Companhia Siderurgica Nacional S.A. (SID)
SID moved a median of 0.00% 30 minutes after news, and 0.00% by the close. How SID actually reacts to news — the realized, point-in-time move the market made, measured across 87 labeled events over the last three years with zero look-ahead.
SID’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 41% | 86 |
| 30-min | 0.00% | 41% | 87 |
| 60-min | 0.00% | 40% | 87 |
| to close | 0.00% | 44% | 87 |
| Middle 50% of SID reactions | -0.57% to +0.68% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 87 |
Half of all Companhia Siderurgica Nacional S.A. news events land between -0.57% and +0.68% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How SID reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 14 | +0.46% | 64% | +1.06% |
| Analyst downgrades | 14 | -0.64% | 36% | -0.53% |
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. 3 further classes were observed with fewer than 10 measured events and are not published. See how SID ranks against every other measured name →
That’s how SID usually reacts — get an email when it moves on news →Email me when SID moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SID's baseline. Nothing else.
Recent SID events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -1.38% | -0.78% | |
| Announcement of Final Results of Private Exchange Offer for CSN Inova Ventures’ Outstanding 6.750% Senior Notes due 2028 and Consent Solicitation | Press release | GlobeNewswire | -0.48% | -4.45% | |
| Announcement of Private Exchange Offer for Any and All of CSN Inova Ventures’ Outstanding 6.750% Senior Notes due 2028 and Consent Solicitation | Press release | GlobeNewswire | -0.68% | -2.42% | |
| CSN announces its Annual Report on Form 20-F for the fiscal year ended December 31, 2025 | Press release | PR Newswire | +0.39% | +0.00% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -4.82% | -11.11% | |
| Form 6-K NATIONAL STEEL CO For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | -4.82% | -11.11% | |
| Form 6-K NATIONAL STEEL CO For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.53% | |
| Form 6-K NATIONAL STEEL CO For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | +0.27% | +1.08% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.29% | -5.78% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.29% | +1.72% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +0.69% | -3.27% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +0.47% | +0.00% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -0.38% | -3.03% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +1.10% | -3.68% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -0.76% | -3.47% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +4.32% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -2.00% | |
| Form SD NATIONAL STEEL CO | SEC filing · Form SD | SEC EDGAR | -0.47% | -3.65% | |
| Form 6-K NATIONAL STEEL CO For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | +0.64% | +3.25% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -0.90% | -4.82% | |
| Form 6-K NATIONAL STEEL CO For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | -0.90% | -4.82% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -1.76% | |
| Form 20-F NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.00% | -1.76% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -0.61% | -3.03% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.29% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -0.65% | -0.96% | |
| Form 6-K NATIONAL STEEL CO For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | -1.43% | -0.71% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.34% | -0.69% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.26% | +1.04% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -0.26% | -3.14% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | -0.60% | +1.63% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.25% | -0.99% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -1.06% | +1.59% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.54% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -1.36% | +2.42% | |
| Form 6-K/A NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -0.95% | -0.95% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | +0.47% | +1.44% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | -0.46% | +0.00% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +0.67% | +1.34% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | -0.23% | -2.26% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +0.45% | +0.89% | |
| Form 6-K NATIONAL STEEL CO For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +0.65% | -1.63% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | — | -1.65% | |
| Form 6-K NATIONAL STEEL CO For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | +0.85% | +2.54% | |
| Form SD NATIONAL STEEL CO | SEC filing · Form SD | SEC EDGAR | +0.41% | +0.00% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -0.36% | -1.45% | |
| Form 6-K NATIONAL STEEL CO For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.36% | |
| Form 20-F NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.18% | -0.37% | |
| Form 6-K NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -0.37% | +0.00% | |
| Form 20-F/A NATIONAL STEEL CO For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.90% | +0.00% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SID section they belong to.
Where else SID is measured.
SID earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Neptune Insurance Holdings Inc. Class A (NP) | 87 | -0.29% | 42% |
| Perseus Mining Ltd (PRU_TSE) | 87 | 0.00% | 39% |
| First Majestic Silver Corp (FR_TSE) | 86 | +0.24% | 53% |
| LEADING EDGE MATERIALS CO (LEMIF) | 86 | 0.00% | 44% |
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 Companhia Siderurgica Nacional S.A.'s median reaction calculated?
Every labeled SID 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 87 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. 41% of SID'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 SID'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.