$GGB stock is down 9% today. Here's what we see in our data.

$GGB stock has now fallen 9% today, according to our price data from Polygon. There has been approximately $56,129,185 of trading volume.

Here is what we see in our data on $GGB (you can track the company live on Quiver's $GGB stock page):

$GGB Insider Trading Activity

$GGB insiders have traded $GGB stock on the open market 18 times in the past 6 months. Of those trades, 1 have been purchases and 17 have been sales.

Here’s a breakdown of recent trading of $GGB stock by insiders over the last 6 months:

CUNHA GUSTAVO WERNECK DA (CEO and Board Member) has made 1 purchase buying 165,224 shares for an estimated $781,509 and 1 sale selling 88,000 shares for an estimated $396,000.
CHIA YUAN WANG has made 0 purchases and 4 sales selling 167,635 shares for an estimated $764,081.
ANDRE BIER GERDAU JOHANNPETER sold 99,200 shares for an estimated $490,048
CLAUDIO JOHANNPETER sold 85,607 shares for an estimated $422,898
RAFAEL GAMBOA LOPES sold 51,800 shares for an estimated $263,662
CLEMIR UHLEIN sold 38,276 shares for an estimated $172,624
MAURICIO METZ has made 0 purchases and 4 sales selling 18,000 shares for an estimated $86,230.
RAFAEL DORNELES JAPUR has made 0 purchases and 2 sales selling 15,000 shares for an estimated $74,750.
MARCOS ZILLES MATTIELLO sold 10,387 shares for an estimated $53,078
CESAR OBINO DA ROSA PERES (Officer) sold 8,000 shares for an estimated $36,800

To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

$GGB Hedge Fund Activity

We have seen 121 institutional investors add shares of $GGB stock to their portfolio, and 74 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

ACADIAN ASSET MANAGEMENT LLC added 35,631,834 shares (+273.2%) to their portfolio in Q2 2026, for an estimated $143,952,609
NINETY ONE UK LTD added 30,803,036 shares (+inf%) to their portfolio in Q3 2026, for an estimated $145,390,329
UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC added 23,936,662 shares (+1323.5%) to their portfolio in Q2 2026, for an estimated $96,704,114
BANK OF AMERICA CORP /DE/ removed 13,038,732 shares (-98.6%) from their portfolio in Q2 2026, for an estimated $52,676,477
TWO SIGMA INVESTMENTS, LP removed 10,456,483 shares (-40.5%) from their portfolio in Q2 2026, for an estimated $42,244,191
FMR LLC added 10,381,651 shares (+94757.7%) to their portfolio in Q2 2026, for an estimated $41,941,870
NINETY ONE NORTH AMERICA, INC. added 8,211,800 shares (+inf%) to their portfolio in Q3 2026, for an estimated $38,759,696

To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.

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You can track data on $GGB on Quiver Quantitative.

This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.