Among active 13F managers last quarter, 7 opened and 28 added, while 14 reduced; the largest holder to move was ARK Investment Management LLC (+4.8%). No open-market insider trades in the last 180 days.
Funds lean in and no leg opposes.
122 tracked 13F filers disclose a position in ARCT as of the latest SEC 13F filings, a combined $178.1M 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 | Federated Hermes, Inc. | 3.3M | $25.5M | —Held | Q1 2026 | |
| 2 | ARK Investment Management LLC | 2.9M | $19.5M | ▲+4.8% Added · +132K sh | Q2 2026 | |
| 3 | BlackRock, Inc. | 2.6M | $17.6M | ▲~0% Added · +731 sh | Q2 2026 | |
| 4 | Sumitomo Mitsui Trust Group, Inc. | 2.3M | $17.7M | ▲+13% Added · +262K sh | Q1 2026 | |
| 5 | Amova Asset Management Americas, Inc. | 2.3M | $17.6M | ▲+13% Added · +262K sh | Q1 2026 | |
| 6 | Vanguard Capital Management LLC | 1.1M | $7.5M | ▲+0.7% Added · +8K sh | Q2 2026 | |
| 7 | Two Sigma Investments, LP | 1.1M | $8.4M | ▲+98% Added · +535K sh | Q1 2026 | |
| 8 | Vanguard Portfolio Management LLC | 952K | $6.4M | ▼−2.7% Reduced · −26K sh | Q2 2026 | |
| 9 | Geode Capital Management, LLC | 694K | $4.7M | ▲+5.0% Added · +33K sh | Q2 2026 | |
| 10 | Jacobs Levy Equity Management, Inc | 648K | $4.4M | ▲+226% Added · +449K sh | Q2 2026 | |
| 11 | State Street Corp | 570K | $3.8M | ▲+4.7% Added · +26K sh | Q2 2026 | |
| 12 | Millennium Management LLC | 479K | $3.7M | ▲+57% Added · +174K sh | Q1 2026 | |
| 13 | UBS Group AG | 458K | $3.5M | ▲+101% Added · +230K sh | Q1 2026 | |
| 14 | Empire Life Investments Inc. | 366K | $2.5M | ▼−4.5% Reduced · −17K sh | Q2 2026 | |
| 15 | Hennion & Walsh Asset Management, Inc. | 346K | $2.3M | ▲+24% Added · +67K sh | Q2 2026 | |
| 16 | Dimensional Fund Advisors LP | 288K | $2.2M | ▼−41% Reduced · −202K sh | Q1 2026 | |
| 17 | D. E. Shaw & Co., Inc. | 252K | $1.9M | ▲+158% Added · +154K sh | Q1 2026 | |
| 18 | Point72 Asset Management, L.P. | 232K | $1.6M | ▲+263% Added · +168K sh | Q2 2026 | |
| 19 | Northern Trust Corp | 220K | $1.7M | ▲+9.4% Added · +19K sh | Q1 2026 | |
| 20 | Heartland Advisors Inc | 219K | $1.5M | ▼−14% Reduced · −37K sh | Q2 2026 | |
| 21 | Charles Schwab Investment Management Inc | 217K | $1.7M | ▲+18% Added · +33K sh | Q1 2026 | |
| 22 | Susquehanna International Group, LLP | 204K | $1.6M | ▲+173% Added · +129K sh | Q1 2026 | |
| 23 | Goldman Sachs Group Inc | 199K | $1.5M | ▼−49% Reduced · −193K sh | Q1 2026 | |
| 24 | JPMorgan Chase & Co | 198K | $1.4M | ▼−4.0% Reduced · −8K sh | Q1 2026 | |
| 25 | BNP Paribas Financial Markets | 195K | $1.5M | ▲+33% Added · +48K 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, 7 funds opened a new position in ARCT and 28 added to an existing one, while 14 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 |
|---|---|---|
| Nvidia CorpNVDA | 67 funds | $214.2B |
| Microsoft CorpMSFT | 65 funds | $128.4B |
| Amazon.com IncAMZN | 65 funds | $97.6B |
| Eli Lilly & CoLLY | 64 funds | $41.4B |
| Broadcom IncAVGO | 63 funds | $85.5B |
| Meta Platforms Inc-Class AMETA | 63 funds | $55.6B |
| Advanced Micro DevicesAMD | 63 funds | $35.2B |
| Alphabet Inc-CL CGOOG | 62 funds | $66.3B |
| Lam Research CorpLRCX | 62 funds | $23.0B |
| Vertex Pharmaceuticals IncVRTX | 62 funds | $6.5B |
| Alphabet Inc-CL AGOOGL | 61 funds | $91.3B |
| Tesla IncTSLA | 61 funds | $38.1B |
Ranked by how many of ARCT's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in ARCT.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 15, 2025 | Sassine Andy | Chief Financial Officer, Director | Buy (P) | 1K | $21K |
| Oct 15, 2024 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 12K | $249K |
| Jun 12, 2024 | Sassine Andy | Chief Financial Officer, Director | Sell (S) | 50K | $1.6M |
| Jun 5, 2024 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 114 | $5K |
| Jun 3, 2024 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 26K | $1.0M |
| Mar 25, 2024 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 17K | $611K |
| Mar 19, 2024 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 9K | $300K |
| Nov 1, 2023 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 5K | $94K |
| Oct 2, 2023 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 5K | $128K |
| Sep 1, 2023 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 5K | $157K |
| Aug 1, 2023 | Chivukula Pad | Chief Scientific Officer & COO | Sell (S) | 5K | $175K |
| Jul 14, 2023 | Kummerfeld Keith C | See Remarks | Sell (S) | 7K | $244K |
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 | 50 | 30 | – |
Insiders Form 4 open-market | 0 | 0 | $0 |
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 ARCT
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/ARCT/capital-change-brief"
Use Arkolith's capital_change_brief for ARCT. 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 ARCT. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.