Aptorum Group Limited - Class A Ordinary Shares (APM)
APM moved a median of -0.25% 30 minutes after news, and +1.09% by the close. How APM actually reacts to news — the realized, point-in-time move the market made, measured across 79 labeled events over the last three years with zero look-ahead.
APM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 30% | 67 |
| 30-min | -0.25% | 36% | 72 |
| 60-min | +0.43% | 55% | 76 |
| to close | +1.09% | 56% | 79 |
| Middle 50% of APM reactions | -3.18% to +2.70% |
|---|---|
| Median reaction (30-min) | -0.25% |
| Measured reactions | 79 |
Half of all Aptorum Group Limited - Class A Ordinary Shares news events land between -3.18% and +2.70% 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 APM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to APM's baseline. Nothing else.
Recent APM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Aptorum Group Provides Update on DiamiR Biosciences Merger | Press release | GlobeNewswire | -1.00% | -16.41% | |
| Aptorum Group and DiamiR Biosciences Announce Three Presentations at 2026 Alzheimer’s Association International Conference | Press release | GlobeNewswire | — | +0.30% | |
| Aptorum Group Announces Collaboration between DiamiR Biosciences and AlzLabs Precision Diagnostics for Alzheimer’s Disease Biomarkers | Press release | GlobeNewswire | -3.59% | -0.37% | |
| Form 6-K/A Aptorum Group Ltd For: Jun 22 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -3.46% | |
| Aptorum Group Announces Shareholder Approval of Proposed Merger with DiamiR Biosciences | Press release | GlobeNewswire | -3.85% | -13.10% | |
| Form 6-K Aptorum Group Ltd For: Jun 10 | SEC filing · Form 6-K | SEC EDGAR | -3.85% | -13.10% | |
| Form EFFECT Aptorum Group Ltd | SEC filing · Form EFFECT | SEC EDGAR | -0.94% | +2.83% | |
| Form POS AM Aptorum Group Ltd | SEC filing · Form POS | SEC EDGAR | — | +28.30% | |
| Form 6-K Aptorum Group Ltd For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | — | +1.07% | |
| Form EFFECT Aptorum Group Ltd | SEC filing · Form EFFECT | SEC EDGAR | +1.10% | +3.17% | |
| Form S-4/A Aptorum Group Ltd | SEC filing · Form S-4 | SEC EDGAR | -0.60% | -3.80% | |
| Form S-4/A Aptorum Group Ltd | SEC filing · Form S-4 | SEC EDGAR | +0.00% | +0.94% | |
| Form 6-K Aptorum Group Ltd For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +14.98% | |
| Form S-4/A Aptorum Group Ltd | SEC filing · Form S-4 | SEC EDGAR | -0.27% | -3.09% | |
| Form 20-F Aptorum Group Ltd For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | — | -9.88% | |
| Form 6-K/A Aptorum Group Ltd For: Mar 26 | SEC filing · Form 6-K | SEC EDGAR | -3.81% | -11.43% | |
| Form 6-K Aptorum Group Ltd For: Mar 11 | SEC filing · Form 6-K | SEC EDGAR | — | +3.90% | |
| Aptorum Group and DiamiR Biosciences Announce Publication of microRNA Glioblastoma Biomarker Study in Diagnostics in Collaboration with the University of Pennsylvania | Press release | GlobeNewswire | +0.00% | -0.94% | |
| Aptorum Group Limited Announces Receipt of Nasdaq Notification Regarding Minimum Bid Price Deficiency | Press release | GlobeNewswire | +2.45% | +5.07% | |
| Form 6-K Aptorum Group Ltd For: Mar 06 | SEC filing · Form 6-K | SEC EDGAR | +2.45% | +5.07% | |
| Form 6-K Aptorum Group Ltd For: Feb 06 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +1.96% | |
| Aptorum Group Announces a Collaboration Between DiamiR Biosciences and Instant NanoBiosensors (INB) to Validate INB’s Automated APOE Testing Platform for Alzheimer’s Disease | Press release | GlobeNewswire | -2.44% | -5.76% | |
| Form 6-K Aptorum Group Ltd For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +6.81% | +1.46% | |
| Form S-4/A Aptorum Group Ltd | SEC filing · Form S-4 | SEC EDGAR | +6.81% | +1.46% | |
| Form F-3 Aptorum Group Ltd | SEC filing · Form F-3 | SEC EDGAR | +3.00% | +2.00% | |
| Form 6-K/A Aptorum Group Ltd For: Dec 05 | SEC filing · Form 6-K | SEC EDGAR | +0.78% | +2.69% | |
| Form EFFECT Aptorum Group Ltd | SEC filing · Form EFFECT | SEC EDGAR | +0.00% | +2.94% | |
| DiamiR Biosciences and Aptorum Group Announce Two Abstracts Accepted for Presentation at the Clinical Trials on Alzheimer’s Disease (CTAD) 2025 Conference | Press release | GlobeNewswire | -1.27% | +3.19% | |
| Form DEL AM Aptorum Group Ltd | SEC filing · Form DEL | SEC EDGAR | -1.27% | +3.19% | |
| Form F-1 Aptorum Group Ltd | SEC filing · Form F-1 | SEC EDGAR | +12.24% | +6.12% | |
| Form 6-K Aptorum Group Ltd For: Oct 16 | SEC filing · Form 6-K | SEC EDGAR | -0.67% | +3.33% | |
| Form 6-K Aptorum Group Ltd For: Aug 31 | SEC filing · Form 6-K | SEC EDGAR | -0.58% | -2.56% | |
| Aptorum Group Limited Announces Up To $6 Million Registered Direct Offering | Press release | GlobeNewswire | -11.22% | -17.21% | |
| As part of the planned merger with DiamiR Biosciences, Aptorum Group will expand its board and management team with seasoned executives | Press release | GlobeNewswire | -2.04% | -3.27% | |
| Form 6-K Aptorum Group Ltd For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -2.04% | -3.27% | |
| Form S-4 Aptorum Group Ltd | SEC filing · Form S-4 | SEC EDGAR | -0.91% | -5.00% | |
| Form 6-K Aptorum Group Ltd For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +0.39% | +3.57% | |
| Form 6-K Aptorum Group Ltd For: Sep 09 | SEC filing · Form 6-K | SEC EDGAR | +1.92% | -4.44% | |
| Aptorum Group and DiamiR Biosciences to Present at the H.C. Wainwright 27th Annual Global Investment Conference | Press release | GlobeNewswire | +0.00% | +1.09% | |
| DiamiR Biosciences and Aptorum Group Announce New York State Approval for DiamiR’s APOE Genotyping Test | Press release | GlobeNewswire | -1.09% | +54.55% | |
| Aptorum Group Limited Regains Compliance with NASDAQ’s Minimum Bid Price Requirement | Press release | GlobeNewswire | +0.00% | +2.16% | |
| Form 6-K Aptorum Group Ltd For: Jul 22 | SEC filing · Form 6-K | SEC EDGAR | -2.35% | +17.68% | |
| Aptorum Group Limited and DiamiR Biosciences Enter into Definitive Merger Agreement | Press release | GlobeNewswire | -9.70% | +44.78% | |
| Form 20-F Aptorum Group Ltd For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.10% | +1.10% | |
| Aptorum Group Limited Announces Receipt of Nasdaq Notification Regarding Minimum Bid Price Deficiency | Press release | GlobeNewswire | -0.51% | -7.58% | |
| Form 6-K Aptorum Group Ltd For: Apr 16 | SEC filing · Form 6-K | SEC EDGAR | -7.13% | -6.33% | |
| Form 6-K Aptorum Group Ltd For: Jan 07 | SEC filing · Form 6-K | SEC EDGAR | +2.37% | -5.33% | |
| Aptorum Group Limited Announces Pricing of $3.0 Million Registered Direct Offering | Press release | GlobeNewswire | -13.68% | -42.10% | |
| Aptorum Group Limited Reports Financial Results and Business Update for the Six Months Ended June 30, 2024 | Press release | Business Wire | -6.55% | -3.47% | |
| Form 6-K Aptorum Group Ltd For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -6.55% | -3.47% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the APM section they belong to.
Where else APM is measured.
APM earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Aptorum Group Limited - Class A Ordinary Shares's median reaction calculated?
Every labeled APM 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 79 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. 36% of APM'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 APM'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.