American Water Works Company, Inc.
MX ˙ BMV ˙ US0304201033
SecurityMX:AWK / American Water Works Company, Inc.
InstitutionVontobel Holding Ltd.
Latest Disclosed Ownership455,895 shares
Latest Disclosed Value $ 62,042,750
Vontobel Holding Ltd. reports 2.87% decrease in ownership of AWK / American Water Works Company, Inc.

On May 8, 2026 - Vontobel Holding Ltd. filed a 13F-HR form disclosing ownership of 455,895 shares of American Water Works Company, Inc. (MX:AWK) valued at $62,042,750 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 469,380 shares of American Water Works Company, Inc.. This represents a change in shares of -2.87% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-08 2026-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 455,895 -13,485 -2.87 62,043 1.29 0.2133
2026-02-13 2025-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 469,380 1,683 0.36 61,254 -5.90 0.1929
2025-10-15 2025-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 467,697 31,342 7.18 65,099 7.24 0.1966
2025-07-23 2025-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 436,355 -20,307 -4.45 60,701 -9.89 0.1934
2025-04-28 2025-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 456,662 -37,939 -7.67 67,367 9.41 0.2456
2025-01-30 2024-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 494,601 -3,382 -0.68 61,573 -15.45 0.2107
2024-10-16 2024-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 497,983 35,752 7.73 72,825 21.98 0.2351
2024-08-13 2024-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 462,231 28,315 6.53 59,702 12.58 0.1939
2024-05-10 2024-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 433,916 -49,401 -10.22 53,029 -16.87 0.4240
2024-06-04 2023-12-31 13F/A-1 AMERICAN WTR WKS CO INC COM 030420103 483,317 -85,288 -15.00 63,793 -9.40 0.5343
2024-01-30 2023-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 927,457 -109,506 122,415 0.6147
2024-06-04 2023-09-30 13F/A-1 AMERICAN WTR WKS CO INC COM 030420103 568,605 11,602 2.08 70,410 -11.45 0.6502
2023-10-11 2023-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 1,036,963 17,183 128,407 0.7162
2024-06-04 2023-06-30 13F/A-1 AMERICAN WTR WKS CO INC COM 030420103 557,003 22,305 4.17 79,512 1.51 0.6976
2023-07-24 2023-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 1,019,780 485,082 145,574 0.7722
2024-06-04 2023-03-31 13F/A-1 AMERICAN WTR WKS CO INC COM 030420103 534,698 15,271 2.94 78,328 -1.52 0.7288
2023-04-12 2023-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 972,992 453,565 142,534 0.8108
2023-02-14 2022-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 519,427 5,099 0.99 79,535 16.09 0.8027
2022-11-04 2022-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 514,328 -70,117 -12.00 68,508 -19.61 0.7999
2022-07-27 2022-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 584,445 51,637 9.69 85,223 -3.56 0.9213
2022-05-13 2022-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 532,808 1,679 0.32 88,366 -11.52 0.7637
2022-02-14 2021-12-31 13F/A-1 AMERICAN WTR WKS CO INC COM 030420103 531,129 27,000 5.36 99,868 17.19 0.8299
2022-02-10 2021-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 504,129 0 85,218 0.3235
2021-10-29 2021-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 504,129 43,446 9.43 85,218 18.97 0.7517
2021-08-06 2021-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 460,683 62,240 15.62 71,627 19.91 0.6189
2021-05-11 2021-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 398,443 71,081 21.71 59,735 12.49 0.4428
2021-02-12 2020-12-31 13F/A-1 AMERICAN WTR WKS CO INC COM 030420103 327,362 327,362 53,104 0.3481
2021-02-12 2020-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 327,362 53,104 0.3481
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.