAR | +2.50% | +6.00% | |
| Form 10-Q Bluejay Diagnostics, For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.50% | +6.00% | |
| Form S-8 Bluejay Diagnostics, | SEC filing · Form S-8 | SEC EDGAR | +2.50% | +6.00% | |
| Form 8-K Bluejay Diagnostics, For: Jul 21 | SEC filing · Form 8-K | SEC EDGAR | -2.56% | -0.87% | |
| Bluejay Diagnostics Announces Successful Completion of Enrollment in the SYMON-II Multicenter Clinical Validation Study | Press release | GlobeNewswire | +0.87% | +0.87% | |
| Form EFFECT Bluejay Diagnostics, | SEC filing · Form EFFECT | SEC EDGAR | -5.16% | -50.52% | |
| Form S-3 Bluejay Diagnostics, | SEC filing · Form S-3 | SEC EDGAR | -0.11% | -0.45% | |
| Form 8-K Bluejay Diagnostics, For: Jun 09 | SEC filing · Form 8-K | SEC EDGAR | -0.86% | -3.65% | |
| Form 8-K Bluejay Diagnostics, For: Jun 02 | SEC filing · Form 8-K | SEC EDGAR | -9.66% | -19.50% | |
| Bluejay Diagnostics Announces Closing of Up to $23.7 Million Private Placement Priced At-The-Market Under Nasdaq Rules | Press release | GlobeNewswire | +4.13% | +8.06% | |
| Bluejay Diagnostics and Argonaut Manufacturing Services Announce Strategic Partnership | Press release | GlobeNewswire | +9.28% | -29.32% | |
| Bluejay Diagnostics Announces up to $23.6 Million Private Placement Priced At-the-Market Under Nasdaq Rules | Press release | GlobeNewswire | -10.74% | -15.60% | |
| Form 8-K Bluejay Diagnostics, For: May 27 | SEC filing · Form 8-K | SEC EDGAR | +9.28% | -29.32% | |
| Bluejay Diagnostics Provides First Quarter 2026 Corporate Update | Press release | GlobeNewswire | +0.00% | -4.97% | |
| Form 10-Q Bluejay Diagnostics, For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -4.97% | |
| Form 8-K Bluejay Diagnostics, For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -4.97% | |
| Form DEF 14A Bluejay Diagnostics, For: Jun 09 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +0.52% | |
| Form PRE 14A Bluejay Diagnostics, For: Apr 20 | SEC filing · Form PRE | SEC EDGAR | -0.51% | -2.04% | |
| Bluejay Diagnostics, Inc. Announces Completion of 624 Patient Enrollments in SYMON-II Pivotal Clinical Trial | Press release | GlobeNewswire | +0.00% | +1.49% | |
| Form 8-K Bluejay Diagnostics, For: Apr 07 | SEC filing · Form 8-K | SEC EDGAR | — | +0.49% | |
| Form 8-K Bluejay Diagnostics, For: Mar 14 | SEC filing · Form 8-K | SEC EDGAR | — | -1.07% | |
| Form 8-K Bluejay Diagnostics, For: Mar 13 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +2.09% | |
| Bluejay Announces Abstract Accepted for Presentation at the 2026 Society of Academic Emergency Medicine (SAEM) Annual Meeting | Press release | GlobeNewswire | -0.49% | -1.98% | |
| Form 8-K Bluejay Diagnostics, For: Mar 12 | SEC filing · Form 8-K | SEC EDGAR | — | -0.75% | |
| Bluejay Diagnostics Provides Corporate Update and 2026 Strategic Outlook | Press release | GlobeNewswire | +0.00% | -2.10% | |
| Form 10-K Bluejay Diagnostics, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.54% | +1.08% | |
| Form 8-K Bluejay Diagnostics, For: Mar 06 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -2.10% | |
| Bluejay Diagnostics Announces All Prefunded Warrants Now Exercised | Press release | GlobeNewswire | +2.35% | +0.50% | |
| Form 8-K Bluejay Diagnostics, For: Feb 20 | SEC filing · Form 8-K | SEC EDGAR | +4.07% | -3.35% | |
| Form 8-K Bluejay Diagnostics, For: Feb 17 | SEC filing · Form 8-K | SEC EDGAR | +0.37% | -5.60% | |
| Bluejay Diagnostics Successfully Enrolls 545 Patients in SYMON™ II Study and Advances Manufacturing Readiness into 2026 | Press release | GlobeNewswire | +3.92% | +0.37% | |
| Form 8-K Bluejay Diagnostics, For: Jan 27 | SEC filing · Form 8-K | SEC EDGAR | -3.01% | +9.04% | |
| Bluejay Diagnostics Announces 1-for-4 Reverse Stock Split | Press release | GlobeNewswire | +1.37% | +4.07% | |
| Form 8-K Bluejay Diagnostics, For: Dec 29 | SEC filing · Form 8-K | SEC EDGAR | -4.41% | +7.06% | |
| Bluejay Diagnostics Announces Completion of Commercial-Scale IL-6 Antibody Production | Press release | GlobeNewswire | -5.87% | -4.37% | |
| Form EFFECT Bluejay Diagnostics, | SEC filing · Form EFFECT | SEC EDGAR | -0.30% | -10.35% | |
| Bluejay Diagnostics Corporate Update: Advancing Clinical Milestones and Strategic Partnerships | Press release | GlobeNewswire | +1.11% | +0.64% | |
| Form 8-K Bluejay Diagnostics, For: Nov 10 | SEC filing · Form 8-K | SEC EDGAR | +3.26% | +13.07% | |
| Form 10-Q Bluejay Diagnostics, For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.11% | +0.64% | |
| Form S-3 Bluejay Diagnostics, | SEC filing · Form S-3 | SEC EDGAR | +1.28% | -1.28% | |
| Form 8-K Bluejay Diagnostics, For: Oct 09 | SEC filing · Form 8-K | SEC EDGAR | -3.28% | +14.75% | |
| Bluejay Diagnostics Announces Closing of $4.5 Million Private Placement Priced At-The-Market Under Nasdaq Rules | Press release | GlobeNewswire | +0.00% | -0.35% | |
| Bluejay Diagnostics and SanyoSeiko Expand Strategic Partnership to Advance Commercialization of Symphony Platform | Press release | GlobeNewswire | +6.60% | -13.46% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the BJDX section they belong to.
Where else BJDX is measured.
BJDX earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Bluejay Diagnostics, Inc.'s median reaction calculated?
Every labeled BJDX 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 161 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. 43% of BJDX'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 BJDX'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.