AWK — AMERICAN WTR WKS CO INC NEW COM

Ownership history in OSTERWEIS CAPITAL MANAGEMENT INC  ·  59 quarters on record

AI Ownership Summary

OSTERWEIS CAPITAL MANAGEMENT INC reported AMERICAN WTR WKS CO INC NEW COM (AWK) in 59 quarterly 13F filings from 2024 Q4 through 2025 Q4. Peak portfolio weight reached 2.13% in 2025 Q1. The latest visible filing shows AWK at 1.67% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this AWK ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was OSTERWEIS CAPITAL MANAGEMENT INC's position in AMERICAN WTR WKS CO INC NEW COM, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

AWK was reported at 1.67% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
2.13% in 2025 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q4 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

AWK stock page OSTERWEIS CAPITAL MANAGEMENT INC fund profile OSTERWEIS CAPITAL MANAGEMENT INC full holdings
How OSTERWEIS CAPITAL MANAGEMENT INC held AWK — position size vs. price
% of Fund (quarterly)    AWK price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 5 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED 303,095 +5,036 +1.7% 1.67% $39.6M 2026-02-14 (Est.) $133.50
2025 Q3 ADDED 298,059 +3,116 +1.1% 1.87% $41.5M 2025-11-14 $130.73
2025 Q2 ADDED 294,943 +1,737 +0.6% 1.96% $41.0M 2025-08-14 $141.54
2025 Q1 ADDED 293,206 +90,140 +44.4% 2.13% $432.5M 2025-05-14 $131.32
2024 Q4 ADDED 203,066 +202,780 +70902.1% 1.18% $25.3M 2025-02-13 $123.76
54 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding AWK

As of 2026 Q1 — sorted by position size

CONFLUENCE INVESTMENT MANAGEMENT LLC 3Y 7Y 1.71% Bangor Savings Bank 3Y 7Y 0.12% ADIRONDACK TRUST CO 3Y 7Y 0.03% NEVILLE RODIE & SHAW INC 3Y 7Y 0.01% Byrne Asset Management LLC 3Y 0.01% Ares Financial Consulting, LLC 0.01% Aspect Partners, LLC 0.0% Investors Research Corp 3Y 7Y 0.0% NorthAvenue LLC 0.0% Coastline Trust Co 3Y 7Y 0.0%

FAQ About OSTERWEIS CAPITAL MANAGEMENT INC and AWK

These are the practical questions this page is built to answer before you even open the full history table.

How long has OSTERWEIS CAPITAL MANAGEMENT INC reported owning AWK?

OSTERWEIS CAPITAL MANAGEMENT INC reported AWK across 5 quarterly 13F filings, from 2024 Q4 through 2025 Q4.

What was the largest reported AWK position in OSTERWEIS CAPITAL MANAGEMENT INC's portfolio?

The largest reported portfolio weight for AWK was 2.13% in 2025 Q1.

What is the latest reported AWK position on this page?

The most recent filing on this page is 2025 Q4, when OSTERWEIS CAPITAL MANAGEMENT INC reported 303,095 shares, equal to 1.67% of portfolio, with an estimated market value of $39.6M.

What does the chart on this AWK ownership page compare?

The chart compares OSTERWEIS CAPITAL MANAGEMENT INC's quarterly AWK portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

← Back to OSTERWEIS CAPITAL MANAGEMENT INC Holdings