Companhia de Saneamento Básico do Estado de São Paulo - SABESP
Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SBS · as of Mar 31, 2025
Ownership Breakdown
197
Institutional Holders
▲ 10 vs Q4
$1.22B
Total Inst. Value
▲ $204.80M vs Q4
3.42B
Shares Outstanding
freeFloat 100.00%
68.59M
13F Shares Held
▼ 2.65M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
SBS largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
IMPAX ASSET MANAGEMENT GROUP PLC water supply | 10.84M | 1.59% | 1.59% | $193.00B | Apr 29, 2025 | ▼ 2.68M |
DEUTSCHE BANK AG\ water supply | 6.16M | 90.18% | 90.18% | $110.09B | May 9, 2025 | ▼ 70.3K |
AMUNDI water supply | 5.88M | 86.04% | 86.04% | $106.25B | May 15, 2025 | ▼ 872.0K |
BLACKROCK, INC. water supply | 3.37M | 49.27% | 49.27% | $60.15B | May 2, 2025 | ▲ 142.3K |
CITIGROUP INC water supply | 2.47M | 36.19% | 36.19% | $44.17B | May 12, 2025 | ▲ 830.9K |
MACKENZIE FINANCIAL CORP water supply | 2.39M | 34.99% | 34.99% | $42.71B | May 7, 2025 | ▼ 599.5K |
LETKO, BROSSEAU & ASSOCIATES INC water supply | 2.35M | 34.42% | 34.42% | $42.01B | May 8, 2025 | ▼ 432.5K |
MORGAN STANLEY water supply | 2.34M | 34.23% | 34.23% | $41.79B | May 15, 2025 | ▲ 667.7K |
VANGUARD GROUP INC water supply | 2.05M | 29.98% | 29.98% | $36.60B | May 9, 2025 | ▼ 109 |
BANK OF AMERICA CORP /DE/ water supply | 2.04M | 29.78% | 29.78% | $36.35B | May 15, 2025 | ▲ 1.54M |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
24
Increased
+5.59M shares4
New Positions
first time holders20
Decreased
−8.05M shares0
Sold Out
fully exitedNet shares change (top 50)
2.45M
+5.59M / −8.05M
Net new holders
+8
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
SBS insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Tavares de Sousa Roberval Engineering Officer | May 25, 2026 | Sale | 5,900 | $28.81 | $170.0K | 76 | Form 4 ↗ |
Tavares de Sousa Samanta I.S. Inst. Rel. & Sustain. Officer | May 21, 2026 | Sale | 5,700 | $28.61 | $163.1K | 43 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) is primarily owned by institutional investors, who hold approximately 2.0% of total shares outstanding. Company insiders own approximately 0.00%, while retail and public investors account for the remaining 97.99%.
The largest institutional shareholder of Companhia de Saneamento Básico do Estado de São Paulo - SABESP is IMPAX ASSET MANAGEMENT GROUP PLC, holding approximately 10.84 million shares — equal to 1.59% of outstanding shares — as of March 31, 2025.
A total of 197 institutional investors currently hold SBS stock, with a combined institutional value of approximately $1.22 billion as of the most recent 13F filing period.
Frequently asked questions
SBS ownershipCompanhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) is primarily owned by institutional investors, who hold approximately 2.0% of shares. The largest shareholder is IMPAX ASSET MANAGEMENT GROUP PLC with a 1.59% stake. Company insiders hold 0.00%. Data sourced from SEC Form 13F as of March 31, 2025.