198 tracked 13F filers disclose a position in CCOI as of the latest SEC 13F filings, a combined $815.5M 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 | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $133.3M | 7.1M | ▼−1.6% Reduced · −116K sh | Q1 2026 | |
| 2 | Turtle Creek Asset Management Inc. | $81.9M | 4.3M | ▲+7.7% Added · +312K sh | Q1 2026 | |
| 3 | STATE STREET CORP | $38.6M | 2.8M | ▲+22% Added · +506K sh | Q2 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $51.8M | 2.7M | →First observed position No prior filed position | Q1 2026 | |
| 5 | EdgePoint Investment Group Inc. | $43.0M | 2.3M | —Held | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $40.0M | 2.1M | →First observed position No prior filed position | Q1 2026 | |
| 7 | Park West Asset Management LLC | $36.5M | 1.9M | ▲+37% Added · +526K sh | Q1 2026 | |
| 8 | MORGAN STANLEY | $35.5M | 1.9M | ▲+50% Added · +631K sh | Q1 2026 | |
| 9 | Newtyn Management, LLC | $30.1M | 1.6M | ▲+14% Added · +200K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $17.3M | 1.2M | ▲+3.3% Added · +40K sh | Q2 2026 | |
| 11 | MAGNOLIA GROUP, LLC | $13.6M | 980K | ▼−24% Reduced · −311K sh | Q2 2026 | |
| 12 | GILDER GAGNON HOWE & CO LLC | $10.9M | 784K | ▲+57% Added · +284K sh | Q2 2026 | |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $14.3M | 760K | ▲+14% Added · +93K sh | Q1 2026 | |
| 14 | D. E. Shaw & Co., Inc. | $13.9M | 739K | ▲+164% Added · +459K sh | Q1 2026 | |
| 15 | GOLDMAN SACHS GROUP INC | $13.4M | 713K | ▲+16% Added · +98K sh | Q1 2026 | |
| 16 | Oakum Bay Capital LLC | $13.0M | 690K | ▲+27% Added · +147K sh | Q1 2026 | |
| 17 | Broad Run Investment Management, LLC | $12.5M | 663K | ▼−0.1% Reduced · −500 sh | Q1 2026 | |
| 18 | FMR LLC | $11.1M | 589K | ▼−28% Reduced · −227K sh | Q1 2026 | |
| 19 | CenterBook Partners LP | $7.0M | 503K | ▲+1.9% Added · +9K sh | Q2 2026 | |
| 20 | BlackBarn Capital Partners LP | $9.4M | 500K | ▼−23% Reduced · −150K sh | Q1 2026 | |
| 21 | NORTHERN TRUST CORP | $9.4M | 497K | ▼−0.3% Reduced · −2K sh | Q1 2026 | |
| 22 | JPMORGAN CHASE & CO | $8.6M | 492K | ▲+192% Added · +324K sh | Q1 2026 | |
| 23 | CITADEL ADVISORS LLC | $8.0M | 426K | ▲+155% Added · +259K sh | Q1 2026 | |
| 24 | UBS Group AG | $8.0M | 426K | ▲+71% Added · +177K sh | Q1 2026 | |
| 25 | FRONTIER CAPITAL MANAGEMENT CO LLC | $5.3M | 383K | ▼−4.2% Reduced · −17K 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, 10 funds opened a new position in CCOI and 26 added to an existing one, while 12 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 |
|---|---|---|
| MICROSOFT CORPMSFT | 95 funds | $157.8B |
| AMAZON.COM INCAMZN | 95 funds | $109.8B |
| NVIDIA CORPNVDA | 94 funds | $231.3B |
| META PLATFORMS INC-CLASS AMETA | 92 funds | $66.1B |
| ALPHABET INC-CL CGOOG | 91 funds | $79.3B |
| ELI LILLY & COLLY | 91 funds | $46.0B |
| ALPHABET INC-CL AGOOGL | 90 funds | $81.5B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 89 funds | $23.4B |
| MICRON TECHNOLOGY INCMU | 89 funds | $22.0B |
| ADVANCED MICRO DEVICESAMD | 89 funds | $20.9B |
| COSTCO WHOLESALE CORPCOST | 89 funds | $20.8B |
| CITIGROUP INCC | 89 funds | $12.0B |
Ranked by how many of CCOI's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 16, 2026 | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | Sell (S) | 5K | $81K |
| Jun 15, 2026 | KILMER HENRY W | VP OF NETWORK STRATEGY | Sell (S) | 2K | $41K |
| May 28, 2026 | FERGUSON Lewis H | Director | Sell (S) | 3K | $57K |
| May 14, 2026 | Kennedy Sheryl Lynn | Director | Sell (S) | 3K | $54K |
| Mar 6, 2026 | KILMER HENRY W | VP OF NETWORK STRATEGY | Sell (S) | 2K | $56K |
| Mar 5, 2026 | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | Sell (S) | 5K | $110K |
| Mar 5, 2026 | FERGUSON Lewis H | Director | Sell (S) | 2K | $51K |
| Mar 5, 2026 | Kennedy Sheryl Lynn | Director | Sell (S) | 3K | $76K |
| Dec 11, 2025 | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | Sell (S) | 7K | $175K |
| Dec 8, 2025 | KILMER HENRY W | VP OF NETWORK STRATEGY | Sell (S) | 5K | $95K |
| Dec 2, 2025 | FERGUSON Lewis H | Director | Sell (S) | 4K | $81K |
| Dec 1, 2025 | KILMER HENRY W | VP OF NETWORK STRATEGY | Buy (S) | 2K | $0 |
Connected entities for CCOI
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/CCOI/capital-change-brief"
Use Arkolith's capital_change_brief for CCOI. 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 CCOI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.