86 tracked 13F filers disclose a position in ATOM as of the latest SEC 13F filings, a combined $54.0M 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. | $9.0M | 2.4M | ▲+20% Added · +400K sh | Q1 2026 | |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $4.9M | 1.3M | →First observed position No prior filed position | Q1 2026 | |
| 3 | Baird Financial Group, Inc. | $4.9M | 1.3M | ▲+309% Added · +966K sh | Q1 2026 | |
| 4 | CITADEL ADVISORS LLC | $4.0M | 1.0M | ▲13× Added · +971K sh | Q1 2026 | |
| 5 | D. E. Shaw & Co., Inc. | $3.7M | 976K | ▲17× Added · +917K sh | Q1 2026 | |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $2.9M | 770K | ▲+3.9% Added · +29K sh | Q1 2026 | |
| 7 | HOLLENCREST CAPITAL MANAGEMENT | $2.3M | 597K | ▼−1.5% Reduced · −9K sh | Q1 2026 | |
| 8 | STATE STREET CORP | $2.2M | 578K | ▲+18% Added · +89K sh | Q1 2026 | |
| 9 | TWO SIGMA INVESTMENTS, LP | $2.0M | 530K | ▲+192% Added · +349K sh | Q1 2026 | |
| 10 | Arosa Capital Management LP | $1.9M | 490K | ▲New +490K sh | Q1 2026 | |
| 11 | MARSHALL WACE, LLP | $1.9M | 489K | ▲+173% Added · +309K sh | Q1 2026 | |
| 12 | Defender Capital, LLC. | $2.6M | 295K | ▲New +295K sh | Q2 2026 | |
| 13 | NORTHERN TRUST CORP | $1.1M | 289K | ▲+4.5% Added · +13K sh | Q1 2026 | |
| 14 | MORGAN STANLEY | $1.0M | 272K | ▲+59% Added · +101K sh | Q1 2026 | |
| 15 | Pathstone Holdings, LLC | $956K | 251K | ▲+49% Added · +83K sh | Q1 2026 | |
| 16 | VANGUARD FIDUCIARY TRUST CO | $824K | 216K | →First observed position No prior filed position | Q1 2026 | |
| 17 | GOLDMAN SACHS GROUP INC | $753K | 198K | ▲+42% Added · +59K sh | Q1 2026 | |
| 18 | VANGUARD PORTFOLIO MANAGEMENT LLC | $682K | 179K | →First observed position No prior filed position | Q1 2026 | |
| 19 | UBS Group AG | $670K | 176K | ▲+15% Added · +23K sh | Q1 2026 | |
| 20 | RENAISSANCE TECHNOLOGIES LLC | $621K | 163K | ▲New +163K sh | Q1 2026 | |
| 21 | JANE STREET GROUP, LLC | $608K | 160K | ▼−6.8% Reduced · −12K sh | Q1 2026 | |
| 22 | AQR CAPITAL MANAGEMENT LLC | $471K | 124K | ▲+456% Added · +101K sh | Q1 2026 | |
| 23 | BROWN ADVISORY INC | $382K | 100K | —Held | Q1 2026 | |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $328K | 86K | ▲+17% Added · +13K sh | Q1 2026 | |
| 25 | GROUP ONE TRADING LLC | $317K | 83K | ▲31× Added · +80K 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, 11 funds opened a new position in ATOM and 11 added to an existing one, while 3 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 | 22 funds | $5.9B |
| AMAZON.COM INCAMZN | 22 funds | $5.1B |
| ALPHABET INC-CL AGOOGL | 22 funds | $4.0B |
| META PLATFORMS INC-CLASS AMETA | 22 funds | $2.9B |
| JPMORGAN CHASE & COJPM | 22 funds | $2.4B |
| MICRON TECHNOLOGY INCMU | 22 funds | $2.4B |
| TESLA INCTSLA | 22 funds | $2.2B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 22 funds | $2.2B |
| COSTCO WHOLESALE CORPCOST | 22 funds | $1.6B |
| ELI LILLY & COLLY | 22 funds | $1.5B |
| VISA INC-CLASS A SHARESV | 22 funds | $1.4B |
| MASTERCARD INC - AMA | 22 funds | $1.4B |
Ranked by how many of ATOM's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jul 1, 2026 | Mears Robert J | Chief Technology Officer | Sell (S) | 1K | $8K |
| Jun 15, 2026 | Mears Robert J | Chief Technology Officer | Sell (S) | 8K | $77K |
| Jun 15, 2026 | Laurencio Francis | CFO | Sell (S) | 2K | $14K |
| Jun 15, 2026 | Laurencio Francis | CFO | Sell (S) | 6K | $60K |
| Jun 15, 2026 | Laurencio Francis | CFO | Sell (S) | 13K | $118K |
| Jun 15, 2026 | BIBAUD SCOTT A. | CEO and President, Director | Sell (S) | 50K | $469K |
| Jun 9, 2026 | Mears Robert J | Chief Technology Officer | Sell (S) | 10K | $88K |
| Jun 9, 2026 | Mears Robert J | Chief Technology Officer | Sell (S) | 8K | $70K |
| Jun 8, 2026 | Mears Robert J | Chief Technology Officer | Sell (S) | 10K | $82K |
| Jun 8, 2026 | Mears Robert J | Chief Technology Officer | Sell (S) | 9K | $73K |
| Jun 8, 2026 | Mears Robert J | Chief Technology Officer | Sell (S) | 7K | $62K |
| Jun 8, 2026 | Mears Robert J | Chief Technology Officer | Sell (S) | 10K | $82K |
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/ATOM/capital-change-brief"
Use Arkolith's capital_change_brief for ATOM. 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 ATOM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.