675 tracked 13F filers disclose a position in ATI as of the latest SEC 13F filings, a combined $15.7B 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 | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $2.4B | 16.4M | ▲+12% Added · +1.8M sh | Q1 2026 | |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $890.8M | 6.1M | →First observed position No prior filed position | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $846.8M | 5.8M | →First observed position No prior filed position | Q1 2026 | |
| 4 | FMR LLC | $763.3M | 5.2M | ▲+3.4% Added · +172K sh | Q1 2026 | |
| 5 | STATE STREET CORP | $1.0B | 5.2M | ▼−2.7% Reduced · −144K sh | Q2 2026 | |
| 6 | VIKING GLOBAL INVESTORS LP | $484.8M | 3.3M | ▲New +3.3M sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $547.6M | 2.8M | ▼−5.8% Reduced · −170K sh | Q2 2026 | |
| 8 | Point72 Asset Management, L.P. | $281.1M | 1.9M | ▲+154% Added · +1.2M sh | Q1 2026 | |
| 9 | D. E. Shaw & Co., Inc. | $253.5M | 1.7M | ▼−14% Reduced · −280K sh | Q1 2026 | |
| 10 | NORGES BANK | $198.8M | 1.7M | ▲+1.9% Added · +33K sh | Q4 2025 | |
| 11 | MORGAN STANLEY | $242.7M | 1.7M | ▲+30% Added · +385K sh | Q1 2026 | |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $218.5M | 1.5M | ▲+0.9% Added · +14K sh | Q1 2026 | |
| 13 | JANE STREET GROUP, LLC | $216.9M | 1.5M | ▲+438% Added · +1.2M sh | Q1 2026 | |
| 14 | UBS Group AG | $206.4M | 1.4M | ▲+19% Added · +226K sh | Q1 2026 | |
| 15 | DIMENSIONAL FUND ADVISORS LP | $198.7M | 1.4M | ▼−36% Reduced · −759K sh | Q1 2026 | |
| 16 | BANK OF AMERICA CORP /DE/ | $198.5M | 1.4M | ▲+71% Added · +566K sh | Q1 2026 | |
| 17 | DENDUR CAPITAL LP | $186.6M | 1.3M | ▼−37% Reduced · −756K sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $180.2M | 1.2M | ▲+5.5% Added · +65K sh | Q1 2026 | |
| 19 | AQR CAPITAL MANAGEMENT LLC | $174.1M | 1.2M | ▲+20% Added · +203K sh | Q1 2026 | |
| 20 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $175.1M | 1.2M | ▲+231% Added · +840K sh | Q1 2026 | |
| 21 | Holocene Advisors, LP | $159.7M | 1.1M | ▲+2.4% Added · +26K sh | Q1 2026 | |
| 22 | AMERICAN CENTURY COMPANIES INC | $155.5M | 1.1M | ▼−33% Reduced · −521K sh | Q1 2026 | |
| 23 | BOWEN HANES & CO INC | $151.7M | 1.0M | ▼−11% Reduced · −135K sh | Q1 2026 | |
| 24 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $150.2M | 1.0M | ▲+2.5% Added · +25K sh | Q1 2026 | |
| 25 | AMERIPRISE FINANCIAL INC | $145.3M | 999K | ▼−20% Reduced · −245K sh | Q1 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, 7 funds opened a new position in ATI and 22 added to an existing one, while 24 reduced and 0 exited entirely — 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 | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 389 funds | $216.8B |
| MICROSOFT CORPMSFT | 387 funds | $285.2B |
| NVIDIA CORPNVDA | 384 funds | $423.9B |
| META PLATFORMS INC-CLASS AMETA | 380 funds | $120.3B |
| ALPHABET INC-CL AGOOGL | 378 funds | $184.5B |
| APPLE INCAAPL | 377 funds | $320.7B |
| ELI LILLY & COLLY | 375 funds | $84.2B |
| BROADCOM INCAVGO | 368 funds | $167.2B |
| ADVANCED MICRO DEVICESAMD | 364 funds | $41.0B |
| ALPHABET INC-CL CGOOG | 363 funds | $131.2B |
| MICRON TECHNOLOGY INCMU | 363 funds | $45.8B |
| JPMORGAN CHASE & COJPM | 361 funds | $69.0B |
Ranked by how many of ATI's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 31, 2026 | Harris Timothy J | Senior VP and CDIO | Sell (S) | 17K | $3.5M |
| Aug 24, 2026 | Harris Timothy J | Senior VP and CDIO | Sell (S) | 17K | $3.4M |
| Aug 17, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 5K | $1.1M |
| Aug 17, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 9K | $2.1M |
| Aug 17, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 8K | $1.9M |
| Aug 17, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 2K | $459K |
| Aug 17, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 1K | $228K |
| Jul 28, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 32K | $6.1M |
| Jul 7, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 2K | $359K |
| Jul 7, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 2K | $360K |
| Jul 7, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 200 | $36K |
| Jul 7, 2026 | Fields Kimberly A | Chair, President and CEO, Director | Sell (S) | 2K | $399K |
Connected entities for ATI
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/ATI/capital-change-brief"
Use Arkolith's capital_change_brief for ATI. 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 ATI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.