American Water Works Company, Inc.
MX ˙ BMV ˙ US0304201033
SecurityMX:AWK / American Water Works Company, Inc.
InstitutionPerennial Advisors, LLC
Latest Disclosed Ownership51,325 shares
Latest Disclosed Value $ 6,984,795
Perennial Advisors, LLC reports 4.47% increase in ownership of AWK / American Water Works Company, Inc.

On April 13, 2026 - Perennial Advisors, LLC filed a 13F-HR form disclosing ownership of 51,325 shares of American Water Works Company, Inc. (MX:AWK) valued at $6,984,795 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 49,127 shares of American Water Works Company, Inc.. This represents a change in shares of 4.47% 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)
2026-04-13 2026-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 51,325 2,198 4.47 6,985 8.94 1.1687
2026-01-12 2025-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 49,127 3,525 7.73 6,411 1.01 1.0749
2025-10-14 2025-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 45,602 858 1.92 6,347 1.98 1.0993
2025-07-15 2025-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 44,744 -40 -0.09 6,224 -5.78 1.1563
2025-04-14 2025-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 44,784 3,065 7.35 6,607 27.21 1.3178
2025-02-21 2024-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 41,719 2,647 6.77 5,194 2.91 1.1304
2024-07-23 2024-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 39,072 853 2.23 5,047 8.05 1.1312
2024-04-10 2024-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 38,219 1,780 4.88 4,671 -2.89 1.0863
2024-01-25 2023-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 36,439 801 2.25 4,810 8.97 1.1818
2023-10-17 2023-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 35,638 388 1.10 4,413 -12.30 1.1901
2023-08-01 2023-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 35,250 1,826 5.46 5,032 2.78 1.2827
2023-05-12 2023-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 33,424 -38 -0.11 4,896 -4.00 1.4011
2023-01-31 2022-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 33,462 -1,474 -4.22 5,100 12.16 1.6213
2022-11-09 2022-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 34,936 515 1.50 4,547 -11.21 1.4909
2022-08-09 2022-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 34,421 590 1.74 5,121 -8.55 1.5933
2022-04-27 2022-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 33,831 1,595 4.95 5,600 -8.02 1.4860
2022-02-08 2021-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 32,236 -18 -0.06 6,088 11.67 1.6406
2021-11-08 2021-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 32,254 362 1.14 5,452 10.90 1.6057
2021-08-13 2021-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 31,892 671 2.15 4,916 5.02 1.4270
2021-05-17 2021-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 31,221 583 1.90 4,681 -0.45 1.4726
2021-02-12 2020-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 30,638 295 0.97 4,702 6.96 1.6562
2020-11-16 2020-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 30,343 268 0.89 4,396 13.62 1.7991
2020-08-14 2020-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 30,075 1,598 5.61 3,869 13.63 1.6450
2020-05-19 2020-03-31 13F/A-1 AMERICAN WTR WKS CO INC COM 030420103 28,477 2,031 7.68 3,405 4.80 1.8969
2020-05-19 2020-03-31 13F AMERICAN WTR WKS COM 030420103 23,351 -3,095 1,690 1,403,199.9601
2020-01-23 2019-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 26,446 133 0.51 3,249 -0.61 1.5601
2019-11-05 2019-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 26,313 617 2.40 3,269 9.66 1.6937
2019-07-18 2019-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 25,696 -830 -3.13 2,981 7.77 1.5871
2019-04-30 2019-03-31 13F AMERICAN WTR WKS CO INC NE COM 030420103 26,526 290 1.11 2,766 16.17 1.5728
2019-01-29 2018-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 26,236 468 1.82 2,381 5.03 1.5416
2018-11-05 2018-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 25,768 65 0.25 2,267 3.33 1.3048
2018-08-10 2018-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 25,703 -594 -2.26 2,194 1.57 1.3527
2018-04-24 2018-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 26,297 -281 -1.06 2,160 -11.18 1.3633
2018-01-29 2017-12-31 13F AMERICAN WTR WKS COM 030420103 26,578 -246 -0.92 2,432 12.07 1.5098
2017-10-30 2017-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 26,824 1,013 3.92 2,170 7.85 1.4682
2017-07-31 2017-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 25,811 1,981 8.31 2,012 8.58 1.4601
2017-04-27 2017-03-31 13F AMERICAN WTR WKS COM 030420103 23,830 479 2.05 1,853 9.64 1.4264
2017-04-27 2016-12-31 13F/A-2 AMERICAN WTR WKS COM 030420103 23,351 23,351 1,690 1.4032
2017-04-27 2016-12-31 13F/A-1 AMERICAN WTR WKS COM 030420103 23,351 0 1,690 1.4941
2017-02-10 2016-12-31 13F AMERICAN WTR WKS CO INC N COM 030420103 37,839 2,738 1.7314
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.