BROWN BROTHERS HARRIMAN & CO ATNI — ATN INTERNATIONAL INC

Ownership history in BROWN BROTHERS HARRIMAN & CO  ·  35 quarters on record

AI Ownership Summary

BROWN BROTHERS HARRIMAN & CO reported ATN INTERNATIONAL INC (ATNI) in 35 quarterly 13F filings from 2024 Q1 through 2026 Q2. Peak portfolio weight reached 0.14% in 2024 Q1. The latest visible filing shows ATNI at 0.08% 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 ATNI ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was BROWN BROTHERS HARRIMAN & CO's position in ATN INTERNATIONAL INC, 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
2026 Q2

ATNI was reported at 0.08% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.14% in 2024 Q1

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

Time in book
Holding Window
2024 Q1 to 2026 Q2

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.

ATNI stock page BROWN BROTHERS HARRIMAN & CO fund profile BROWN BROTHERS HARRIMAN & CO full holdings
How BROWN BROTHERS HARRIMAN & CO held ATNI — position size vs. price
% of Fund (quarterly)    ATNI price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 UNCHANGED — — — 662,544 — 0% 0.08% $17.6M 2026-08-12 $31.04
2026 Q1 UNCHANGED — — — 662,544 — 0% 0.10% $18.0M 2026-05-14 $26.58
2025 Q4 UNCHANGED — — — 662,544 — 0% 0.08% $15.1M 2026-02-12 $28.52
2025 Q3 ADDED — — — 662,544 +35,394 +5.6% 0.06% $9.9M 2025-11-13 $19.22
2025 Q2 UNCHANGED — — — 627,150 — 0% 0.07% $10.2M 2025-08-11 $14.29
2025 Q1 UNCHANGED — — — 627,150 — 0% 0.09% $12.7M 2025-05-14 $13.51
2024 Q4 UNCHANGED — — — 627,150 — 0% 0.07% $10.5M 2025-02-12 $15.76
2024 Q3 ADDED — — — 627,150 +21,347 +3.5% 0.14% $20.3M 2024-11-13 $17.85
2024 Q2 ADDED — — — 605,803 +10,000 +1.7% 0.10% $13.8M 2024-08-09 $22.88
2024 Q1 ADDED — — — 595,803 +100 +0.0% 0.14% $18.8M 2024-05-10 $22.18
25 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding ATNI

As of 2026 Q2 — sorted by position size

Global Alpha Capital Management Ltd. 3Y 7Y 2.29% Ballast Asset Management, LP 1.44% Semanteon Capital Management, LP 0.92% Harbor Asset Planning, Inc. 0.38% EntryPoint Capital, LLC 0.33% BRIDGEWAY CAPITAL MANAGEMENT, LLC 3Y 7Y 0.07% Dynamic Technology Lab Private Ltd 3Y 7Y 0.06% Verdence Capital Advisors LLC 3Y 0.03% D'Orazio & Associates, Inc. 3Y 7Y 0.03% OCCUDO QUANTITATIVE STRATEGIES LP 3Y 0.02%

FAQ About BROWN BROTHERS HARRIMAN & CO and ATNI

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

How long has BROWN BROTHERS HARRIMAN & CO reported owning ATNI?

BROWN BROTHERS HARRIMAN & CO reported ATNI across 10 quarterly 13F filings, from 2024 Q1 through 2026 Q2.

What was the largest reported ATNI position in BROWN BROTHERS HARRIMAN & CO's portfolio?

The largest reported portfolio weight for ATNI was 0.14% in 2024 Q1.

What is the latest reported ATNI position on this page?

The most recent filing on this page is 2026 Q2, when BROWN BROTHERS HARRIMAN & CO reported 662,544 shares, equal to 0.08% of portfolio, with an estimated market value of $17.6M.

What does the chart on this ATNI ownership page compare?

The chart compares BROWN BROTHERS HARRIMAN & CO's quarterly ATNI 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.

How well did BROWN BROTHERS HARRIMAN & CO time their ATNI position?

Based on 13F filing dates vs. subsequent ATNI price moves, BROWN BROTHERS HARRIMAN & CO correctly timed 12 out of 19 reported position changes (63%). The annualised alpha on ATNI relative to SPY over the holding period was +14.8%.

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