American Water Works Company, Inc.
MX ˙ BMV ˙ US0304201033
SecurityMX:AWK / American Water Works Company, Inc.
InstitutionO'shaughnessy Asset Management, Llc
Latest Disclosed Ownership24,114 shares
Latest Disclosed Value $ 3,281,674
O'shaughnessy Asset Management, Llc reports 19.88% increase in ownership of AWK / American Water Works Company, Inc.

On May 13, 2026 - O'shaughnessy Asset Management, Llc filed a 13F-HR form disclosing ownership of 24,114 shares of American Water Works Company, Inc. (MX:AWK) valued at $3,281,674 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 20,115 shares of American Water Works Company, Inc.. This represents a change in shares of 19.88% 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)
2026-05-13 2026-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 24,114 3,999 19.88 3,282 24.99 0.0153
2026-02-11 2025-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 20,115 -2,417 -10.73 2,625 -16.29 0.0145
2025-11-13 2025-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 22,532 258 1.16 3,136 1.23 0.0184
2025-08-12 2025-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 22,274 6,682 42.86 3,099 34.70 0.0211
2025-05-13 2025-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 15,592 3,327 27.13 2,300 50.72 0.0185
2025-02-12 2024-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 12,265 237 1.97 1,527 -9.60 0.0130
2024-11-12 2024-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 12,028 2,434 25.37 1,688 36.24 0.0151
2024-08-14 2024-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 9,594 1,838 23.70 1,239 30.83 0.0128
2024-05-13 2024-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 7,756 -930 -10.71 948 -17.36 0.0105
2024-02-09 2023-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 8,686 3,707 74.45 1,146 86.04 0.0152
2023-11-13 2023-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 4,979 810 19.43 617 3.53 0.0092
2023-08-11 2023-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 4,169 1,294 45.01 595 41.33 0.0088
2023-05-12 2023-03-31 13F AMERICAN WTR WKS CO INC COM 030420103 2,875 667 30.21 421 25.30 0.0066
2023-02-10 2022-12-31 13F AMERICAN WTR WKS CO INC COM 030420103 2,208 567 34.55 337 57.01 0.0055
2022-11-14 2022-09-30 13F AMERICAN WTR WKS CO INC COM 030420103 1,641 -431 -20.80 214 -30.52 0.0040
2022-08-11 2022-06-30 13F AMERICAN WTR WKS CO INC COM 030420103 2,072 2,072 308 0.0057
2022-02-11 2021-12-31 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 0 -778 -100.00 0 -100.00
2021-11-10 2021-09-30 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 778 309 65.88 132 83.33 0.0027
2021-08-09 2021-06-30 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 469 108 29.92 72 33.33 0.0014
2021-05-14 2021-03-31 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 361 -180 -33.27 54 -34.94 0.0012
2021-02-11 2020-12-31 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 541 261 93.21 83 102.44 0.0023
2020-11-12 2020-09-30 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 280 52 22.81 41 41.38 0.0012
2020-08-13 2020-06-30 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 228 210 1,166.67 29 1,350.00 0.0009
2020-05-13 2020-03-31 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 18 -14 -43.75 2 -50.00 0.0001
2020-02-12 2019-12-31 13F AMERICAN WATER WORKS CO INC COM USD.01 COMMON 030420103 32 32 4 0.0001
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.