Hudson Technologies, Inc. (HDSN)
HDSN moved a median of -0.11% 30 minutes after news, and -0.17% by the close. How HDSN actually reacts to news — the realized, point-in-time move the market made, measured across 189 labeled events over the last three years with zero look-ahead.
HDSN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.09% | 53% | 183 |
| 30-min | -0.11% | 45% | 188 |
| 60-min | -0.03% | 46% | 188 |
| to close | -0.17% | 44% | 186 |
| Middle 50% of HDSN reactions | -0.65% to +0.70% |
|---|---|
| Median reaction (30-min) | -0.11% |
| Measured reactions | 189 |
Half of all Hudson Technologies, Inc. news events land between -0.65% and +0.70% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How HDSN reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 14 | -0.05% | 36% | +1.06% |
| Analyst downgrades | 19 | -1.27% | 26% | -1.13% |
| Rating reiterations | 19 | -0.64% | 21% | -0.94% |
| Price-target cuts | 11 | -0.16% | 18% | +0.72% |
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 HDSN ranks against every other measured name →
That’s how HDSN usually reacts — get an email when it moves on news →Email me when HDSN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to HDSN's baseline. Nothing else.
Recent HDSN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Hudson Technologies to Host Conference Call to Discuss Third Quarter 2026 Results | Press release | GlobeNewswire | -0.20% | -0.78% | |
| Hudson Technologies Signs Joint Development Agreement with Icorium; Expands Commitment to Commercialize and Scale Patented Extractive Distillation Technology | Press release | GlobeNewswire | -0.39% | +0.39% | |
| Hudson Technologies to Host Climate Week NYC 2026 Panel Discussion | Press release | GlobeNewswire | -0.51% | -1.10% | |
| Form 10-Q HUDSON TECHNOLOGIES INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.34% | — | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | -5.39% | -9.08% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | -5.39% | -9.08% | |
| Hudson Technologies Re-Awarded Defense Logistics Agency Contract | Press release | GlobeNewswire | -5.39% | -9.08% | |
| Hudson Technologies to Host Conference Call to Discuss Second Quarter 2026 Results | Press release | GlobeNewswire | +0.83% | +3.00% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Jun 11 | SEC filing · Form 8-K | SEC EDGAR | +1.21% | -3.62% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | +0.72% | +1.08% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: May 27 | SEC filing · Form 8-K | SEC EDGAR | +0.09% | -0.38% | |
| Hudson Technologies Receives Extension of Contract with the United States Defense Logistics Agency | Press release | GlobeNewswire | +0.09% | -0.38% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: May 19 | SEC filing · Form 8-K | SEC EDGAR | -1.99% | +2.78% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: May 18 | SEC filing · Form 8-K | SEC EDGAR | +1.00% | -1.20% | |
| Hudson Technologies Announces Open Market Share Purchases by the Board and Senior Management | Press release | GlobeNewswire | +1.00% | -1.20% | |
| Form 10-Q HUDSON TECHNOLOGIES INC For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.75% | -3.69% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: May 06 | SEC filing · Form 8-K | SEC EDGAR | -5.25% | -7.02% | |
| Hudson Technologies Reports First Quarter 2026 Results | Press release | GlobeNewswire | -5.25% | -7.02% | |
| Form ARS HUDSON TECHNOLOGIES INC For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.16% | -0.63% | |
| Form DEF 14A HUDSON TECHNOLOGIES INC For: Jun 10 | SEC filing · Form DEF | SEC EDGAR | -0.16% | -0.63% | |
| Form DEFA14A HUDSON TECHNOLOGIES INC | SEC filing · Form DEFA14A | SEC EDGAR | -0.16% | -0.63% | |
| Hudson Technologies to Host Conference Call to Discuss First Quarter 2026 Results | Press release | GlobeNewswire | +2.58% | +0.00% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Apr 10 | SEC filing · Form 8-K | SEC EDGAR | +1.35% | +3.87% | |
| Hudson Technologies Announces Election of Alan Sheriff and Jeffrey Feeler as Independent Directors | Press release | GlobeNewswire | +1.35% | +3.87% | |
| Hudson Technologies Signs Licensing Agreement with Solstice Advanced Materials for the Reclamation and Resale of Patented HFO Refrigerants | Press release | GlobeNewswire | +0.00% | -6.80% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Mar 13 | SEC filing · Form 8-K | SEC EDGAR | +0.76% | +0.51% | |
| Hudson Technologies Announces Management Appointments to Strengthen Operations, Extend Market Reach and Accelerate Growth | Press release | GlobeNewswire | +0.76% | +0.51% | |
| Form 10-K HUDSON TECHNOLOGIES INC For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | +3.21% | |
| Hudson Technologies to Attend 38th Annual Roth Conference | Press release | GlobeNewswire | -0.24% | -2.26% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Mar 04 | SEC filing · Form 8-K | SEC EDGAR | +1.00% | -2.31% | |
| Hudson Technologies Reports Fourth Quarter and Year-End 2025 Results | Press release | GlobeNewswire | +1.00% | -2.31% | |
| Hudson Technologies to Host Conference Call to Discuss Fourth Quarter and Full Year 2025 Results | Press release | GlobeNewswire | -0.55% | +0.28% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Jan 30 | SEC filing · Form 8-K | SEC EDGAR | -0.42% | +3.36% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Jan 30 | SEC filing · Form 8-K | SEC EDGAR | +1.42% | +1.99% | |
| Hudson Technologies Provides Update on Status of Defense Logistics Agency Contract | Press release | GlobeNewswire | +1.42% | +1.99% | |
| Form EFFECT HUDSON TECHNOLOGIES INC | SEC filing · Form EFFECT | SEC EDGAR | +0.71% | +1.57% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Dec 17 | SEC filing · Form 8-K | SEC EDGAR | +0.94% | -1.22% | |
| Hudson Technologies Announces Accretive Acquisition of Refrigerants Inc. | Press release | GlobeNewswire | +0.94% | -1.22% | |
| Form S-3 HUDSON TECHNOLOGIES INC | SEC filing · Form S-3 | SEC EDGAR | +1.09% | +0.00% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Dec 09 | SEC filing · Form 8-K | SEC EDGAR | +0.29% | +3.60% | |
| Hudson Technologies Selected to Support California Air Resources Board’s Refresh Pilot Program for Refrigerant Recovery & Reclamation | Press release | GlobeNewswire | -0.62% | -3.59% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Nov 25 | SEC filing · Form 8-K | SEC EDGAR | -1.11% | +1.11% | |
| Hudson Technologies Board of Directors Approves Increase in Share Repurchase Authorization | Press release | GlobeNewswire | -1.11% | +1.11% | |
| Form 10-Q HUDSON TECHNOLOGIES INC For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.04% | +2.04% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | -9.87% | -11.84% | |
| Hudson Technologies Reports Third Quarter 2025 Results | Press release | GlobeNewswire | -9.87% | -11.84% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Nov 03 | SEC filing · Form 8-K | SEC EDGAR | -4.34% | -2.97% | |
| Hudson Technologies Announces CEO Departure and Succession Plan | Press release | GlobeNewswire | -4.34% | -2.97% | |
| Form 8-K HUDSON TECHNOLOGIES INC For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | -1.91% | -1.99% | |
| Hudson Technologies to Host Conference Call to Discuss Third Quarter 2025 Results | Press release | GlobeNewswire | +0.00% | +0.55% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the HDSN section they belong to.
Where else HDSN is measured.
HDSN earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Stantec Inc (STN) | 190 | +0.09% | 53% |
| Cemtrex Inc. (CETX) | 189 | -1.27% | 39% |
| Heartland Express, Inc. (HTLD) | 189 | -0.16% | 41% |
| Pangaea Logistics Solutions Ltd. (PANL) | 188 | 0.00% | 49% |
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 Industrials names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Hudson Technologies, Inc.'s median reaction calculated?
Every labeled HDSN 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 189 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. 45% of HDSN'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 HDSN'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.