Why Sabesp (SBS) Stock Is Down Today

Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) is down 25.3% today. Here is some analysis on what might have caused this price movement.

Analysis: The sharp drop appears to be driven mainly by a broad selloff in Brazilian equities after Brazil’s presidential election result triggered a steep decline in the real and a risk-off move across the country’s ADRs. I could not find a company-specific negative announcement large enough on its own to explain a one-day move of this size, though Sabesp’s pending EMAE share merger may have added some event-driven uncertainty.

Details:

Brazilian stocks and the real sold off hard on October 26, with trading on Brazil’s exchange briefly halted after a steep market decline, signaling a macro shock rather than an isolated company event.

Overnight trading in New York showed widespread losses across Brazilian ADRs, reinforcing that investors were cutting exposure to Brazil broadly.

Sabesp’s most recent 6-K outlined the final timetable for the EMAE share-for-share merger, including October 23 as EMAE’s last trading day and October 27 as the planned share credit date.

Sabesp’s ADRs were trading near $4.75 intraday, down roughly 25.8% from the prior close, with heavy volume, which fits a broad de-risking move in Brazil-linked assets.

Sources:

SEC, MarketScreener, Exame

Disclaimer: This price movement analysis was generated with the help of AI. Please double-check the information provided for mistakes.

$SBS Insider Trading Activity

$SBS insiders have traded $SBS stock on the open market 4 times in the past 6 months. Of those trades, 0 have been purchases and 4 have been sales.

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

DANIEL SZLAK (Chief Financial Officer) has made 0 purchases and 2 sales selling 7,381 shares for an estimated $208,882.
DE SOUSA ROBERVAL TAVARES (Engineering Officer) sold 5,900 shares for an estimated $169,979
DE SOUSA SAMANTA I.S. TAVARES (Inst. Rel. & Sustain. Officer) sold 5,700 shares for an estimated $163,077

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.

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$SBS Hedge Fund Activity

We have seen 162 institutional investors add shares of $SBS stock to their portfolio, and 122 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

IMPAX ASSET MANAGEMENT GROUP PLC added 18,612,609 shares (+55.2%) to their portfolio in Q2 2026, for an estimated $107,580,880
MANNING & NAPIER ADVISORS LLC removed 11,660,438 shares (-88.8%) from their portfolio in Q2 2026, for an estimated $67,397,331
ROYAL LONDON ASSET MANAGEMENT LTD added 7,269,799 shares (+54.7%) to their portfolio in Q2 2026, for an estimated $42,019,438
WCM INVESTMENT MANAGEMENT, LLC added 4,921,385 shares (+44.8%) to their portfolio in Q2 2026, for an estimated $28,445,605
UBS GROUP AG added 4,878,041 shares (+68.0%) to their portfolio in Q2 2026, for an estimated $28,195,076
NORTHWEST & ETHICAL INVESTMENTS L.P. added 3,570,566 shares (+inf%) to their portfolio in Q2 2026, for an estimated $20,637,871
GOLDMAN SACHS GROUP INC removed 3,368,814 shares (-75.4%) from their portfolio in Q2 2026, for an estimated $19,471,744

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.

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.