American Water Works Company, Inc.
MX ˙ BMV ˙ US0304201033
SecurityMX:AWK / American Water Works Company, Inc.
InstitutionSumitomo Life Insurance Co
Latest Disclosed Ownership10,405 shares
Latest Disclosed Value $ 1,416,016
Sumitomo Life Insurance Co reports 7.40% decrease in ownership of AWK / American Water Works Company, Inc.

On May 12, 2026 - Sumitomo Life Insurance Co filed a 13F-HR form disclosing ownership of 10,405 shares of American Water Works Company, Inc. (MX:AWK) valued at $1,416,016 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,236 shares of American Water Works Company, Inc.. This represents a change in shares of -7.40% 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)
2026-05-12 2026-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 10,405 -831 -7.40 1,416 -3.41 0.0333
2026-02-13 2025-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 11,236 47 0.42 1,466 -5.84 0.0402
2025-11-12 2025-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 11,189 2,856 34.27 1,557 34.34 0.0484
2025-08-05 2025-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 8,333 3,654 78.09 1,159 67.97 0.0786
2025-05-02 2025-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 4,679 70 1.52 690 20.42 0.0247
2025-01-23 2024-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 4,609 -176 -3.68 574 -18.03 0.0108
2024-10-16 2024-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 4,785 -49 -1.01 700 12.02 0.0137
2024-07-19 2024-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 4,834 -601 -11.06 624 -6.02 0.0144
2024-04-26 2024-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 5,435 -136 -2.44 664 -9.66 0.0172
2024-01-30 2023-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 5,571 -268 -4.59 735 1.66 0.0229
2023-10-23 2023-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 5,839 -85 -1.43 723 -14.44 0.0204
2023-07-20 2023-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 5,924 -563 -8.68 846 0.0372
2023-04-27 2023-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 6,487 -67 -1.02 1 0.0799
2023-01-18 2022-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 6,554 -294 -4.29 1 -100.00 0.0737
2022-10-31 2022-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 6,848 -520 -7.06 891 -18.70 0.0378
2022-07-22 2022-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 7,368 195 2.72 1,096 -7.67 0.0307
2022-04-27 2022-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 7,173 -264 -3.55 1,187 -15.52 0.0294
2022-02-04 2021-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 7,437 -198 -2.59 1,405 8.83 0.0334
2021-10-25 2021-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 7,635 -322 -4.05 1,291 5.30 0.0345
2021-07-20 2021-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 7,957 -1,209 -13.19 1,226 -10.77 0.0390
2021-04-27 2021-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 9,166 -378 -3.96 1,374 -6.21 0.0553
2021-02-05 2020-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 9,544 -1,254 -11.61 1,465 -6.33 0.0619
2020-10-29 2020-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 10,798 -454 -4.03 1,564 8.01 0.0728
2020-07-22 2020-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 11,252 -1,024 -8.34 1,448 -1.36 0.0776
2020-05-01 2020-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 12,276 121 1.00 1,468 -1.67 0.1045
2020-01-24 2019-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 12,155 719 6.29 1,493 5.07 0.1692
2019-10-24 2019-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 11,436 -1,313 -10.30 1,421 -3.92 0.1849
2019-07-26 2019-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 12,749 -6,693 -34.43 1,479 -27.04 0.1746
2019-04-17 2019-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 19,442 -2,104 -9.77 2,027 3.63 0.2725
2019-01-24 2018-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 21,546 521 2.48 1,956 5.73 0.2711
2018-10-18 2018-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 21,025 -358 -1.67 1,850 1.31 0.3670
2018-07-23 2018-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 21,383 863 4.21 1,826 8.37 0.2240
2018-04-27 2018-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 20,520 -904 -4.22 1,685 -14.03 0.2228
2018-02-01 2017-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 21,424 -1,041 -4.63 1,960 7.81 0.2459
2017-10-17 2017-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 22,465 -414 -1.81 1,818 1.96 0.2316
2017-07-27 2017-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 22,879 14,559 174.99 1,783 175.58 0.2326
2017-04-26 2017-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 8,320 -516 -5.84 647 1.25 0.0915
2017-01-27 2016-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 8,836 252 2.94 639 -0.47 0.0911
2016-10-25 2016-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 8,584 -22,958 -72.79 642 -75.92 0.0953
2016-07-15 2016-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 31,542 -1,111 -3.40 2,666 18.44 0.3653
2016-04-26 2016-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 32,653 -989 -2.94 2,251 11.99 0.2928
2016-01-21 2015-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 33,642 -794 -2.31 2,010 5.96 0.2537
2015-10-22 2015-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 34,436 -875 -2.48 1,897 10.48 0.2517
2015-07-29 2015-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 35,311 -4,371 -11.02 1,717 -20.18 0.2092
2015-04-30 2015-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 39,682 39,682 0.00 2,151 0.2372
2015-02-04 2014-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 0 -46,330 -100.00 0 -100.00
2014-11-04 2014-09-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 46,330 -1,244 -2.61 2,234 -5.06 0.2184
2014-07-30 2014-06-30 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 47,574 261 0.55 2,353 9.54 0.2250
2014-05-02 2014-03-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 47,313 27,137 134.50 2,148 151.82 0.2085
2014-02-07 2013-12-31 13F AMERICAN WTR WKS CO INC NEW COM Common 030420103 20,176 20,176 853 0.0768
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.