Weibo Corporation - American Depositary Shares (WB)
WB moved a median of -0.24% 30 minutes after news, and -0.46% by the close. How WB actually reacts to news — the realized, point-in-time move the market made, measured across 110 labeled events over the last three years with zero look-ahead.
WB’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.35% | 40% | 110 |
| 30-min | -0.24% | 40% | 110 |
| 60-min | -0.35% | 39% | 110 |
| to close | -0.46% | 33% | 110 |
| Middle 50% of WB reactions | -1.23% to +0.50% |
|---|---|
| Median reaction (30-min) | -0.24% |
| Measured reactions | 110 |
Half of all Weibo Corporation - American Depositary Shares news events land between -1.23% and +0.50% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How WB reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 12 | -0.78% | 33% | -0.60% |
| Analyst downgrades | 20 | -1.23% | 10% | -1.38% |
| Rating reiterations | 12 | +0.11% | 58% | -0.02% |
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 WB ranks against every other measured name →
That’s how WB usually reacts — get an email when it moves on news →Email me when WB moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to WB's baseline. Nothing else.
Recent WB events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K WEIBO Corp For: Aug 19 | SEC filing · Form 6-K | SEC EDGAR | -0.91% | -2.47% | |
| Weibo Announces Second Quarter 2026 Unaudited Financial Results | Press release | PR Newswire | -0.91% | -2.47% | |
| Form 6-K WEIBO Corp For: Jul 29 | SEC filing · Form 6-K | SEC EDGAR | +0.13% | -0.25% | |
| Weibo Corporation to Report Second Quarter 2026 Financial Results on August 19, 2026 | Press release | PR Newswire | +0.13% | -0.25% | |
| Form 6-K WEIBO Corp For: May 28 | SEC filing · Form 6-K | SEC EDGAR | +0.70% | +0.38% | |
| Weibo Announces First Quarter 2026 Unaudited Financial Results | Press release | PR Newswire | +0.70% | +0.38% | |
| Form 6-K WEIBO Corp For: May 27 | SEC filing · Form 6-K | SEC EDGAR | +0.88% | +1.64% | |
| Weibo Announces Results of 2026 Annual General Meeting | Press release | PR Newswire | +0.88% | +1.64% | |
| Weibo Publishes 2025 Environmental, Social and Governance Report | Press release | PR Newswire | -0.61% | -1.33% | |
| Form 6-K WEIBO Corp For: Apr 27 | SEC filing · Form 6-K | SEC EDGAR | +0.59% | -0.83% | |
| Weibo Corporation to Report First Quarter 2026 Financial Results on May 28, 2026 | Press release | PR Newswire | +0.59% | -0.83% | |
| Form 20-F WEIBO Corp For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | -0.35% | -2.46% | |
| Form 6-K WEIBO Corp For: Apr 23 | SEC filing · Form 6-K | SEC EDGAR | -0.35% | -2.46% | |
| Weibo Files its Annual Report on Form 20-F | Press release | PR Newswire | -0.35% | -2.46% | |
| Form 6-K WEIBO Corp For: Apr 13 | SEC filing · Form 6-K | SEC EDGAR | +0.11% | +1.14% | |
| Weibo to Hold Annual General Meeting on May 27, 2026 | Press release | PR Newswire | +0.11% | +1.14% | |
| Form 6-K WEIBO Corp For: Mar 18 | SEC filing · Form 6-K | SEC EDGAR | -0.38% | -5.57% | |
| Weibo Announces Fourth Quarter and Fiscal Year 2025 Unaudited Financial Results and Annual Dividend | Press release | PR Newswire | -0.38% | -5.57% | |
| Form 6-K WEIBO Corp For: Mar 13 | SEC filing · Form 6-K | SEC EDGAR | +0.21% | +0.41% | |
| Form 6-K WEIBO Corp For: Feb 12 | SEC filing · Form 6-K | SEC EDGAR | -1.37% | -2.35% | |
| Weibo Corporation to Report Fourth Quarter and Fiscal Year 2025 Financial Results on March 18, 2026 | Press release | PR Newswire | -1.37% | -2.35% | |
| Form 6-K WEIBO Corp For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.44% | +0.20% | |
| Form 6-K WEIBO Corp For: Nov 18 | SEC filing · Form 6-K | SEC EDGAR | +3.12% | +3.43% | |
| Weibo Announces Third Quarter 2025 Unaudited Financial Results | Press release | PR Newswire | +3.12% | +3.43% | |
| Form 6-K WEIBO Corp For: Oct 31 | SEC filing · Form 6-K | SEC EDGAR | +0.32% | -0.46% | |
| Weibo Corporation to Report Third Quarter 2025 Financial Results on November 18, 2025 | Press release | PR Newswire | +0.32% | -0.46% | |
| Form 6-K WEIBO Corp For: Aug 14 | SEC filing · Form 6-K | SEC EDGAR | +0.85% | +8.54% | |
| Weibo Announces Second Quarter 2025 Unaudited Financial Results | Press release | PR Newswire | +0.85% | +8.54% | |
| Form 6-K WEIBO Corp For: Jul 24 | SEC filing · Form 6-K | SEC EDGAR | -1.90% | -2.09% | |
| Weibo Corporation to Report Second Quarter 2025 Financial Results on August 14, 2025 | Press release | PR Newswire | -1.90% | -2.09% | |
| Form 6-K WEIBO Corp For: May 21 | SEC filing · Form 6-K | SEC EDGAR | -1.48% | -0.11% | |
| Weibo Announces First Quarter 2025 Unaudited Financial Results | Press release | PR Newswire | -1.48% | -0.11% | |
| Weibo Announces Results of 2025 Annual General Meeting | Press release | PR Newswire | -0.94% | -1.64% | |
| Form 6-K WEIBO Corp For: Apr 25 | SEC filing · Form 6-K | SEC EDGAR | +0.18% | -0.86% | |
| Weibo Corporation to Report First Quarter 2025 Financial Results on May 21, 2025 | Press release | PR Newswire | +0.18% | -0.86% | |
| Weibo Publishes 2024 Environmental, Social and Governance Report | Press release | PR Newswire | -1.71% | -0.66% | |
| Form 20-F WEIBO Corp For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | -0.26% | +0.78% | |
| Form 6-K WEIBO Corp For: Apr 15 | SEC filing · Form 6-K | SEC EDGAR | -0.26% | +0.78% | |
| Weibo Files its Annual Report on Form 20-F | Press release | PR Newswire | -0.26% | +0.78% | |
| Form 6-K WEIBO Corp For: Apr 11 | SEC filing · Form 6-K | SEC EDGAR | -1.05% | +0.00% | |
| Weibo to Hold Annual General Meeting on May 20, 2025 | Press release | PR Newswire | -1.05% | +0.00% | |
| Form 6-K WEIBO Corp For: Mar 13 | SEC filing · Form 6-K | SEC EDGAR | -0.96% | -0.10% | |
| Weibo Announces Fourth Quarter and Fiscal Year 2024 Unaudited Financial Results and Annual Dividend | Press release | PR Newswire | -0.96% | -0.10% | |
| Form 6-K WEIBO Corp For: Feb 18 | SEC filing · Form 6-K | SEC EDGAR | -5.28% | -3.04% | |
| Weibo Corporation to Report Fourth Quarter and Fiscal Year 2024 Financial Results on March 13, 2025 | Press release | PR Newswire | -5.28% | -3.04% | |
| Form 6-K WEIBO Corp For: Nov 19 | SEC filing · Form 6-K | SEC EDGAR | +4.70% | +3.78% | |
| Weibo Announces Third Quarter 2024 Unaudited Financial Results | Press release | PR Newswire | +4.70% | +3.78% | |
| Form 6-K WEIBO Corp For: Oct 29 | SEC filing · Form 6-K | SEC EDGAR | -0.99% | -3.33% | |
| Weibo Corporation to Report Third Quarter 2024 Financial Results on November 19, 2024 | Press release | PR Newswire | -0.99% | -3.33% | |
| Form 6-K WEIBO Corp For: Aug 22 | SEC filing · Form 6-K | SEC EDGAR | -0.31% | -3.72% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the WB section they belong to.
Where else WB is measured.
WB earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| FSD Pharma Inc. - Class B Subordinate Voting Shares (HUGE) | 110 | 0.00% | 44% |
| SOLITRON DEVICES INC (SODI) | 110 | 0.00% | 20% |
| IEH CORP (IEHC) | 109 | 0.00% | 16% |
| Vecima Networks Inc (VCM_TSE) | 108 | 0.00% | 32% |
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 Technology names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Weibo Corporation - American Depositary Shares's median reaction calculated?
Every labeled WB 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 110 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. 40% of WB'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 WB'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.