68 tracked 13F filers disclose a position in ABOS as of the latest SEC 13F filings, a combined $93.1M 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 | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | $49.5M | 21.0M | ▲+41% Added · +6.1M sh | Q1 2026 | |
| 2 | Alyeska Investment Group, L.P. | $5.8M | 2.5M | ▲+161% Added · +1.5M sh | Q1 2026 | |
| 3 | FRANKLIN RESOURCES INC | $5.4M | 2.3M | —Held | Q1 2026 | |
| 4 | ADAR1 Capital Management, LLC | $5.1M | 2.2M | ▲+142% Added · +1.3M sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $3.6M | 1.5M | →First observed position No prior filed position | Q1 2026 | |
| 6 | FMR LLC | $2.7M | 1.2M | ▼−43% Reduced · −870K sh | Q1 2026 | |
| 7 | Ikarian Capital, LLC | $2.5M | 1.1M | ▲+314% Added · +799K sh | Q1 2026 | |
| 8 | Hudson Bay Capital Management LP | $2.3M | 969K | ▲+34% Added · +244K sh | Q1 2026 | |
| 9 | Pathstone Holdings, LLC | $2.0M | 859K | —Held | Q1 2026 | |
| 10 | MILLENNIUM MANAGEMENT LLC | $1.6M | 660K | ▲+13% Added · +76K sh | Q1 2026 | |
| 11 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.4M | 601K | ▲+61% Added · +228K sh | Q1 2026 | |
| 12 | TWO SIGMA INVESTMENTS, LP | $1.3M | 531K | ▲+271% Added · +388K sh | Q1 2026 | |
| 13 | Laurion Capital Management LP | $1.2M | 525K | ▼−39% Reduced · −342K sh | Q1 2026 | |
| 14 | RENAISSANCE TECHNOLOGIES LLC | $1.1M | 474K | ▲+12% Added · +51K sh | Q1 2026 | |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | $983K | 416K | ▲+1.5% Added · +6K sh | Q1 2026 | |
| 16 | BANK OF AMERICA CORP /DE/ | $756K | 320K | ▲+33% Added · +80K sh | Q1 2026 | |
| 17 | BOOTHBAY FUND MANAGEMENT, LLC | $644K | 273K | ▲+590% Added · +233K sh | Q1 2026 | |
| 18 | GOLDMAN SACHS GROUP INC | $488K | 207K | ▲+75% Added · +89K sh | Q1 2026 | |
| 19 | VANGUARD FIDUCIARY TRUST CO | $470K | 199K | →First observed position No prior filed position | Q1 2026 | |
| 20 | MARSHALL WACE, LLP | $455K | 193K | ▲+823% Added · +172K sh | Q1 2026 | |
| 21 | BlackRock, Inc. | $421K | 178K | ▲+5.2% Added · +9K sh | Q1 2026 | |
| 22 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $416K | 176K | ▲+3.5% Added · +6K sh | Q1 2026 | |
| 23 | STATE STREET CORP | $358K | 152K | ▲+51% Added · +52K sh | Q1 2026 | |
| 24 | MORGAN STANLEY | $341K | 145K | ▼−13% Reduced · −22K sh | Q1 2026 | |
| 25 | Qube Research & Technologies Ltd | $284K | 120K | ▲+151% Added · +72K 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, 9 funds opened a new position in ABOS and 14 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 | 24 funds | $6.4B |
| BROADCOM INCAVGO | 24 funds | $3.3B |
| US BANCORPUSB | 24 funds | $355.8M |
| SCHWAB (CHARLES) CORPSCHW | 24 funds | $282.1M |
| AMAZON.COM INCAMZN | 23 funds | $6.3B |
| META PLATFORMS INC-CLASS AMETA | 23 funds | $3.2B |
| MICRON TECHNOLOGY INCMU | 23 funds | $2.2B |
| JPMORGAN CHASE & COJPM | 23 funds | $2.1B |
| ADVANCED MICRO DEVICESAMD | 23 funds | $1.6B |
| ELI LILLY & COLLY | 23 funds | $1.5B |
| CHEVRON CORPCVX | 23 funds | $1.3B |
| ARISTA NETWORKS INCANET | 23 funds | $1.2B |
Ranked by how many of ABOS's institutional holders also hold each name, a cross-fund conviction signal.
| 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 |
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.