SEC Filing Analysis: American Water Works Company, Inc.

Executive Summary

• Trading Significance: Low
• Key Takeaway: The Vanguard Group reports 0 beneficial ownership due to an internal corporate realignment, shifting reporting to subsidiaries.
• Market Impact: Neutral - Administrative change only.

Company Information

Field	Value
Company	American Water Works Company, Inc.
CIK	0001410636
Industry	Water Supply

Insider Information

Field	Value
Name	The Vanguard Group
CIK	0000102909
Relationship	Institutional Investor

Transaction Details

Field	Value
Form Type	SCHEDULE 13G/A
Event Date	03/13/2026
Shares Owned After	0
Ownership Type	N/A

Financial Impact Assessment

Transaction Materiality

Metric	Value
Transaction Value	N/A
% of Market Cap	N/A
Shares Transacted	N/A
% of Shares Outstanding	N/A
Post-Transaction Ownership	0 shares (0% of outstanding)
Materiality Assessment	Low

Impact Evaluation

• Market Cap Context: With a market cap of $26.51 billion, American Water Works is a large-cap utility. Institutional holdings are typically stable.
• Ownership Concentration: While Vanguard previously held a significant stake, this filing reduces the parent company's direct reporting to 0%. The actual economic interest likely remains within Vanguard's subsidiaries.
• Transaction Significance: The reduction to 0% is technical. The filing explicitly states that subsidiaries now report separately in reliance on SEC Release No. 34-39538.

Market Impact Analysis

Stock Impact Prediction

• Direction: Neutral
• Reasoning: This is a technical reporting change (