WW International, Inc. (WW)
WW moved a median of +0.52% 30 minutes after news, and -0.76% by the close. How WW actually reacts to news — the realized, point-in-time move the market made, measured across 325 labeled events over the last three years with zero look-ahead.
WW’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.37% | 56% | 320 |
| 30-min | +0.52% | 53% | 320 |
| 60-min | -0.09% | 48% | 320 |
| to close | -0.76% | 44% | 319 |
| Middle 50% of WW reactions | -2.31% to +2.58% |
|---|---|
| Median reaction (30-min) | +0.52% |
| Measured reactions | 325 |
Half of all WW International, Inc. news events land between -2.31% and +2.58% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How WW reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 11 | +0.83% | 55% | +2.04% |
| Analyst downgrades | 13 | -0.84% | 23% | -0.99% |
| Coverage initiations | 11 | -0.75% | 36% | -4.50% |
| Rating reiterations | 27 | 0.00% | 48% | -0.54% |
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. 1 further class was observed with fewer than 10 measured events and is not published. See how WW ranks against every other measured name →
That’s how WW usually reacts — get an email when it moves on news →Email me when WW moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to WW's baseline. Nothing else.
Recent WW events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Weight Watchers and Google Health Enterprise Launch New Collaboration to Enhance Engagement and Outcomes in Weight Health Programs | Press release | GlobeNewswire | -2.98% | +4.97% | |
| Form 8-K/A WW INTERNATIONAL, INC. For: Sep 09 | SEC filing · Form 8-K | SEC EDGAR | -0.28% | +0.49% | |
| Form 8-K WW INTERNATIONAL, INC. For: Sep 09 | SEC filing · Form 8-K | SEC EDGAR | -1.22% | -14.97% | |
| Weight Watchers Appoints Stephen Bye as Chief Executive Officer | Press release | GlobeNewswire | -1.22% | -14.97% | |
| Weight Watchers to Participate in Morgan Stanley Annual Global Healthcare Conference | Press release | GlobeNewswire | +1.62% | +2.67% | |
| Form 10-Q WW INTERNATIONAL, INC. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.30% | +2.30% | |
| Form 8-K WW INTERNATIONAL, INC. For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | +2.30% | +2.30% | |
| Weight Watchers Announces Second Quarter 2026 Results | Press release | GlobeNewswire | +2.30% | +2.30% | |
| Weight Watchers Schedules Second Quarter 2026 Earnings Conference Call | Press release | GlobeNewswire | +2.44% | -1.40% | |
| Sam’s Club® and Weight Watchers® Collaborate to Expand Access to Affordable, Holistic Wellness Experiences for Members | Press release | GlobeNewswire | +0.25% | -5.58% | |
| Weight Watchers and FlavCity Announce Collaboration Focused on Strength, Nutrition, and Community | Press release | GlobeNewswire | -0.77% | +0.71% | |
| Weight Watchers Med+ Establishes Access to GLP-1s Through Medicare GLP-1 Bridge Program | Press release | GlobeNewswire | -0.45% | -3.62% | |
| Weight Watchers to Support the American Heart Association’s Healthy Living BEYOND Weight Study | Press release | GlobeNewswire | -0.42% | -3.96% | |
| Form 8-K WW INTERNATIONAL, INC. For: Jun 12 | SEC filing · Form 8-K | SEC EDGAR | +0.32% | +0.16% | |
| Form DEFA14A WW INTERNATIONAL, INC. | SEC filing · Form DEFA14A | SEC EDGAR | +0.03% | +0.38% | |
| Weight Watchers to Increase Access to Comprehensive Weight Loss Options for Patients Nationwide through LillyDirect | Press release | GlobeNewswire | -2.55% | +9.13% | |
| Form 8-K WW INTERNATIONAL, INC. For: May 14 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -6.70% | |
| Form DEFA14A WW INTERNATIONAL, INC. | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | -6.70% | |
| Form 10-Q WW INTERNATIONAL, INC. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -5.69% | -15.09% | |
| Form 8-K WW INTERNATIONAL, INC. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | -5.69% | -15.09% | |
| Weight Watchers Announces First Quarter 2026 Results | Press release | GlobeNewswire | -5.69% | -15.09% | |
| Weight Watchers Expands Med+ With Access to New Ozempic® pill (semaglutide) | Press release | GlobeNewswire | +1.78% | +0.00% | |
| Form ARS WW INTERNATIONAL, INC. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +1.78% | +0.00% | |
| Form DEF 14A WW INTERNATIONAL, INC. For: Jun 12 | SEC filing · Form DEF | SEC EDGAR | +1.78% | +0.00% | |
| Form 8-K WW INTERNATIONAL, INC. For: Apr 27 | SEC filing · Form 8-K | SEC EDGAR | +4.06% | +9.48% | |
| Weight Watchers Announces Actions to Utilize Up to $40 million to Pay Down Debt | Press release | GlobeNewswire | +4.06% | +9.48% | |
| Weight Watchers Schedules First Quarter 2026 Earnings Conference Call | Press release | GlobeNewswire | -0.11% | -0.21% | |
| Form 8-K WW INTERNATIONAL, INC. For: Apr 13 | SEC filing · Form 8-K | SEC EDGAR | -0.60% | -8.34% | |
| Form 8-K WW INTERNATIONAL, INC. For: Apr 19 | SEC filing · Form 8-K | SEC EDGAR | +1.44% | -6.98% | |
| Weight Watchers Appoints Proven Healthcare Executive Heather Thiltgen to Board of Directors | Press release | GlobeNewswire | +1.44% | -6.98% | |
| Form 8-K WW INTERNATIONAL, INC. For: Apr 13 | SEC filing · Form 8-K | SEC EDGAR | +1.44% | -6.98% | |
| Form 8-K/A WW INTERNATIONAL, INC. For: Apr 06 | SEC filing · Form 8-K | SEC EDGAR | -5.34% | -7.77% | |
| Weight Watchers Announces Board Committee Appointments | Press release | GlobeNewswire | -5.34% | -7.77% | |
| Weight Watchers Launches Eli Lilly and Company’s New Oral GLP-1 Foundayo® Available Through LillyDirect | Press release | GlobeNewswire | -5.34% | -7.77% | |
| Form 8-K WW INTERNATIONAL, INC. For: Apr 06 | SEC filing · Form 8-K | SEC EDGAR | +0.63% | +4.68% | |
| Weight Watchers Appoints Lisa Gavales and Sue Gove to Board of Directors | Press release | GlobeNewswire | -0.59% | +5.02% | |
| Form 8-K WW INTERNATIONAL, INC. For: Mar 30 | SEC filing · Form 8-K | SEC EDGAR | -1.94% | -10.37% | |
| Weight Watchers Announces Leadership Transition and Board Updates | Press release | GlobeNewswire | -1.94% | -10.37% | |
| Weight Watchers Announces Best in Market Self-Pay Wegovy® Pricing for Med+ Members and the Launch of Preferred Subscription Pricing for Wegovy via NovoCare® | Press release | GlobeNewswire | +1.13% | +3.08% | |
| Form 10-K WW INTERNATIONAL, INC. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +4.80% | -7.42% | |
| Form 8-K WW INTERNATIONAL, INC. For: Mar 16 | SEC filing · Form 8-K | SEC EDGAR | +4.80% | -7.42% | |
| Weight Watchers Announces Fourth Quarter and Full Year 2025 Results | Press release | GlobeNewswire | +4.80% | -7.42% | |
| Weight Watchers Report Finds Integrated GLP-1 Support Drives Significantly Greater Weight Loss Than Medication Alone | Press release | GlobeNewswire | +2.99% | +1.45% | |
| Weight Watchers Schedules Fourth Quarter and Full Year 2025 Earnings Conference Call | Press release | GlobeNewswire | -0.53% | +5.77% | |
| Weight Watchers Partners with PVOLVE to Deliver Clinically Validated Strength Workouts to Members in the GLP-1 Era | Press release | GlobeNewswire | +0.78% | -0.08% | |
| Weight Watchers to Participate in Upcoming Investor Conferences | Press release | GlobeNewswire | +0.82% | -1.94% | |
| Weight Watchers Expands Its Integrated GLP-1 Platform with Access to Wegovy® Pill Advancing a New Standard for Long-Term Weight Health | Press release | GlobeNewswire | +0.75% | +0.50% | |
| Form 8-K WW INTERNATIONAL, INC. For: Dec 18 | SEC filing · Form 8-K | SEC EDGAR | -0.73% | -0.43% | |
| Weight Watchers Launches a Fully Integrated Platform for the GLP-1 Era | Press release | GlobeNewswire | +2.17% | +12.50% | |
| Weight Watchers Launches a Fully Integrated Platform for the GLP-1 Era | Press release | GlobeNewswire | +2.17% | +12.50% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the WW section they belong to.
Where else WW is measured.
WW earnings → · Analyst actions → · SEC filings →
Every ticker we measure the same way24
Apple (AAPL)
How AAPL actually reacts to news, measured.
NVIDIA (NVDA)
How NVDA actually reacts to news, measured.
Tesla (TSLA)
How TSLA actually reacts to news, measured.
Microsoft (MSFT)
How MSFT actually reacts to news, measured.
Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
How AMZN actually reacts to news, measured.
Alphabet (GOOG)
How GOOG actually reacts to news, measured.
Meta Platforms (META)
How META actually reacts to news, measured.
Broadcom (AVGO)
How AVGO actually reacts to news, measured.
JPMorgan Chase (JPM)
How JPM actually reacts to news, measured.
Visa (V)
How V actually reacts to news, measured.
Walmart (WMT)
How WMT actually reacts to news, measured.
Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
How UNH actually reacts to news, measured.
Netflix (NFLX)
How NFLX actually reacts to news, measured.
Johnson & Johnson (JNJ)
How JNJ actually reacts to news, measured.
Exxon Mobil (XOM)
How XOM actually reacts to news, measured.
Home Depot (HD)
How HD actually reacts to news, measured.
Costco (COST)
How COST actually reacts to news, measured.
Mastercard (MA)
How MA actually reacts to news, measured.
Oracle (ORCL)
How ORCL actually reacts to news, measured.
Salesforce (CRM)
How CRM actually reacts to news, measured.
Bank of America (BAC)
How BAC actually reacts to news, measured.
Coca-Cola (KO)
How KO actually reacts to news, measured.
Walt Disney (DIS)
How DIS actually reacts to news, measured.
Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is WW International, Inc.'s median reaction calculated?
Every labeled WW 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 325 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 WW'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 WW'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.