Companhia Siderurgica Nacional S.A. (SID) SEC filings

SID SEC filings moved a median of -0.59% by the close. SID SEC filings — 10-K, 10-Q, 8-K and the rest — each read against the price at its own news timestamp. Back to the SID overview →

64 measured SID SEC filing events.

Where these SID SEC filings landedvs 64 measured SID SEC filing reactions
SID SEC filingMiddle 50% · -2.05% to +0.54%Zero: 0.00%Median: -0.59%Median -0.59%-3.00%0+3.00%
Middle 50% of SID SEC filing reactions-2.05% to +0.54%
Median reaction (to close)-0.59%
Measured reactions64
Point-in-time · zero look-ahead

Half of the 64 SID SEC filing events with a measured close landed between -2.05% and +0.54%; 36% closed up.

DateHeadlineEvent5-minTo close
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-1.38%-0.78%
CSN announces its Annual Report on Form 20-F for the fiscal year ended December 31, 2025Press release+0.39%+0.00%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-4.82%-11.11%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K-4.82%-11.11%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K+0.00%+0.53%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K+0.27%+1.08%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.29%-5.78%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.29%+1.72%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K+0.69%-3.27%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K+0.47%+0.00%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K-0.38%-3.03%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K+1.10%-3.68%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K-0.76%-3.47%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K+0.00%+4.32%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K+0.00%-2.00%
Form SD NATIONAL STEEL COSEC filing · Form SD-0.47%-3.65%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K+0.64%+3.25%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K-0.90%-4.82%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K-0.90%-4.82%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K+0.00%-1.76%
Form 20-F NATIONAL STEEL CO For: Dec 31SEC filing · Form 20-F+0.00%-1.76%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K-0.61%-3.03%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.00%+0.29%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-0.65%-0.96%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K-1.43%-0.71%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.34%-0.69%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.26%+1.04%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-0.26%-3.14%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K-0.60%+1.63%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.25%-0.99%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-1.06%+1.59%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K+0.00%+0.54%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-1.36%+2.42%
Form 6-K/A NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-0.95%-0.95%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.47%+1.44%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K-0.46%+0.00%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K+0.67%+1.34%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K-0.23%-2.26%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K+0.45%+0.89%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K+0.65%-1.63%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K—-1.65%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K+0.85%+2.54%
Form SD NATIONAL STEEL COSEC filing · Form SD+0.41%+0.00%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K-0.36%-1.45%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K+0.00%+0.36%
Form 20-F NATIONAL STEEL CO For: Dec 31SEC filing · Form 20-F+0.18%-0.37%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-0.37%+0.00%
Form 20-F/A NATIONAL STEEL CO For: Dec 31SEC filing · Form 20-F+0.90%+0.00%
Form 6-K NATIONAL STEEL CO For: Jun 30SEC filing · Form 6-K-0.35%-1.06%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K+0.16%+0.33%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-1.20%-4.50%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K-0.28%-0.56%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K-0.56%-0.28%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K+0.28%+0.00%
Form 6-K NATIONAL STEEL CO For: Mar 31SEC filing · Form 6-K-0.28%-1.71%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K-0.25%+0.25%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K-0.28%+0.56%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.00%-2.27%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.30%+3.89%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.04%-0.61%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K-0.15%-0.76%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+1.50%+4.89%
Form 6-K NATIONAL STEEL CO For: Sep 30SEC filing · Form 6-K+1.50%+4.89%
Form 6-K NATIONAL STEEL CO For: Dec 31SEC filing · Form 6-K+0.87%-2.18%
That’s how SID usually reacts to SEC filings — get an email when it moves on news →
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Other Basic Materials names and their SEC filings

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. These are each name’s all-news baseline, not its SEC filings — that is what the link opens.