American Water Works Company, Inc.
MX ˙ BMV ˙ US0304201033
SecurityMX:AWK / American Water Works Company, Inc.
InstitutionNissay Asset Management Corp /japan/ /adv
Latest Disclosed Ownership25,388 shares
Latest Disclosed Value $ 3,455,053
Nissay Asset Management Corp /japan/ /adv reports 1.42% increase in ownership of AWK / American Water Works Company, Inc.

On May 15, 2026 - Nissay Asset Management Corp /japan/ /adv filed a 13F-HR form disclosing ownership of 25,388 shares of American Water Works Company, Inc. (MX:AWK) valued at $3,455,053 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 25,033 shares of American Water Works Company, Inc.. This represents a change in shares of 1.42% 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.

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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)
2026-05-15 2026-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 25,388 355 1.42 3,455 5.79 0.0183
2026-02-17 2025-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 25,033 -3,798 -13.17 3,267 -18.59 0.0170
2025-11-14 2025-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 28,831 -225,507 -88.66 4,013 -88.66 0.0222
2025-08-14 2025-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 254,338 -107,949 -29.80 35,381 -33.80 0.2071
2025-05-15 2025-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 362,287 338,812 1,443.29 53,445 1,717.21 0.3473
2025-02-14 2024-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 23,475 221 0.95 2,941 -13.50 0.0179
2024-11-14 2024-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 23,254 675 2.99 3,401 16.60 0.0215
2024-08-14 2024-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 22,579 630 2.87 2,916 8.72 0.0193
2024-05-15 2024-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 21,949 416 1.93 2,682 -5.63 0.0186
2024-02-14 2023-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 21,533 -303,035 -93.37 2,842 -92.93 0.0229
2023-11-14 2023-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 324,568 -4,685 -1.42 40,191 -14.49 0.3563
2023-08-14 2023-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 329,253 155,530 89.53 47,001 84.69 0.4054
2023-05-15 2023-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 173,723 -108,592 -38.46 25,449 -40.86 0.2273
2023-02-14 2022-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 282,315 -119,619 -29.76 43,030 -17.75 0.4113
2022-11-14 2022-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 401,934 -108,497 -21.26 52,316 -31.11 0.5493
2022-08-15 2022-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 510,431 -61,047 -10.68 75,937 -19.73 0.7559
2022-05-16 2022-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 571,478 350,395 158.49 94,597 126.56 0.8240
2022-02-14 2021-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 221,083 22,052 11.08 41,754 24.11 0.3199
2021-11-10 2021-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 199,031 -1,471 -0.73 33,644 8.87 0.2851
2021-08-13 2021-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 200,502 324 0.16 30,903 2.97 0.2713
2021-05-11 2021-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 200,178 18,341 10.09 30,011 7.54 0.2958
2021-02-08 2020-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 181,837 -113,310 -38.39 27,907 -34.74 0.4196
2020-10-20 2020-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 295,147 62,174 26.69 42,761 42.66 0.7224
2020-07-27 2020-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 232,973 17,858 8.30 29,974 16.54 0.5817
2020-05-05 2020-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 215,115 73,567 51.97 25,719 47.90 0.6548
2020-02-14 2019-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 141,548 27,576 24.20 17,389 22.81 0.3865
2019-11-14 2019-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 113,972 -44,832 -28.23 14,159 -23.14 0.3504
2019-08-07 2019-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 158,804 35,887 29.20 18,421 43.75 0.4657
2019-05-03 2019-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 122,917 4,825 4.09 12,815 19.55 0.3386
2019-02-06 2018-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 118,092 -7,989 -6.34 10,719 -3.35 0.3266
2018-10-30 2018-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 126,081 4,597 3.78 11,091 6.93 0.2984
2018-08-08 2018-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 121,484 43,128 55.04 10,372 61.18 0.3035
2018-05-14 2018-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 78,356 -4,680 -5.64 6,435 -15.30 0.2011
2018-02-14 2017-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 83,036 83,036 7,597 0.2314
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.