POSCO Holdings Inc. American Depositary Shares (Each representing 1/4th of a share of) (PKX)
PKX moved a median of +0.04% 30 minutes after news, and 0.00% by the close. How PKX actually reacts to news — the realized, point-in-time move the market made, measured across 184 labeled events over the last three years with zero look-ahead.
PKX’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 47% | 178 |
| 30-min | +0.04% | 51% | 184 |
| 60-min | -0.06% | 46% | 184 |
| to close | 0.00% | 47% | 180 |
| Middle 50% of PKX reactions | -0.45% to +0.35% |
|---|---|
| Median reaction (30-min) | +0.04% |
| Measured reactions | 184 |
Half of all POSCO Holdings Inc. American Depositary Shares (Each representing 1/4th of a share of) news events land between -0.45% and +0.35% 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 PKX moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to PKX's baseline. Nothing else.
Recent PKX events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K POSCO HOLDINGS INC. For: Jul 15 | SEC filing · Form 6-K | SEC EDGAR | +0.32% | -1.65% | |
| Form 6-K POSCO HOLDINGS INC. For: Jul 10 | SEC filing · Form 6-K | SEC EDGAR | +0.24% | +0.66% | |
| Form 6-K POSCO HOLDINGS INC. For: Jul 02 | SEC filing · Form 6-K | SEC EDGAR | +1.25% | +2.14% | |
| Form 6-K POSCO HOLDINGS INC. For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +0.29% | -0.04% | |
| Form 6-K POSCO HOLDINGS INC. For: Jun 24 | SEC filing · Form 6-K | SEC EDGAR | +0.14% | -0.89% | |
| Form 6-K POSCO HOLDINGS INC. For: Jun 22 | SEC filing · Form 6-K | SEC EDGAR | +0.11% | +0.85% | |
| Form 6-K POSCO HOLDINGS INC. For: Jun 10 | SEC filing · Form 6-K | SEC EDGAR | +0.23% | -1.74% | |
| Form 6-K POSCO HOLDINGS INC. For: May 29 | SEC filing · Form 6-K | SEC EDGAR | -0.13% | -0.09% | |
| Form SD POSCO HOLDINGS INC. | SEC filing · Form SD | SEC EDGAR | -0.72% | -0.53% | |
| Form 6-K POSCO HOLDINGS INC. For: May 12 | SEC filing · Form 6-K | SEC EDGAR | +0.99% | +4.28% | |
| Form 6-K POSCO HOLDINGS INC. For: Apr 30 | SEC filing · Form 6-K | SEC EDGAR | — | +1.28% | |
| Form 20-F POSCO HOLDINGS INC. For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | -0.70% | -3.03% | |
| POSCO HOLDINGS INC. Files its Annual Report on Form 20-F | Press release | PR Newswire | -0.70% | -3.03% | |
| Form 6-K POSCO HOLDINGS INC. For: Apr 20 | SEC filing · Form 6-K | SEC EDGAR | -0.09% | +0.19% | |
| Form 6-K POSCO HOLDINGS INC. For: Apr 15 | SEC filing · Form 6-K | SEC EDGAR | +0.22% | -0.16% | |
| Form 6-K POSCO HOLDINGS INC. For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | -0.12% | +3.30% | |
| Form 6-K POSCO HOLDINGS INC. For: Mar 25 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -1.25% | |
| Form 6-K POSCO HOLDINGS INC. For: Mar 24 | SEC filing · Form 6-K | SEC EDGAR | +0.09% | +1.25% | |
| Form 6-K POSCO HOLDINGS INC. For: Mar 20 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -2.73% | |
| Form 6-K/A POSCO HOLDINGS INC. For: Feb 23 | SEC filing · Form 6-K | SEC EDGAR | +0.15% | -0.40% | |
| Form 6-K POSCO HOLDINGS INC. For: Feb 19 | SEC filing · Form 6-K | SEC EDGAR | +1.30% | +1.91% | |
| Form 6-K POSCO HOLDINGS INC. For: Feb 03 | SEC filing · Form 6-K | SEC EDGAR | -0.20% | -0.87% | |
| Form 6-K POSCO HOLDINGS INC. For: Feb 02 | SEC filing · Form 6-K | SEC EDGAR | +0.02% | +1.69% | |
| Form 6-K POSCO HOLDINGS INC. For: Jan 29 | SEC filing · Form 6-K | SEC EDGAR | +0.79% | -2.16% | |
| Form 6-K POSCO HOLDINGS INC. For: Jan 15 | SEC filing · Form 6-K | SEC EDGAR | +0.37% | -1.75% | |
| Form 6-K POSCO HOLDINGS INC. For: Jan 05 | SEC filing · Form 6-K | SEC EDGAR | +0.03% | -0.11% | |
| Form 6-K POSCO HOLDINGS INC. For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.00% | |
| Form 6-K POSCO HOLDINGS INC. For: Dec 19 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -0.95% | |
| Form 6-K POSCO HOLDINGS INC. For: Dec 16 | SEC filing · Form 6-K | SEC EDGAR | -0.04% | -0.92% | |
| Form 6-K POSCO HOLDINGS INC. For: Dec 12 | SEC filing · Form 6-K | SEC EDGAR | +0.63% | -0.09% | |
| Form 6-K POSCO HOLDINGS INC. For: Dec 08 | SEC filing · Form 6-K | SEC EDGAR | -0.24% | -0.57% | |
| Form 6-K POSCO HOLDINGS INC. For: Nov 28 | SEC filing · Form 6-K | SEC EDGAR | -0.37% | -0.79% | |
| Form 6-K POSCO HOLDINGS INC. For: Nov 12 | SEC filing · Form 6-K | SEC EDGAR | +0.28% | +0.86% | |
| Form 6-K POSCO HOLDINGS INC. For: Nov 05 | SEC filing · Form 6-K | SEC EDGAR | -0.26% | +1.80% | |
| Form 6-K POSCO HOLDINGS INC. For: Oct 27 | SEC filing · Form 6-K | SEC EDGAR | +0.33% | +2.00% | |
| Form 6-K POSCO HOLDINGS INC. For: Oct 14 | SEC filing · Form 6-K | SEC EDGAR | +0.49% | +4.46% | |
| Form SD POSCO HOLDINGS INC. | SEC filing · Form SD | SEC EDGAR | +0.51% | +0.51% | |
| Form 6-K POSCO HOLDINGS INC. For: Sep 17 | SEC filing · Form 6-K | SEC EDGAR | -0.06% | -0.63% | |
| Form 6-K POSCO HOLDINGS INC. For: Sep 05 | SEC filing · Form 6-K | SEC EDGAR | -0.18% | +1.66% | |
| Form 6-K POSCO HOLDINGS INC. For: Sep 03 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.57% | |
| Form 6-K POSCO HOLDINGS INC. For: Aug 29 | SEC filing · Form 6-K | SEC EDGAR | -0.36% | +0.27% | |
| Form 6-K POSCO HOLDINGS INC. For: Aug 28 | SEC filing · Form 6-K | SEC EDGAR | -0.83% | +0.21% | |
| Form 6-K POSCO HOLDINGS INC. For: Aug 21 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.41% | |
| Form 6-K POSCO HOLDINGS INC. For: Aug 19 | SEC filing · Form 6-K | SEC EDGAR | +0.28% | — | |
| Form 6-K POSCO HOLDINGS INC. For: Aug 12 | SEC filing · Form 6-K | SEC EDGAR | +0.38% | — | |
| Form 6-K POSCO HOLDINGS INC. For: Aug 05 | SEC filing · Form 6-K | SEC EDGAR | +0.21% | +0.79% | |
| Form 6-K POSCO HOLDINGS INC. For: Jul 31 | SEC filing · Form 6-K | SEC EDGAR | +0.44% | +0.48% | |
| HMN Li Project Sale for up to US$62 Million | Press release | Canada Newswire | +0.16% | -1.06% | |
| Form 6-K POSCO HOLDINGS INC. For: Jul 11 | SEC filing · Form 6-K | SEC EDGAR | +0.21% | +0.90% | |
| Form 6-K POSCO HOLDINGS INC. For: Jul 10 | SEC filing · Form 6-K | SEC EDGAR | +0.41% | +0.67% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the PKX section they belong to.
Where else PKX is measured.
PKX earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Pan Global Resources Inc (PGZ_CDNX) | 186 | 0.00% | 18% |
| Goldgroup Mining Inc. (GORO) | 184 | -0.29% | 41% |
| Hudbay Minerals Inc. Ordinary Shares (Canada) (HBM) | 183 | 0.00% | 49% |
| NewMarket Corp (NEU) | 183 | 0.00% | 37% |
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 Basic Materials names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is POSCO Holdings Inc. American Depositary Shares (Each representing 1/4th of a share of)'s median reaction calculated?
Every labeled PKX 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 184 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. 51% of PKX'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 PKX'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.