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/ATEX/capital-change-brief"
Use Arkolith's capital_change_brief for ATEX. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Owl Creek Asset Management, L.P. | $206.7M | 5.4M | —Held | Q1 2026 | |
| 2 | Heard Capital LLC | $65.6M | 1.7M | —Held | Q1 2026 | |
| 3 | BlackRock, Inc. | $38.5M | 1.0M | ▼−1.1% Reduced · −11K sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $21.9M | 574K | ▲New +574K sh | Q1 2026 | |
| 5 | QVT Financial LP | $19.2M | 504K | —Held | Q1 2026 | |
| 6 | PLUSTICK MANAGEMENT LLC | $19.1M | 500K | ▲New +500K sh | Q1 2026 | |
| 7 | GAMCO INVESTORS, INC. ET AL | $16.3M | 426K | ▲+0.8% Added · +3K sh | Q1 2026 | |
| 8 | DIMENSIONAL FUND ADVISORS LP | $16.2M | 425K | ▲+31% Added · +100K sh | Q1 2026 | |
| 9 | JANE STREET GROUP, LLC | $16.1M | 421K | ▲+165% Added · +262K sh | Q1 2026 | |
| 10 | STATE STREET CORP | $14.8M | 388K | ▲+16% Added · +54K sh | Q1 2026 | |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $14.3M | 374K | ▲+3.9% Added · +14K sh | Q1 2026 | |
| 12 | GARNET EQUITY CAPITAL HOLDINGS, INC. | $13.1M | 343K | ▼−14% Reduced · −54K sh | Q1 2026 | |
| 13 | MILLENNIUM MANAGEMENT LLC | $11.8M | 308K | ▼−30% Reduced · −132K sh | Q1 2026 | |
| 14 | GABELLI FUNDS LLC | $10.2M | 266K | ▼−13% Reduced · −39K sh | Q1 2026 | |
| 15 | Curated Wealth Partners LLC | $250K | 250K | ▲New +250K sh | Q2 2026 | |
| 16 | Potrero Capital Research LLC | $8.8M | 230K | ▲New +230K sh | Q1 2026 | |
| 17 | AYAL Capital Advisors Ltd | $7.5M | 197K | ▼−26% Reduced · −68K sh | Q1 2026 | |
| 18 | BANK OF AMERICA CORP /DE/ | $6.4M | 168K | ▲+17% Added · +25K sh | Q1 2026 | |
| 19 | VANGUARD PORTFOLIO MANAGEMENT LLC | $6.3M | 165K | ▲New +165K sh | Q1 2026 | |
| 20 | GOLDMAN SACHS GROUP INC | $6.2M | 162K | ▲+30% Added · +37K sh | Q1 2026 | |
| 21 | CITADEL ADVISORS LLC | $6.2M | 161K | ▲+49% Added · +53K sh | Q1 2026 | |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $5.4M | 141K | ▲+1.9% Added · +3K sh | Q1 2026 | |
| 23 | FMR LLC | $5.2M | 135K | ▲+165% Added · +84K sh | Q1 2026 | |
| 24 | Panoramic Capital, LLC | $5.2M | 135K | ▲New +135K sh | Q1 2026 | |
| 25 | CenterBook Partners LP | $4.9M | 128K | ▲New +128K 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jul 13, 2026 | Guttman-McCabe Christopher | Chief Reg & Comm Officer | Tax withholding (F) | 2K | $153K |
| Jul 13, 2026 | Marquez Elena | Chief Financial Officer | Tax withholding (F) | 231 | $23K |
| Jun 18, 2026 | Lang Scott A. | President and CEO, Director | Sell (S) | 170 | $14K |
| Jun 17, 2026 | Marquez Elena | Chief Financial Officer | Option exercise (M) | 1K | $49K |
| Jun 17, 2026 | Marquez Elena | Chief Financial Officer | Sell (S) | 4K | $341K |
| Jun 17, 2026 | Marquez Elena | Chief Financial Officer | Option exercise (M) | 1K | $0 |
| Jun 16, 2026 | YAZDI MAHVASH | Director | Sell (S) | 7K | $560K |
| Jun 15, 2026 | Lang Scott A. | President and CEO, Director | Option exercise (M) | 64K | $2.0M |
| Jun 15, 2026 | Lang Scott A. | President and CEO, Director | Option exercise (M) | 75K | $2.6M |
| Jun 15, 2026 | Lang Scott A. | President and CEO, Director | Tax withholding (F) | 40K | $3.3M |
| Jun 15, 2026 | Lang Scott A. | President and CEO, Director | Tax withholding (F) | 48K | $4.0M |
| Jun 15, 2026 | Lang Scott A. | President and CEO, Director | Option exercise (M) | 64K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 29 funds | $6.1B |
| ELI LILLY & COLLY | 28 funds | $2.4B |
| AMERICAN EXPRESS COAXP | 28 funds | $742.7M |
| BLACKSTONE INCBX | 28 funds | $419.7M |
| MICROSOFT CORPMSFT | 27 funds | $7.6B |
| BROADCOM INCAVGO | 27 funds | $4.8B |
| ALPHABET INC-CL AGOOGL | 27 funds | $4.6B |
| TESLA INCTSLA | 27 funds | $2.9B |
| LAM RESEARCH CORPLRCX | 27 funds | $1.4B |
| VISA INC-CLASS A SHARESV | 27 funds | $1.2B |
| UNITEDHEALTH GROUP INCUNH | 27 funds | $1.2B |
| CAPITAL ONE FINANCIAL CORPCOF | 27 funds | $830.5M |
Ranked by how many of ATEX's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ATEX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.