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/RIOT/capital-change-brief"
Use Arkolith's capital_change_brief for RIOT. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $366.5M | 29.7M | ▲+1.9% Added · +545K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $268.0M | 21.7M | ▲New +21.7M sh | Q1 2026 | |
| 3 | Starboard Value LP | $192.1M | 15.5M | ▲+22% Added · +2.8M sh | Q1 2026 | |
| 4 | FMR LLC | $185.6M | 15.0M | ▲+17% Added · +2.2M sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $183.7M | 14.9M | ▲New +14.9M sh | Q1 2026 | |
| 6 | Situational Awareness LP | $142.2M | 11.5M | ▲+86% Added · +5.3M sh | Q1 2026 | |
| 7 | Situational Awareness Partners LP | $142.2M | 11.5M | ▲New +11.5M sh | Q1 2026 | |
| 8 | STATE STREET CORP | $113.6M | 9.2M | ▲+3.2% Added · +283K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $110.8M | 9.0M | ▲+1.5% Added · +130K sh | Q1 2026 | |
| 10 | JANE STREET GROUP, LLC | $91.3M | 7.4M | ▲+49% Added · +2.4M sh | Q1 2026 | |
| 11 | DIMENSIONAL FUND ADVISORS LP | $86.7M | 7.0M | ▲+36% Added · +1.9M sh | Q1 2026 | |
| 12 | D. E. Shaw & Co., Inc. | $67.4M | 5.5M | —Held | Q1 2026 | |
| 13 | Value Aligned Research Advisors, LLC | $64.0M | 5.2M | ▼−46% Reduced · −4.4M sh | Q1 2026 | |
| 14 | BANK OF AMERICA CORP /DE/ | $49.9M | 4.0M | ▲+368% Added · +3.2M sh | Q1 2026 | |
| 15 | T. Rowe Price Investment Management, Inc. | Withheld | 3.8M | ▼−10% Reduced · −443K sh | Q1 2026 | |
| 16 | GOLDMAN SACHS GROUP INC | $47.1M | 3.8M | ▼−22% Reduced · −1.1M sh | Q1 2026 | |
| 17 | WESTFIELD CAPITAL MANAGEMENT CO LP | $43.3M | 3.5M | ▲New +3.5M sh | Q1 2026 | |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $39.4M | 3.2M | ▼−4.9% Reduced · −163K sh | Q1 2026 | |
| 19 | MORGAN STANLEY | $37.5M | 3.0M | ▼−25% Reduced · −1.0M sh | Q1 2026 | |
| 20 | NORTHERN TRUST CORP | $37.4M | 3.0M | ▲+8.6% Added · +241K sh | Q1 2026 | |
| 21 | PRINCIPAL FINANCIAL GROUP INC | $36.6M | 3.0M | ▲+55% Added · +1.0M sh | Q1 2026 | |
| 22 | CITADEL ADVISORS LLC | $36.0M | 2.9M | ▲+80% Added · +1.3M sh | Q1 2026 | |
| 23 | AMERIPRISE FINANCIAL INC | $34.5M | 2.8M | ▲29× Added · +2.7M sh | Q1 2026 | |
| 24 | VAN ECK ASSOCIATES CORP | Withheld | 2.7M | ▼−11% Reduced · −348K sh | Q1 2026 | |
| 25 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $33.7M | 2.7M | ▲+19% Added · +440K 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 7, 2026 | Werner Ryan D. | SVP, CAO | Sell (S) | 10K | $217K |
| Jul 7, 2026 | Werner Ryan D. | SVP, CAO | Sell (S) | 8K | $167K |
| Jul 1, 2026 | Turner Michael John | Director | Grant (A) | 8K | $0 |
| Jul 1, 2026 | Mouton Douglas | Director | Grant (A) | 8K | $0 |
| Jul 1, 2026 | Leverton Jaime | Director | Grant (A) | 8K | $0 |
| Jul 1, 2026 | D'Ambrosio Lance Varro | Director | Grant (A) | 8K | $0 |
| Jul 1, 2026 | Les Jason | CEO, Director | Tax withholding (F) | 101K | $2.4M |
| Jul 1, 2026 | Howell Stephen Mitchell Jr. | COO | Tax withholding (F) | 22K | $526K |
| Jul 1, 2026 | Werner Ryan D. | SVP, CAO | Tax withholding (F) | 14K | $332K |
| Jul 1, 2026 | Yee Colin M. | Insider | Option exercise (M) | 125K | $0 |
| Jul 1, 2026 | Yee Colin M. | Insider | Option exercise (M) | 41K | $0 |
| Jul 1, 2026 | Yee Colin M. | Insider | Option exercise (M) | 84K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 125 funds | $50.8B |
| NVIDIA CORPNVDA | 124 funds | $75.1B |
| AMAZON.COM INCAMZN | 124 funds | $37.0B |
| BROADCOM INCAVGO | 124 funds | $25.6B |
| ALPHABET INC-CL AGOOGL | 122 funds | $33.4B |
| META PLATFORMS INC-CLASS AMETA | 122 funds | $23.3B |
| TESLA INCTSLA | 122 funds | $16.0B |
| MICRON TECHNOLOGY INCMU | 122 funds | $10.0B |
| ADVANCED MICRO DEVICESAMD | 121 funds | $7.4B |
| NETFLIX INCNFLX | 121 funds | $7.3B |
| APPLE INCAAPL | 120 funds | $58.7B |
| ELI LILLY & COLLY | 119 funds | $13.1B |
Ranked by how many of RIOT'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 RIOT. 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.