DOSSIER · 13F Holders · Q3 2026Utilities · Water Supply
SBS

COMPANHIA DE SANEAMENTO BASI

310 institutions still hold COMPANHIA DE SANEAMENTO BASI as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 20441A102·Water Supply·310 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$1.9B
visible holders
Holders
310
filers reporting
Concentration
14.83%
Impax Asset Management Group plc #1
top holder share
AI Holders Summary · Q3 2026

310 institutions reported SBS in Q3 2026. Impax Asset Management Group plc leads at 14.8% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Impax Asset Management Group plc
CIK 0001749768
$275M51.7M2.11%Q3 2026
02
BlackRock, Inc.
CIK 0002012383
$124M23.4M0.00%Q3 2026
03
ROYAL LONDON ASSET MANAGEMENT LTD
CIK 0000863748
$111M20.9M0.20%Q3 2026
04
DEUTSCHE BANK AG\
CIK 0000948046
$103M19.3M0.03%Q3 2026
05
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$71M12.3M0.01%Q2 2026
06
LETKO, BROSSEAU & ASSOCIATES INC
CIK 0001297496
$69M13.0M1.00%Q3 2026
07
WCM INVESTMENT MANAGEMENT, LLC
CIK 0001061186
$68M13.1M0.11%Q3 2026
08
MACKENZIE FINANCIAL CORP
CIK 0000919859
$63M11.8M0.07%Q3 2026
09
MORGAN STANLEY
CIK 0000895421
$53M10.0M0.00%Q3 2026
10
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$50M9.4M0.00%Q3 2026
11
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
CIK 0000861177
$45M7.9M0.01%Q2 2026
12
NORTHERN TRUST CORP
CIK 0000073124· Index
$43M7.4M0.01%Q2 2026
13
Amundi
CIK 0001330387
$41M7.7M0.01%Q3 2026
14
Perpetual Ltd
CIK 0001647273
$33M6.3M0.51%Q3 2026
15
ASSETMARK, INC
CIK 0001344551
$33M6.3M0.06%Q3 2026
16
DUFF & PHELPS INVESTMENT MANAGEMENT CO
CIK 0000765443
$31M5.9M0.32%Q3 2026
17
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$30M5.7M0.01%Q3 2026
18
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$30M5.7M0.04%Q3 2026
19
UBS Group AG
CIK 0001610520
$30M5.6M0.00%Q3 2026
20
Legal & General Group Plc
CIK 0000764068
$29M5.1M0.01%Q2 2026
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Insiders at COMPANHIA DE SANEAMENTO BASI
Szlak Daniel →Tavares De Sousa Roberval →Tavares De Sousa Samanta I.S. →