HealthStream, Inc. (HSTM)
HSTM moved a median of +0.09% 30 minutes after news, and +0.14% by the close. How HSTM actually reacts to news — the realized, point-in-time move the market made, measured across 359 labeled events over the last three years with zero look-ahead.
HSTM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 46% | 354 |
| 30-min | +0.09% | 53% | 358 |
| 60-min | +0.09% | 55% | 359 |
| to close | +0.14% | 54% | 359 |
| Middle 50% of HSTM reactions | -0.45% to +0.61% |
|---|---|
| Median reaction (30-min) | +0.09% |
| Measured reactions | 359 |
Half of all HealthStream, Inc. news events land between -0.45% and +0.61% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How HSTM reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 18 | -0.03% | 44% | -0.07% |
| Analyst downgrades | 11 | -0.20% | 27% | -0.04% |
| Rating reiterations | 15 | +0.11% | 53% | -0.46% |
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. 3 further classes were observed with fewer than 10 measured events and are not published. See how HSTM ranks against every other measured name →
That’s how HSTM usually reacts — get an email when it moves on news →Email me when HSTM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to HSTM's baseline. Nothing else.
Recent HSTM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K HEALTHSTREAM INC For: Sep 18 | SEC filing · Form 8-K | SEC EDGAR | +0.43% | +0.38% | |
| Form 8-K HEALTHSTREAM INC For: Sep 11 | SEC filing · Form 8-K | SEC EDGAR | -0.77% | -0.97% | |
| HealthStream Completes $40 Million Private Placement of Its Common Stock | Press release | Business Wire | -0.77% | -0.97% | |
| Form 8-K HEALTHSTREAM INC For: Sep 10 | SEC filing · Form 8-K | SEC EDGAR | +1.50% | +0.99% | |
| HealthStream Defines a New Enterprise Category Alongside the EHR and ERP, the Enterprise Clinical Workforce Platform (ECWP) | Press release | Business Wire | +1.50% | +0.99% | |
| Form 10-Q HEALTHSTREAM INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.12% | +1.88% | |
| Form 8-K HEALTHSTREAM INC For: Aug 03 | SEC filing · Form 8-K | SEC EDGAR | -0.24% | +3.40% | |
| HealthStream Announces Second Quarter 2026 Results | Press release | Business Wire | -0.24% | +3.40% | |
| Form 8-K HEALTHSTREAM INC For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | -0.57% | -2.79% | |
| HealthStream to Host Second Quarter 2026 Earnings Conference Call | Press release | Business Wire | +0.75% | -0.60% | |
| Form 8-K HEALTHSTREAM INC For: May 28 | SEC filing · Form 8-K | SEC EDGAR | -0.06% | +2.44% | |
| Form 8-K HEALTHSTREAM INC For: May 04 | SEC filing · Form 8-K | SEC EDGAR | +0.89% | -2.57% | |
| Form 10-Q HEALTHSTREAM INC For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +2.71% | |
| Form 8-K HEALTHSTREAM INC For: May 04 | SEC filing · Form 8-K | SEC EDGAR | -0.07% | +9.43% | |
| HealthStream Announces First Quarter 2026 Results | Press release | Business Wire | -0.07% | +9.43% | |
| HealthStream to Host First Quarter 2026 Earnings Conference Call | Press release | Business Wire | +0.00% | +0.19% | |
| Form ARS HEALTHSTREAM INC For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.35% | +2.36% | |
| Form DEF 14A HEALTHSTREAM INC For: May 28 | SEC filing · Form DEF | SEC EDGAR | +0.35% | +2.36% | |
| Form DEFA14A HEALTHSTREAM INC | SEC filing · Form DEFA14A | SEC EDGAR | +0.35% | +2.36% | |
| Virsys12® Named a Leader in the IDC MarketScape: U.S. Provider Data Management for Payers 2025–2026 Vendor Assessment | Press release | Business Wire | -0.12% | +0.52% | |
| Form 8-K HEALTHSTREAM INC For: Mar 13 | SEC filing · Form 8-K | SEC EDGAR | +0.89% | -1.83% | |
| HealthStream Announces Share Repurchase Program | Press release | Business Wire | +0.89% | -1.83% | |
| Form 10-K HEALTHSTREAM INC For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.09% | -0.33% | |
| Form 8-K HEALTHSTREAM INC For: Feb 23 | SEC filing · Form 8-K | SEC EDGAR | -0.02% | +2.70% | |
| HealthStream Announces Fourth Quarter & Full-Year 2025 Results | Press release | Business Wire | -0.02% | +2.70% | |
| HealthStream to Host Fourth Quarter & Full-Year 2025 Earnings Conference Call | Press release | Business Wire | +0.00% | -1.39% | |
| Form D HEALTHSTREAM INC | SEC filing · Form D | SEC EDGAR | +0.11% | -0.11% | |
| Form 8-K HEALTHSTREAM INC For: Dec 15 | SEC filing · Form 8-K | SEC EDGAR | +0.92% | -2.01% | |
| HealthStream Acquires MissionCare Collective, Adding the Nation’s Largest Caregiver Network with myCNAjobs.com, which Becomes the Company’s Third Career Network | Press release | Business Wire | +0.92% | -2.01% | |
| Form 8-K HEALTHSTREAM INC For: Dec 09 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.85% | |
| HealthStream CEO Rewards Employees with Contribution of Personally Owned Shares of Company Stock | Press release | Business Wire | +0.00% | +1.85% | |
| Form 8-K HEALTHSTREAM INC For: Nov 11 | SEC filing · Form 8-K | SEC EDGAR | +0.26% | -2.46% | |
| HealthStream Announces Share Repurchase Program | Press release | Business Wire | +0.00% | +1.70% | |
| Form 10-Q HEALTHSTREAM INC For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.46% | -0.53% | |
| Form 8-K HEALTHSTREAM INC For: Nov 03 | SEC filing · Form 8-K | SEC EDGAR | -5.35% | -4.69% | |
| HealthStream Announces Third Quarter 2025 Results | Press release | Business Wire | -5.35% | -4.69% | |
| HealthStream to Host Third Quarter 2025 Earnings Conference Call | Press release | Business Wire | -0.04% | -0.85% | |
| Form 8-K HEALTHSTREAM INC For: Oct 08 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -2.79% | |
| HealthStream Acquires Virsys12, Expanding its Credentialing Application Solution for Payers and Health Plan Enterprises | Press release | Business Wire | +0.00% | -2.79% | |
| Form 10-Q HEALTHSTREAM INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.12% | -0.46% | |
| Form 8-K HEALTHSTREAM INC For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | -0.23% | -1.38% | |
| HealthStream Announces Second Quarter 2025 Results | Press release | Business Wire | -0.23% | -1.38% | |
| HealthStream to Host Second Quarter 2025 Earnings Conference Call | Press release | Business Wire | +0.99% | -0.97% | |
| Form 8-K HEALTHSTREAM INC For: May 29 | SEC filing · Form 8-K | SEC EDGAR | -0.21% | +1.25% | |
| Form 10-Q HEALTHSTREAM INC For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.05% | -3.58% | |
| Form 8-K HEALTHSTREAM INC For: May 08 | SEC filing · Form 8-K | SEC EDGAR | +1.06% | -0.29% | |
| HealthStream Announces Share Repurchase Program | Press release | Business Wire | +1.06% | -0.29% | |
| Form 8-K HEALTHSTREAM INC For: May 05 | SEC filing · Form 8-K | SEC EDGAR | +5.73% | -4.21% | |
| HealthStream Announces First Quarter 2025 Results | Press release | Business Wire | +5.73% | -4.21% | |
| HealthStream to Host First Quarter 2025 Earnings Conference Call | Press release | Business Wire | +0.27% | +0.85% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the HSTM section they belong to.
Where else HSTM is measured.
HSTM earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| NetScout Systems, Inc. (NTCT) | 360 | +0.10% | 54% |
| Rambus, Inc. (RMBS) | 360 | -0.20% | 44% |
| Science Applications International Corporation (SAIC) | 359 | +0.08% | 55% |
| ACM Research, Inc. - Class A (ACMR) | 358 | -0.24% | 44% |
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.
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Every name we’ve measured, in one place.
How the numbers are made.
How is HealthStream, Inc.'s median reaction calculated?
Every labeled HSTM 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 359 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. 53% of HSTM'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 HSTM'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.