Onconova Therapeutics, Inc. (ONTX)
ONTX moved a median of +0.88% 30 minutes after news, and +0.81% by the close. How ONTX actually reacts to news — the realized, point-in-time move the market made, measured across 50 labeled events over the last three years with zero look-ahead.
ONTX’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 16% | 25 |
| 30-min | +0.88% | 65% | 26 |
| 60-min | +0.86% | 54% | 26 |
| to close | +0.81% | 54% | 26 |
| Middle 50% of ONTX reactions | -1.91% to +2.11% |
|---|---|
| Median reaction (30-min) | +0.88% |
| Measured reactions | 50 |
Half of all Onconova Therapeutics, Inc. news events land between -1.91% and +2.11% 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 ONTX moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ONTX's baseline. Nothing else.
Recent ONTX events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K Traws Pharma, Inc. For: May 16 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 10-Q Traws Pharma, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | — | — | |
| Form 10-K/A Traws Pharma, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | — | — | |
| Form 8-K Traws Pharma, Inc. For: Apr 16 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form D Traws Pharma, Inc. | SEC filing · Form D | SEC EDGAR | — | — | |
| Form DEFA14A Traws Pharma, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | — | — | |
| Form 8-K Traws Pharma, Inc. For: Apr 01 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form DEFA14A Traws Pharma, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | — | — | |
| Onconova Therapeutics, Inc. and Trawsfynydd Therapeutics, Inc. Announce Business Combination to Form Traws Pharma, Inc, a Best-in-Class Virology and Oncology Company | Press release | GlobeNewswire | -3.45% | -0.47% | |
| Traws Pharma Announces New Employee Inducement Grants | Press release | GlobeNewswire | -3.45% | -0.47% | |
| Form 10-K Onconova Therapeutics, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -3.45% | -0.47% | |
| Onconova Therapeutics’ Rigosertib Poster Selected for AACR 2024 | Press release | GlobeNewswire | +0.00% | +0.58% | |
| Onconova Therapeutics’ Narazaciclib ASH Poster Highlights Activity in Treatment Resistant Mantle Cell Lymphoma | Press release | GlobeNewswire | +0.70% | +1.55% | |
| Onconova Therapeutics’ Preclinical Narazaciclib Data at SABCS Highlights Differentiated Anti-Tumor Activity v. Other CDK4/6i’s | Press release | GlobeNewswire | -4.76% | +9.97% | |
| Onconova Therapeutics to Present at NobleCon19, Noble Capital Markets’ Nineteenth Annual Emerging Growth Equity Conference | Press release | GlobeNewswire | +0.00% | +2.54% | |
| Form 10-Q Onconova Therapeutics, For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -5.82% | |
| Form 8-K Onconova Therapeutics, For: Nov 14 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -5.82% | |
| Onconova Therapeutics Reports Corporate Update and Announces Third Quarter 2023 Financial Results | Press release | GlobeNewswire | +0.00% | -5.82% | |
| Onconova Therapeutics to Provide Corporate Update and Announce Third Quarter 2023 Financial Results on November 14, 2023 | Press release | GlobeNewswire | +0.00% | +2.33% | |
| Onconova Therapeutics’ ASH Poster To Focus on Narazaciclib in MCL | Press release | GlobeNewswire | — | +1.38% | |
| Onconova Expands Leadership Team with Two Key Appointments | Press release | GlobeNewswire | -0.37% | -0.22% | |
| Promising Preclinical Narazaciclib Data Presented at MCL Meeting | Press release | GlobeNewswire | +3.05% | +2.52% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ONTX section they belong to.
Where else ONTX is measured.
ONTX earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| REVIVE THERAPEUTICS LTD (RVVTF) | 51 | +1.42% | 58% |
| Ventripoint Diagnostics Ltd (VPT_CDNX) | 51 | -1.92% | 39% |
| PATIENT PORTAL TECHS INC (PPRG) | 50 | 0.00% | 11% |
| STRAUMANN HOLDING AG (SAUHF) | 50 | +0.01% | 50% |
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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How the numbers are made.
How is Onconova Therapeutics, Inc.'s median reaction calculated?
Every labeled ONTX 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 50 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. 65% of ONTX'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 ONTX'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.