Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) Institutional Ownership

Based on Q1 2026 13F filings, institutional ownership of Companhia de Saneamento Básico do Estado de São Paulo - SABESP stands at 11.5%, held across 242 reporting institutions.

Impax Asset Management Group plc is the largest reported institutional holder of SBS, with approximately 6,742,360 shares worth $0.21B as of Q1 2026.

Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of SBS, including RENAISSANCE TECHNOLOGIES LLC.

Our composite Smart Money Score for SBS is 63 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.

50 institutions opened new positions in SBS during Q1 2026, while 29 fully exited. 162 added to existing positions and 27 trimmed.

SBS institutional ownership rose by 2.86 percentage points quarter-over-quarter, with a net change of +21 holders.

The top 10 institutions account for 51.1% of all reported 13F value in SBS, and the top 25 account for 80.5%.

All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.