Among active 13F managers last quarter, 12 opened and 8 added, while 4 reduced; the largest holder to move was ADAR1 Capital Management, LLC (+142%). Over the last 180 days, 2 insiders sold and none bought, a net -$90K in open-market trades.
The legs disagree, or only one of them leans.
80 tracked 13F filers disclose a position in ABOS as of the latest SEC 13F filings, a combined $124.0M 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 | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Ra Capital Management, L.P. | 21.0M | $56.1M | —Held | Q2 2026 | |
| 2 | Sands Capital Alternatives, LLC | 3.7M | $9.9M | —Held | Q2 2026 | |
| 3 | BlackRock, Inc. | 2.5M | $6.6M | ▲14× Added · +2.3M sh | Q2 2026 | |
| 4 | Alyeska Investment Group, L.P. | 2.5M | $6.6M | —Held | Q2 2026 | |
| 5 | Franklin Templeton Inc | 2.3M | $5.4M | —Held | Q1 2026 | |
| 6 | ADAR1 Capital Management, LLC | 2.2M | $5.1M | ▲+142% Added · +1.3M sh | Q1 2026 | |
| 7 | Vanguard Capital Management LLC | 1.7M | $4.5M | ▲+11% Added · +166K sh | Q2 2026 | |
| 8 | Knollwood Investment Advisory, LLC | 1.6M | $4.3M | —Held | Q2 2026 | |
| 9 | Geode Capital Management, LLC | 1.1M | $3.0M | ▲+174% Added · +726K sh | Q2 2026 | |
| 10 | Ikarian Capital, LLC | 1.1M | $2.8M | —Held | Q2 2026 | |
| 11 | Hudson Bay Capital Management LP | 955K | $2.5M | ▼−1.4% Reduced · −14K sh | Q2 2026 | |
| 12 | Pathstone Holdings, LLC | 859K | $2.3M | —Held | Q2 2026 | |
| 13 | Millennium Management LLC | 660K | $1.6M | ▲+13% Added · +76K sh | Q1 2026 | |
| 14 | Susquehanna International Group, LLP | 601K | $1.4M | ▲+61% Added · +228K sh | Q1 2026 | |
| 15 | State Street Corp | 601K | $1.6M | ▲+296% Added · +449K sh | Q2 2026 | |
| 16 | Two Sigma Investments, LP | 531K | $1.3M | ▲+271% Added · +388K sh | Q1 2026 | |
| 17 | Renaissance Technologies LLC | 474K | $1.1M | ▲+12% Added · +51K sh | Q1 2026 | |
| 18 | Vanguard Portfolio Management LLC | 321K | $857K | ▲New +321K sh | Q2 2026 | |
| 19 | Bank Of America Corp | 320K | $756K | ▲+33% Added · +80K sh | Q1 2026 | |
| 20 | Vanguard Fiduciary Trust Co | 291K | $778K | ▲+46% Added · +92K sh | Q2 2026 | |
| 21 | Boothbay Fund Management, LLC | 273K | $729K | —Held | Q2 2026 | |
| 22 | Goldman Sachs Group Inc | 207K | $488K | ▲+75% Added · +89K sh | Q1 2026 | |
| 23 | Marshall Wace, LLP | 193K | $455K | ▲+823% Added · +172K sh | Q1 2026 | |
| 24 | Bridgeway Capital Management, LLC | 176K | $470K | —Held | Q2 2026 | |
| 25 | Morgan Stanley | 145K | $341K | ▼−13% Reduced · −22K 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, 12 funds opened a new position in ABOS and 8 added to an existing one, while 4 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 | 35 funds | $120.7B |
| Alphabet Inc-CL AGOOGL | 35 funds | $60.6B |
| Meta Platforms Inc-Class AMETA | 35 funds | $32.6B |
| Eli Lilly & CoLLY | 35 funds | $27.2B |
| Cardinal Health IncCAH | 35 funds | $1.6B |
| Microsoft CorpMSFT | 34 funds | $64.9B |
| Amazon.com IncAMZN | 34 funds | $55.4B |
| JPMorgan Chase & CoJPM | 34 funds | $19.2B |
| Lam Research CorpLRCX | 34 funds | $16.4B |
| Bank Of America CorpBAC | 34 funds | $11.3B |
| Berkshire Hathaway Inc-CL BBRK/B | 34 funds | $9.7B |
| Texas Instruments IncTXN | 34 funds | $5.3B |
Ranked by how many of ABOS's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in ABOS.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 17, 2026 | Porter Derrell | Director | Sell (S) | 13K | $30K |
| Jun 16, 2026 | Porter Derrell | Director | Sell (S) | 13K | $30K |
| Jun 15, 2026 | Porter Derrell | Director | Sell (S) | 6K | $15K |
| Jun 9, 2026 | Fountain Nathan B | Director | Sell (S) | 6K | $14K |
| Mar 6, 2026 | Meisner Derek M | Chief Legal Officer & Corp Sec | Sell (S) | 2K | $7K |
| Feb 27, 2026 | Meisner Derek M | Chief Legal Officer & Corp Sec | Sell (S) | 9K | $28K |
| Jan 28, 2026 | Meisner Derek M | Chief Legal Officer & Corp Sec | Sell (S) | 3K | $8K |
| Jan 26, 2026 | Meisner Derek M | Chief Legal Officer & Corp Sec | Sell (S) | 15K | $45K |
| Jan 23, 2026 | Meisner Derek M | Chief Legal Officer & Corp Sec | Sell (S) | 6K | $11K |
| Jan 22, 2026 | Barton Russell | Chief Operating Officer | Sell (S) | 462 | $850 |
| Jan 22, 2026 | OConnell Daniel Joseph | Chief Executive Officer, Director | Sell (S) | 3K | $5K |
| Jan 22, 2026 | Zuga Matt | CFO & Chief Business Officer | Sell (S) | 2K | $3K |
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 | 21 | 12 | – |
Insiders Form 4 open-market | 0 | 2 | -$90K |
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 ABOS
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/ABOS/capital-change-brief"
Use Arkolith's capital_change_brief for ABOS. 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 ABOS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.