American Water Works Company, Inc.
US ˙ NYSE ˙ US0304201033

SecurityAWK / American Water Works Company, Inc.
InstitutionAviva Plc
Latest Disclosed Ownership238,429 shares
Latest Disclosed Value $ 32,447,803
Aviva Plc reports 45.67% increase in ownership of AWK / American Water Works Company, Inc.

On May 14, 2026 - Aviva Plc filed a 13F-HR form disclosing ownership of 238,429 shares of American Water Works Company, Inc. (US:AWK) valued at $32,447,803 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 163,675 shares of American Water Works Company, Inc.. This represents a change in shares of 45.67% during the quarter. The current value of the position is $29,519,894 USD.

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)
2026-05-14 2026-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 238,429 74,754 45.67 32,448 51.91 0.0544
2026-02-12 2025-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 163,675 8,703 5.62 21,360 -0.98 0.0360
2025-11-13 2025-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 154,972 9,139 6.27 21,571 6.33 0.0392
2025-08-07 2025-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 145,833 9,478 6.95 20,287 0.85 0.0419
2025-05-15 2025-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 136,355 2,082 1.55 20,115 20.34 0.0485
2025-02-13 2024-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 134,273 -85,355 -38.86 16,716 -47.96 0.0434
2024-11-14 2024-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 219,628 5,207 2.43 32,118 15.97 0.0832
2024-08-02 2024-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 214,421 31,581 17.27 27,695 23.94 0.0768
2024-05-14 2024-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 182,840 52,754 40.55 22,345 30.13 0.0736
2024-02-09 2023-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 130,086 -77,712 -37.40 17,170 -33.27 0.0616
2023-11-13 2023-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 207,798 8,365 4.19 25,732 -9.62 0.1082
2023-08-10 2023-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 199,433 53,140 36.32 28,469 32.85 0.1159
2023-05-12 2023-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 146,293 21,001 16.76 21,430 12.22 0.0970
2023-02-14 2022-12-31 13F/A-2 AMERICAN WTR WKS CO INC NE COM 030420103 125,292 22,540 21.94 19,097 42.79 0.0939
2023-02-10 2022-12-31 13F/A-1 AMERICAN WTR WKS CO INC NE COM 030420103 125,292 22,540 19,097 0.0911
2023-02-09 2022-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 125,292 22,540 19 0.0918
2022-11-14 2022-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 102,752 1,714 1.70 13,374 -11.02 0.0771
2022-08-04 2022-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 101,038 22,529 28.70 15,031 15.66 0.0800
2022-05-13 2022-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 78,509 19,512 33.07 12,996 16.64 0.0650
2022-02-10 2021-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 58,997 3,487 6.28 11,142 18.75 0.0467
2021-11-12 2021-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 55,510 -7,503 -11.91 9,383 -3.39 0.0419
2021-08-10 2021-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 63,013 2,415 3.99 9,712 6.90 0.0426
2021-05-13 2021-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 60,598 44 0.07 9,085 -2.24 0.0444
2021-02-10 2020-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 60,554 2,055 3.51 9,293 9.65 0.0483
2020-11-12 2020-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 58,499 -1,815 -3.01 8,475 9.21 0.0500
2020-08-13 2020-06-30 13F/A-1 AMERICAN WTR WKS CO INC NE COM 030420103 60,314 -3,120 -4.92 7,760 2.32 0.0484
2020-08-13 2020-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 60,314 -3,120 7,760 23,492.8483
2020-05-14 2020-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 63,434 -15,894 -20.04 7,584 -22.18 0.0556
2020-02-10 2019-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 79,328 2,685 3.50 9,745 2.34 0.0590
2019-11-12 2019-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 76,643 -3,002 -3.77 9,522 3.07 0.0645
2019-07-30 2019-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 79,645 11,321 16.57 9,238 29.69 0.0635
2019-05-14 2019-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 68,324 535 0.79 7,123 15.76 0.0478
2019-02-12 2018-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 67,789 -18,819 -21.73 6,153 -19.24 0.0459
2018-11-13 2018-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 86,608 -3,167 -3.53 7,619 -0.60 0.0418
2018-08-01 2018-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 89,775 -2,037 -2.22 7,665 1.64 0.0452
2018-05-14 2018-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 91,812 -7,200 -7.27 7,541 -16.76 0.0461
2018-02-13 2017-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 99,012 -14,104 -12.47 9,059 -1.01 0.0513
2017-11-13 2017-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 113,116 2,120 1.91 9,151 5.76 0.0492
2017-08-07 2017-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 110,996 -150 -0.13 8,653 0.10 0.0484
2017-05-15 2017-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 111,146 -6,215 -5.30 8,644 1.78 0.0495
2017-02-13 2016-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 117,361 7,740 7.06 8,493 3.52 0.0507
2016-11-14 2016-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 109,621 2,812 2.63 8,204 -9.10 0.0512
2016-08-05 2016-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 106,809 15,852 17.43 9,025 43.94 0.0618
2016-05-12 2016-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 90,957 992 1.10 6,270 16.65 0.0466
2016-02-11 2015-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 89,965 -402 -0.44 5,375 8.00 0.0408
2015-11-12 2015-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 90,367 -3,409 -3.64 4,977 9.14 0.0412
2015-08-06 2015-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 93,776 -1,760 -1.84 4,560 -11.95 0.0323
2015-05-14 2015-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 95,536 95,536 0.00 5,179 0.0355
2015-02-05 2014-12-31 13F/A-1 AMERICAN WTR WKS CO INC NE COM 030420103 0 -73,694 -100.00 0 -100.00
2014-11-13 2014-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 73,694 1,320 1.82 3,554 -0.70 0.0281
2014-08-13 2014-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 72,374 -390 -0.54 3,579 8.36 0.0274
2014-05-14 2014-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 72,764 3,790 5.49 3,303 13.31 0.0268
2014-02-13 2013-12-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 68,974 2,351 3.53 2,915 6.00 0.0244
2013-11-13 2013-09-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 66,623 15,163 29.47 2,750 29.59 0.0241
2013-08-01 2013-06-30 13F AMERICAN WTR WKS CO INC NE COM 030420103 51,460 51,460 2,122 0.0215
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.