Janus Henderson Group plc Ordinary Shares (JHG)
JHG moved a median of -0.01% 30 minutes after news, and -0.03% by the close. How JHG actually reacts to news — the realized, point-in-time move the market made, measured across 1,749 labeled events over the last three years with zero look-ahead.
JHG’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 47% | 1,646 |
| 30-min | -0.01% | 45% | 1,700 |
| 60-min | -0.01% | 45% | 1,701 |
| to close | -0.03% | 44% | 1,714 |
| Middle 50% of JHG reactions | -0.16% to +0.13% |
|---|---|
| Median reaction (30-min) | -0.01% |
| Measured reactions | 1,749 |
Half of all Janus Henderson Group plc Ordinary Shares news events land between -0.16% and +0.13% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How JHG reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 29 | -0.28% | 28% | -0.08% |
| Analyst downgrades | 12 | +0.31% | 67% | +0.32% |
| Coverage initiations | 12 | +0.64% | 75% | +0.07% |
| Rating reiterations | 53 | +0.03% | 53% | +0.22% |
| Price-target raises | 35 | +0.04% | 54% | +0.22% |
| Price-target cuts | 10 | +0.23% | 60% | 0.00% |
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. See how JHG ranks against every other measured name →
That’s how JHG usually reacts — get an email when it moves on news →Email me when JHG moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to JHG's baseline. Nothing else.
Recent JHG events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Janus Henderson Further Bolsters Global Equities Franchise with Two Senior Investment Appointments | Press release | Business Wire | — | — | |
| Janus Henderson’s AAA CLO ETF (JAAA), the World’s Largest CLO ETF, Surpasses $30 Billion in Assets Under Management | Press release | Business Wire | — | — | |
| Form 8-K JANUS HENDERSON GROUP For: Jun 30 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form POS AM JANUS HENDERSON GROUP | SEC filing · Form POS | SEC EDGAR | — | — | |
| Form S-8 POS JANUS HENDERSON GROUP | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 11-K JANUS HENDERSON GROUP For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.00% | -0.02% | |
| Form 8-K JANUS HENDERSON GROUP For: Jun 16 | SEC filing · Form 8-K | SEC EDGAR | -0.04% | -0.10% | |
| Janus Henderson Announces Receipt of Required Regulatory Approvals and Client Consents Following Resounding Shareholder Approval of the Trian and General Catalyst Take-Private Transaction | Press release | Business Wire | -0.04% | -0.10% | |
| Janus Henderson and General Catalyst’s Percepta Build AI-Native Investment and Client Tools, Powered by Anthropic's Claude | Press release | Business Wire | -0.01% | +0.02% | |
| Janus Henderson Expands European Private Markets Capabilities with Acquisition of Rantum Capital | Press release | Business Wire | -0.07% | +0.04% | |
| Janus Henderson Investors Announces Changes to ETF Line-Up | Press release | Business Wire | -0.03% | +0.04% | |
| Form 8-K JANUS HENDERSON GROUP For: May 29 | SEC filing · Form 8-K | SEC EDGAR | -0.01% | -0.02% | |
| Jupiter Borrower, Inc. Announces Launch of Offer to Purchase for Cash Any and All of Janus Henderson US (Holdings) Inc.’s Outstanding 5.450% Senior Notes Due 2034 | Press release | Business Wire | +0.05% | +0.00% | |
| Janus Henderson Investor Survey Reveals How Investors View AI: As an Investment Theme and for Financial Guidance | Press release | Business Wire | +0.00% | +0.04% | |
| Form 13F-HR/A JANUS HENDERSON GROUP For: Mar 31 | SEC filing · Form 13F-HR | SEC EDGAR | +0.04% | +0.13% | |
| Form 13F-HR JANUS HENDERSON GROUP For: Mar 31 | SEC filing · Form 13F-HR | SEC EDGAR | +0.01% | +0.07% | |
| Form 10-Q JANUS HENDERSON GROUP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.06% | -0.06% | |
| Form 8-K JANUS HENDERSON GROUP For: May 08 | SEC filing · Form 8-K | SEC EDGAR | +0.06% | -0.06% | |
| Janus Henderson Group plc Reports First Quarter 2026 Results | Press release | Business Wire | +0.06% | -0.06% | |
| Form CT ORDER JANUS HENDERSON GROUP | SEC filing · Form CT | SEC EDGAR | +0.00% | +0.07% | |
| Janus Henderson to Report First Quarter 2026 Results | Press release | Business Wire | -0.03% | -0.02% | |
| Janus Henderson Launches Two Structured Income ETFs | Press release | Business Wire | -0.06% | -0.08% | |
| Form 8-K JANUS HENDERSON GROUP For: Apr 16 | SEC filing · Form 8-K | SEC EDGAR | +0.03% | +0.00% | |
| Form ARS JANUS HENDERSON GROUP For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.03% | +0.00% | |
| Form DEF 14A JANUS HENDERSON GROUP For: May 29 | SEC filing · Form DEF | SEC EDGAR | +0.03% | +0.00% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.03% | +0.00% | |
| Janus Henderson Announces Resounding Shareholder Approval of the Trian and General Catalyst Transaction | Press release | Business Wire | +0.03% | +0.00% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.04% | -0.23% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.01% | -0.02% | |
| Form PRE 14A JANUS HENDERSON GROUP For: May 29 | SEC filing · Form PRE | SEC EDGAR | +0.05% | +0.04% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | -0.08% | -0.08% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | -0.03% | -0.04% | |
| Form 8-K JANUS HENDERSON GROUP For: Mar 24 | SEC filing · Form 8-K | SEC EDGAR | +0.13% | +0.04% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.05% | +0.04% | |
| Janus Henderson Launches US Equity Enhanced Income ETF (JUDO) | Press release | Business Wire | +0.05% | +0.04% | |
| Form 8-K JANUS HENDERSON GROUP For: Mar 24 | SEC filing · Form 8-K | SEC EDGAR | +0.05% | +0.04% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.13% | -0.48% | |
| Trian and General Catalyst Agree to Increase Merger Consideration to $52.00 Per Share in Cash for Janus Henderson Group plc and Have Made the Only Actionable Proposal | Press release | Business Wire | +0.13% | -0.48% | |
| Trian and General Catalyst Amend Merger Agreement with Janus Henderson at Increased Price of $52.00 Per Share in Cash | Press release | Business Wire | -0.40% | -0.15% | |
| Trian Releases Investor Presentation Explaining Its Strong Opposition to Victory Capital’s Latest Proposal For Janus Henderson | Press release | Business Wire | -0.94% | -1.21% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | -0.38% | +0.84% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.19% | -0.27% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.19% | -0.27% | |
| Janus Henderson Special Committee Confirms Receipt of Revised Unsolicited, Non-Binding Proposal from Victory Capital | Press release | Business Wire | -0.05% | -0.47% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | -0.96% | -0.55% | |
| Form DEFM14A JANUS HENDERSON GROUP | SEC filing · Form DEFM14A | SEC EDGAR | -0.96% | -0.55% | |
| Janus Henderson Group plc Board of Directors Determines by Unanimous Vote that Victory Capital’s Proposal Is Not Superior and Reaffirms Recommendation of Transaction with Trian and General Catalyst | Press release | Business Wire | -0.96% | -0.55% | |
| Trian and General Catalyst Affirm Commitment to Expeditiously Closing Previously Announced All-Cash Acquisition of Janus Henderson Group plc | Press release | Business Wire | -0.96% | -0.55% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.23% | +0.27% | |
| Form DEFA14A JANUS HENDERSON GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.23% | +0.27% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the JHG section they belong to.
Where else JHG is measured.
JHG earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Toronto Dominion Bank (The) (TD) | 2,000+ | +0.01% | 51% |
| Willis Towers Watson Public Limited Company - Ordinary Shares (WLTW) | 1,897 | 0.00% | 50% |
| IBERIABANK (IBKC) | 1,736 | -0.02% | 46% |
| Lloyds Banking Group Plc American Depositary Shares (LYG) | 1,713 | 0.00% | 40% |
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 Financial Services names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Janus Henderson Group plc Ordinary Shares's median reaction calculated?
Every labeled JHG 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 1,749 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 JHG'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 JHG'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.