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

SecurityAWK / American Water Works Company, Inc.
InstitutionGreen Alpha Advisors, LLC
Latest Disclosed Ownership1,691 shares
Latest Disclosed Value $ 230,129
Green Alpha Advisors, LLC reports 9.52% decrease in ownership of AWK / American Water Works Company, Inc.

On April 7, 2026 - Green Alpha Advisors, LLC filed a 13F-HR form disclosing ownership of 1,691 shares of American Water Works Company, Inc. (US:AWK) valued at $230,128 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 7, 2026 disclosing 1,869 shares of American Water Works Company, Inc.. This represents a change in shares of -9.52% during the quarter. The current value of the position is $209,363 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)
2026-04-07 2026-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 1,691 -178 -9.52 230 -5.35 0.2266
2026-01-07 2025-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 1,869 304 19.42 244 11.98 0.2235
2025-10-15 2025-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 1,565 -193 -10.98 218 -11.07 0.2103
2025-08-01 2025-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 1,758 -294 -14.33 245 -19.21 0.2337
2025-04-09 2025-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 2,052 -2,522 -55.14 303 -46.92 0.3233
2025-01-13 2024-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 4,574 -304 -6.23 569 -20.20 0.4567
2024-10-07 2024-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 4,878 -155 -3.08 713 9.69 0.5603
2024-08-13 2024-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 5,033 -292 -5.48 650 0.00 0.5223
2024-04-10 2024-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 5,325 -24 -0.45 651 -7.93 0.4713
2024-01-05 2023-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 5,349 -56 -1.04 706 5.53 0.5089
2023-10-10 2023-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 5,405 -112 -2.03 669 -14.99 0.5141
2023-07-06 2023-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 5,517 571 11.54 788 8.70 0.5166
2023-04-06 2023-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 4,946 -66 -1.32 725 -5.24 0.5080
2023-01-12 2022-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 5,012 -9 -0.18 764 16.82 0.6346
2022-10-14 2022-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 5,021 14 0.28 654 -12.21 0.5540
2022-07-08 2022-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 5,007 -731 -12.74 745 -21.58 0.1711
2022-04-19 2022-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 5,738 138 2.46 950 -10.21 0.6409
2022-01-12 2021-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 5,600 2 0.04 1,058 11.84 0.7145
2021-10-12 2021-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 5,598 185 3.42 946 13.43 0.6532
2021-07-22 2021-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 5,413 5,413 834 0.5677
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.