KDDI CORP UNSP/ADR (KDDIY)
KDDIY moved a median of +0.06% 30 minutes after news, and +0.18% by the close. How KDDIY actually reacts to news — the realized, point-in-time move the market made, measured across 66 labeled events over the last three years with zero look-ahead.
KDDIY’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.01% | 50% | 64 |
| 30-min | +0.06% | 52% | 65 |
| 60-min | +0.14% | 63% | 65 |
| to close | +0.18% | 69% | 65 |
| Middle 50% of KDDIY reactions | -0.21% to +0.31% |
|---|---|
| Median reaction (30-min) | +0.06% |
| Measured reactions | 66 |
Half of all KDDI CORP UNSP/ADR news events land between -0.21% and +0.31% 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 KDDIY moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to KDDIY's baseline. Nothing else.
Recent KDDIY events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Telehouse Canada Undergoes Major Infrastructure Upgrade to Scale AI-Driven Organizations | Press release | Business Wire | +2.16% | -0.09% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against KDDI Corporation (KDDIY) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | +0.11% | +0.06% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against KDDI Corporation (KDDIY) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.04% | -0.02% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages KDDI Corporation (KDDIY) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +1.53% | +1.50% | |
| KDDI Corporation (KDDIY) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.03% | +0.06% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages KDDI Corporation (KDDIY) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.01% | -0.41% | |
| KDDI Corporation (KDDIY) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.26% | +0.46% | |
| KDDI Corporation (KDDIY) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.26% | +0.46% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against KDDI Corporation (KDDIY) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.00% | +0.74% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages KDDI Corporation (KDDIY) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.00% | -0.23% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against KDDI Corporation (KDDIY) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | — | — |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the KDDIY section they belong to.
Where else KDDIY is measured.
KDDIY earnings → · Analyst actions → · SEC filings →
Other Communication Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| QUEBECOR INC B (QBCRF) | 70 | 0.00% | 23% |
| Cogeco Communications Inc (CCA_TSE) | 69 | -0.01% | 47% |
| PHAROL SGPS SA ORD (PHRZF) | 56 | 0.00% | 0% |
| TELENOR ASA S/ADR (TELNY) | 54 | 0.00% | 39% |
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 Communication Services names, measured the same way →
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How the numbers are made.
How is KDDI CORP UNSP/ADR's median reaction calculated?
Every labeled KDDIY 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 66 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. 52% of KDDIY'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 KDDIY'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.