COMPANHIA DE SANEAMENTO BASI SBS
SPONSORED ADR · ADR · CUSIP 20441A102 · ISIN US20441A1025
Brazilian basic sanitation company
- SectorUtilities
- IndustryWater Supply
- HeadquartersSão Paulo, Brazil
- Founded1973
- Websitesabesp.com.br
- FilingsSEC EDGAR
Q1 2026 share counts are adjusted for a 5-for-1 stock split, so holders aren't shown as buying or selling because of it.
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.2m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $5.92. Options: 3 managers hold calls ($518.1k notional), 0 hold puts (—).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 143 |
| Q4 2022 | 144 |
| Q1 2023 | 141 |
| Q2 2023 | 142 |
| Q3 2023 | 149 |
| Q4 2023 | 162 |
| Q1 2024 | 164 |
| Q2 2024 | 172 |
| Q3 2024 | 188 |
| Q4 2024 | 188 |
| Q1 2025 | 198 |
| Q2 2025 | 202 |
| Q3 2025 | 218 |
| Q4 2025 | 227 |
| Q1 2026 | 248 |
| Q2 2026 | 299 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 120 | 49 |
| Q4 2024 | 87 | 89 |
| Q1 2025 | 95 | 84 |
| Q2 2025 | 116 | 75 |
| Q3 2025 | 115 | 95 |
| Q4 2025 | 150 | 81 |
| Q1 2026 | 165 | 92 |
| Q2 2026 | 171 | 133 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $2.7m | $659.6k | 0.24 |
| Q4 2025 | $231.0k | $622.5k | 2.70 |
| Q1 2026 | $936.2k | $244.1k | 0.26 |
| Q2 2026 | $518.1k | $0 | 0.00 |
Biggest buyers
| Impax Asset Management Group plc | Added | +18.6m |
| ROYAL LONDON ASSET MANAGEMENT LTD | Added | +7.3m |
| WCM INVESTMENT MANAGEMENT, LLC | Added | +4.9m |
| UBS Group AG | Added | +4.9m |
| Northwest & Ethical Investments L.P. | New | +3.6m |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +2.0m |
| JANE STREET GROUP, LLC | Added | +1.9m |
| Pictet Asset Management Holding SA | Added | +1.5m |
| WEXFORD CAPITAL LP | New | +1.3m |
| Itau Unibanco Holding S.A. | Added | +1.2m |
Biggest sellers
| MANNING & NAPIER ADVISORS LLC | Reduced | -11.7m |
| Allianz Asset Management GmbH | Reduced | -3.8m |
| GOLDMAN SACHS GROUP INC | Reduced | -3.4m |
| BANK OF AMERICA CORP /DE/ | Reduced | -2.7m |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -1.1m |
| ABN AMRO INVESTMENT SOLUTIONS | Sold out | -1.1m |
| ENVESTNET ASSET MANAGEMENT INC | Reduced | -997.8k |
| ALLIANCEBERNSTEIN L.P. | Reduced | -933.9k |
| MARSHALL WACE, LLP | Reduced | -862.3k |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO | Reduced | -835.0k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $466.1k80.6k shares |
| SIMPLEX TRADING, LLC | Reduced | $48.6k8.4k shares |
| GROUP ONE TRADING LLC | Reduced | $3.5k600 shares |
Biggest puts
| None |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 3 | $107.7k | — |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-06-15 | Szlak Daniel Chief Financial Officer | Sold | $41.3k7.4k shares |
| 2026-05-25 | Tavares de Sousa Roberval Engineering Officer | Sold | $33.9k5.9k shares |
| 2026-05-21 | Tavares de Sousa Samanta I.S. Inst. Rel. & Sustain. Officer | Sold | $32.6k5.7k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| Impax Asset Management Group plc 1.97% of their portfolio | 52.3m $302.4m | Added +18.6m |
| BlackRock, Inc. 0.00% of their portfolio | 29.9m $173.1m | Reduced -518.5k |
| Amundi 0.04% of their portfolio | 26.1m $150.9m | Reduced -146.3k |
| ROYAL LONDON ASSET MANAGEMENT LTD 0.22% of their portfolio | 20.6m $118.8m | Added +7.3m |
| DEUTSCHE BANK AG\ 0.03% of their portfolio | 19.2m $110.9m | Added +675.8k |
| WCM INVESTMENT MANAGEMENT, LLC 0.17% of their portfolio | 15.9m $92.5m | Added +4.9m |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 12.3m $71.0m | Added +2.0m |
| LETKO, BROSSEAU & ASSOCIATES INC 1.03% of their portfolio | 12.1m $70.0m | Added +371.5k |
| UBS Group AG 0.01% of their portfolio | 12.0m $69.6m | Added +4.9m |
| MACKENZIE FINANCIAL CORP 0.06% of their portfolio | 11.0m $63.8m | Added +196.9k |
| MORGAN STANLEY 0.00% of their portfolio | 9.9m $57.0m | Added +459.2k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 9.4m $54.3m | Unchanged |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 8.5m $49.3m | Reduced -111.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 7.9m $45.4m | Reduced -51.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.06% of their portfolio | 7.5m $43.6m | Reduced -1.1m |
| NORTHERN TRUST CORP 0.00% of their portfolio | 7.4m $42.7m | Reduced -638.0k |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO 0.35% of their portfolio | 6.4m $37.0m | Reduced -835.0k |
| Perpetual Ltd 0.52% of their portfolio | 6.3m $36.6m | Added +2.1k |
| ASSETMARK, INC 0.06% of their portfolio | 6.1m $35.1m | Added +613.6k |
| STRS OHIO 0.12% of their portfolio | 5.7m $33.0m | Reduced -440.0k |
| Legal & General Group Plc 0.01% of their portfolio | 5.1m $29.3m | Added +155.8k |
| Itau Unibanco Holding S.A. 0.49% of their portfolio | 4.4m $25.0m | Added +1.2m |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 4.1m $23.6m | Reduced -66.0k |
| Pictet Asset Management Holding SA 0.02% of their portfolio | 4.0m $22.9m | Added +1.5m |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 3.7m $21.4m | Added +82.0k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 3.6m $20.7m | Added +1.9m |
| Northwest & Ethical Investments L.P. 0.48% of their portfolio | 3.6m $20.6m | New |
| Invesco Ltd. 0.00% of their portfolio | 3.4m $19.8m | Reduced -670.9k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.01% of their portfolio | 3.2m $18.5m | Added +153.7k |
| Maryland State Retirement & Pension System 0.29% of their portfolio | 2.9m $16.7m | Added +754.7k |
| Capital Wealth Planning, LLC 0.08% of their portfolio | 2.9m $16.5m | Reduced -708.2k |
| STATE STREET CORP 0.00% of their portfolio | 2.6m $14.9m | Added +111.5k |
| HSBC HOLDINGS PLC 0.01% of their portfolio | 2.1m $12.1m | Reduced -18.9k |
| CANADA LIFE ASSURANCE Co 0.02% of their portfolio | 1.9m $10.7m | Added +120.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 1.8m $10.6m | Reduced -2.7m |
| MANNING & NAPIER ADVISORS LLC 0.11% of their portfolio | 1.5m $8.5m | Reduced -11.7m |
| WEXFORD CAPITAL LP 1.02% of their portfolio | 1.3m $7.4m | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.01% of their portfolio | 1.2m $6.7m | Added +1.1m |
| Handelsbanken Fonder AB 0.02% of their portfolio | 1.1m $6.6m | Added +195.1k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 1.1m $34.3m | Reduced -933.9k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 1.1m $6.3m | Reduced -3.4m |
| Gradient Investments LLC 0.08% of their portfolio | 985.0k $5.7m | Added +43.8k |
| Boston Common Asset Management, LLC 0.33% of their portfolio | 968.9k $5.6m | New |
| Allianz Asset Management GmbH 0.03% of their portfolio | 952.4k $29.1m | Reduced -3.8m |
| Man Group plc 0.01% of their portfolio | 930.9k $5.4m | Added +59.7k |
| CITIGROUP INC 0.00% of their portfolio | 912.0k $5.3m | Reduced -198.6k |
| US BANCORP \DE\ 0.01% of their portfolio | 849.5k $4.9m | Reduced -60.4k |
| BTG Pactual Asset Management US LLC 0.36% of their portfolio | 827.2k $4.8m | Added +31.2k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 789.2k $4.6m | Reduced -83.6k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 757.0k $4.4m | Added +19.4k |
| Groupe la Francaise 0.05% of their portfolio | 750.8k $4.3m | Added +329.1k |
| Raiffeisen Bank International AG 0.04% of their portfolio | 650.0k $3.8m | Added +200.0k |
| SCHWARTZ INVESTMENT COUNSEL INC 0.12% of their portfolio | 630.6k $3.6m | Added +1.0k |
| Federation des caisses Desjardins du Quebec 0.01% of their portfolio | 589.3k $3.4m | Added +1.6k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 536.1k $3.1m | Added +13.6k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 520.6k $3.0m | Reduced -696.7k |
| Generali Investments CEE, investicni spolecnost, a.s. 0.13% of their portfolio | 474.4k $2.7m | Added +75.5k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 448.1k $2.6m | Reduced -13.5k |
| LPL Financial LLC 0.00% of their portfolio | 430.5k $2.5m | Reduced -113.1k |
| NEUBERGER BERMAN GROUP LLC 0.00% of their portfolio | 413.7k $2.4m | Added +89.2k |
| Formuepleje A/S 0.19% of their portfolio | 410.7k $2.4m | New |
| PINEBRIDGE INVESTMENTS LLC 0.02% of their portfolio | 405.8k $2.3m | Added +17.4k |
| Lifestyle Asset Management, Inc. 0.62% of their portfolio | 401.5k $2.3m | Added +7.0k |
| Vontobel Holding Ltd. 0.01% of their portfolio | 391.9k $2.3m | Added +6.2k |
| EXCHANGE TRADED CONCEPTS, LLC 0.01% of their portfolio | 388.4k $2.2m | Added +8.8k |
| B. Metzler seel. Sohn & Co. AG 0.02% of their portfolio | 383.2k $2.2m | Reduced -19.0k |
| NS Partners Ltd 0.09% of their portfolio | 364.4k $2.1m | Reduced -18.3k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 354.6k $2.0m | Added +75.9k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 352.7k $2.0m | Reduced -5.5k |
| SPX Gestao de Recursos Ltda 0.23% of their portfolio | 352.4k $2.0m | Reduced -537.3k |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 351.8k $2.0m | Reduced -108.1k |
| FMR LLC 0.00% of their portfolio | 340.0k $2.0m | Reduced -551.9k |
| Point Nemo Capital, LLC 0.98% of their portfolio | 333.3k $1.9m | Added +24.4k |
| Ativo Capital Management LLC 1.45% of their portfolio | 327.4k $1.9m | Reduced -37 |
| Daiwa Securities Group Inc. 0.00% of their portfolio | 294.7k $1.7m | Reduced -16.0k |
| Creative Planning 0.00% of their portfolio | 287.0k $1.7m | Added +61.3k |
| ProShare Advisors LLC 0.00% of their portfolio | 280.8k $1.6m | Added +84.0k |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 279.8k $1.6m | Reduced -14.4k |
| BAROMETER CAPITAL MANAGEMENT INC. 0.45% of their portfolio | 278.2k $1.6m | Added +35.1k |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 276.7k $1.6m | Reduced -31.7k |
| KBC Group NV 0.00% of their portfolio | 270.4k $1.6m | Added +18.6k |
| Robeco Institutional Asset Management B.V. 0.00% of their portfolio | 269.2k $1.6m | Reduced -177.7k |
| Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio | 268.5k $1.6m | Added +128.6k |
| CenterBook Partners LP 0.07% of their portfolio | 261.4k $1.5m | Reduced -117.5k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 246.5k $1.4m | Reduced -997.8k |
| Nuveen, LLC 0.00% of their portfolio | 243.7k $1.4m | New |
| Vanguard Personalized Indexing Management, LLC 0.01% of their portfolio | 243.2k $1.4m | Added +57.2k |
| Tidal Investments LLC 0.00% of their portfolio | 216.2k $1.2m | Added +72.4k |
| Atria Investments, Inc 0.01% of their portfolio | 208.3k $1.2m | Reduced -2.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 205.0k $1.2m | Reduced -26.5k |
| Metis Global Partners, LLC 0.03% of their portfolio | 200.4k $1.2m | Added +23.9k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 199.8k $1.2m | Added +39.6k |
| Vident Advisory, LLC 0.01% of their portfolio | 195.2k $1.1m | Reduced -2.8k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 193.0k $1.1m | Reduced -7.0k |
| Nykredit A/S 0.00% of their portfolio | 192.4k $1.1m | First filing |
| NORDEA INVESTMENT MANAGEMENT AB 0.00% of their portfolio | 188.8k $1.1m | Reduced -37.1k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 185.4k $1.1m | Added +20.2k |
| Corient Private Wealth LP 0.00% of their portfolio | 174.8k $1.0m | Reduced -8.0k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 173.6k $1.0m | Reduced -862.3k |
| Laird Norton Wetherby Trust Company, LLC 0.02% of their portfolio | 157.0k $907.7k | Reduced -3.6k |