Among active 13F managers last quarter, 11 opened and 16 added, while 23 reduced; the largest holder to move was Global Alpha Capital Management Ltd. (−0.9%). Over the last 180 days, 3 insiders sold and none bought, a net -$4.3M in open-market trades.
The legs disagree, or only one of them leans.
119 tracked 13F filers disclose a position in ATNI as of the latest SEC 13F filings, a combined $238.5M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Global Alpha Capital Management Ltd. | 1.4M | $38.3M | ▼−0.9% Reduced · −13K sh | Q2 2026 | |
| 2 | BlackRock, Inc. | 923K | $24.5M | ▲+2.3% Added · +21K sh | Q2 2026 | |
| 3 | Dimensional Fund Advisors LP | 748K | $20.4M | ▼−4.1% Reduced · −32K sh | Q1 2026 | |
| 4 | Brown Brothers Harriman & Co | 663K | $17.6M | —Held | Q2 2026 | |
| 5 | American Century Companies Inc | 475K | $12.9M | ▲+16% Added · +64K sh | Q1 2026 | |
| 6 | Vanguard Capital Management LLC | 414K | $11.0M | ▼−1.9% Reduced · −8K sh | Q2 2026 | |
| 7 | D. E. Shaw & Co., Inc. | 374K | $10.2M | ▼−9.4% Reduced · −39K sh | Q1 2026 | |
| 8 | Renaissance Technologies LLC | 338K | $9.2M | ▼−1.8% Reduced · −6K sh | Q1 2026 | |
| 9 | Morgan Stanley | 281K | $7.6M | ▲+88% Added · +131K sh | Q1 2026 | |
| 10 | Geode Capital Management, LLC | 271K | $7.2M | ▲+7.4% Added · +19K sh | Q2 2026 | |
| 11 | State Street Corp | 222K | $5.9M | ▼−2.5% Reduced · −6K sh | Q2 2026 | |
| 12 | Bridgeway Capital Management, LLC | 148K | $3.9M | —Held | Q2 2026 | |
| 13 | Arrowstreet Capital, Limited Partnership | 139K | $3.8M | ▲+45% Added · +43K sh | Q1 2026 | |
| 14 | Ballast Asset Management, LP | 136K | $3.6M | ▼−1.0% Reduced · −1K sh | Q2 2026 | |
| 15 | FMR LLC | 127K | $3.4M | ▲+18% Added · +20K sh | Q2 2026 | |
| 16 | Bank of New York Mellon Corp | 123K | $3.3M | ▲+0.9% Added · +1K sh | Q1 2026 | |
| 17 | Gabelli Funds LLC | 116K | $3.2M | ▼−26% Reduced · −41K sh | Q1 2026 | |
| 18 | Vanguard Portfolio Management LLC | 104K | $2.8M | ▲+9.4% Added · +9K sh | Q2 2026 | |
| 19 | Citadel Advisors LLC | 98K | $2.6M | ▲+155% Added · +60K sh | Q2 2026 | |
| 20 | Empowered Funds, LLC | 94K | $2.5M | ▲+9.9% Added · +8K sh | Q1 2026 | |
| 21 | Sei Investments Co | 86K | $2.3M | ▲+115% Added · +46K sh | Q1 2026 | |
| 22 | Northern Trust Corp | 84K | $2.3M | ▲+3.0% Added · +2K sh | Q1 2026 | |
| 23 | Charles Schwab Investment Management Inc | 82K | $2.2M | ▲+0.3% Added · +213 sh | Q1 2026 | |
| 24 | Goldman Sachs Group Inc | 75K | $2.0M | ▼−20% Reduced · −19K sh | Q1 2026 | |
| 25 | O'shaughnessy Asset Management, LLC | 68K | $1.8M | ▲+386% Added · +54K sh | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 11 funds opened a new position in ATNI and 16 added to an existing one, while 23 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Microsoft CorpMSFT | 67 funds | $145.4B |
| Nvidia CorpNVDA | 64 funds | $230.3B |
| Amazon.com IncAMZN | 64 funds | $110.8B |
| Meta Platforms Inc-Class AMETA | 64 funds | $60.0B |
| Eli Lilly & CoLLY | 64 funds | $48.0B |
| Costco Wholesale CorpCOST | 64 funds | $21.1B |
| Alphabet Inc-CL AGOOGL | 63 funds | $102.5B |
| Broadcom IncAVGO | 63 funds | $99.5B |
| JPMorgan Chase & CoJPM | 63 funds | $35.7B |
| Berkshire Hathaway Inc-CL BBRK/B | 63 funds | $20.9B |
| Apple IncAAPL | 62 funds | $166.2B |
| Alphabet Inc-CL CGOOG | 62 funds | $77.9B |
Ranked by how many of ATNI's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in ATNI.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 3, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 5K | $141K |
| Sep 2, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 3K | $80K |
| Aug 31, 2026 | Jacobs Patricia | Director | Sell (S) | 2K | $45K |
| Aug 24, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 10K | $313K |
| Aug 20, 2026 | Jacobs Patricia | Director | Sell (S) | 1K | $31K |
| Aug 20, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 500 | $16K |
| Aug 19, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 10K | $319K |
| Aug 18, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 1K | $32K |
| Aug 17, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 6K | $183K |
| Aug 14, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 26 | $835 |
| Aug 13, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) | 3K | $80K |
| Aug 10, 2026 | Prior Cornelius B Jr | 10% Owner | Sell (S) 2 lots, same day | 7K | $228K |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 41 | 37 | – |
Insiders Form 4 open-market | 0 | 3 | -$4.3M |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for ATNI
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/ATNI/capital-change-brief"
Use Arkolith's capital_change_brief for ATNI. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ATNI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.