Among active 13F managers last quarter, 9 opened and 22 added, while 10 reduced; the largest holder to move was Renaissance Technologies LLC (+15%). Over the last 180 days, 1 insider sold and none bought, a net -$585K in open-market trades.
The legs disagree, or only one of them leans.
94 tracked 13F filers disclose a position in ARTNA as of the latest SEC 13F filings, a combined $140.6M 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 | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | T. Rowe Price Investment Management, Inc. | 912K | Withheld | ▲+0.5% Added · +4K sh | Q2 2026 | |
| 2 | Vanguard Capital Management LLC | 399K | $13.6M | ▲+2.8% Added · +11K sh | Q2 2026 | |
| 3 | Renaissance Technologies LLC | 320K | $10.2M | ▲+15% Added · +42K sh | Q1 2026 | |
| 4 | BlackRock, Inc. | 209K | $7.1M | ▲+23% Added · +39K sh | Q2 2026 | |
| 5 | Adage Capital Partners GP, L.L.C. | 200K | $6.4M | ▲+33% Added · +50K sh | Q1 2026 | |
| 6 | Morgan Stanley | 196K | $6.2M | ▲+22% Added · +35K sh | Q1 2026 | |
| 7 | Dimensional Fund Advisors LP | 190K | $6.0M | ▲+0.6% Added · +1K sh | Q1 2026 | |
| 8 | UBS Group AG | 171K | $5.5M | ▲+166% Added · +107K sh | Q1 2026 | |
| 9 | Two Sigma Investments, LP | 167K | $5.3M | ▲+197% Added · +111K sh | Q1 2026 | |
| 10 | Kestra Advisory Services, LLC | 165K | $5.6M | ▼−0.7% Reduced · −1K sh | Q2 2026 | |
| 11 | Prospera Financial Services Inc | 157K | $5.3M | ▼−0.6% Reduced · −895 sh | Q2 2026 | |
| 12 | Jane Street Group, LLC | 150K | $4.8M | ▲+607% Added · +129K sh | Q1 2026 | |
| 13 | Roffman Miller Associates Inc | 146K | $4.7M | ▲+6.3% Added · +9K sh | Q1 2026 | |
| 14 | Geode Capital Management, LLC | 124K | $4.2M | ▲+21% Added · +22K sh | Q2 2026 | |
| 15 | Marshall Wace, LLP | 101K | $3.2M | ▲+94% Added · +49K sh | Q1 2026 | |
| 16 | Goldman Sachs Group Inc | 98K | $3.1M | ▲+57% Added · +36K sh | Q1 2026 | |
| 17 | Hotchkis & Wiley Capital Management LLC | 97K | $3.3M | ▲+1.8% Added · +2K sh | Q2 2026 | |
| 18 | Deprince Race & Zollo Inc | 86K | $2.9M | ▲+16% Added · +12K sh | Q2 2026 | |
| 19 | Millennium Management LLC | 84K | $2.7M | ▲+101% Added · +42K sh | Q1 2026 | |
| 20 | Bank of New York Mellon Corp | 74K | $2.4M | ▼−3.1% Reduced · −2K sh | Q1 2026 | |
| 21 | Fca Corp | 74K | $2.5M | ▲+5.7% Added · +4K sh | Q2 2026 | |
| 22 | Arrowstreet Capital, Limited Partnership | 74K | $2.3M | ▲+30% Added · +17K sh | Q1 2026 | |
| 23 | First Manhattan Co. LLC. | 72K | $2.5M | ▼−4.2% Reduced · −3K sh | Q2 2026 | |
| 24 | State Street Corp | 70K | $2.4M | ▲+1.7% Added · +1K sh | Q2 2026 | |
| 25 | Vanguard Portfolio Management LLC | 61K | $2.1M | ▼−5.5% Reduced · −4K 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. 1 value row is withheld because the reported units disagree with same-security peers; share counts are unchanged.
Last quarter, 9 funds opened a new position in ARTNA and 22 added to an existing one, while 10 reduced. 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 | Their position there |
|---|---|---|
| Microsoft CorpMSFT | 46 funds | $54.9B |
| Taiwan Semiconductor-SP ADRTSM | 44 funds | $9.7B |
| JPMorgan Chase & CoJPM | 43 funds | $13.0B |
| Nvidia CorpNVDA | 42 funds | $77.2B |
| Alphabet Inc-CL AGOOGL | 42 funds | $34.5B |
| Eli Lilly & CoLLY | 42 funds | $14.4B |
| Bank Of America CorpBAC | 42 funds | $6.9B |
| Apple IncAAPL | 41 funds | $61.2B |
| Broadcom IncAVGO | 41 funds | $31.1B |
| Visa Inc-Class A SharesV | 41 funds | $8.3B |
| General Dynamics CorpGD | 41 funds | $2.1B |
| Amazon.com IncAMZN | 40 funds | $43.1B |
Ranked by how many of ARTNA's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in ARTNA.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 3, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $68K |
| Aug 31, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $71K |
| Aug 28, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $71K |
| Aug 25, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $71K |
| Aug 20, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $71K |
| Aug 18, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $70K |
| Aug 17, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $70K |
| Mar 23, 2026 | Taylor Dian C | Director | Sell (S) | 1K | $31K |
| Mar 20, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $62K |
| Mar 19, 2026 | Taylor Dian C | Director | Sell (S) | 2K | $62K |
| Dec 22, 2025 | Taylor Dian C | Director | Sell (S) | 2K | $71K |
| Dec 19, 2025 | Taylor Dian C | Director | Sell (S) | 2K | $71K |
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 41 | 24 | – |
Insiders Form 4 open-market | 0 | 1 | -$585K |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for ARTNA
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/ARTNA/capital-change-brief"
Use Arkolith's capital_change_brief for ARTNA. 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 ARTNA. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.