Among active 13F managers last quarter, 8 opened and 7 added, while 7 reduced; the largest holder to move was AIGH Capital Management LLC (−11%). Over the last 180 days, 1 insider bought and none sold, a net +$1.0M in open-market trades.
Funds lean in and no leg opposes.
39 tracked 13F filers disclose a position in BDSX as of the latest SEC 13F filings, a combined $73.2M 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 | AIGH Capital Management LLC | 678K | $15.3M | ▼−11% Reduced · −80K sh | Q2 2026 | |
| 2 | Soleus Capital Management, L.P. | 586K | $13.2M | ▲+41% Added · +169K sh | Q2 2026 | |
| 3 | Aberdeen Group plc | 458K | $6.6M | ▲+75% Added · +196K sh | Q1 2026 | |
| 4 | Vanguard Capital Management LLC | 284K | $6.4M | ▲+11% Added · +29K sh | Q2 2026 | |
| 5 | Essex Investment Management Co LLC | 242K | $5.5M | ▲+83% Added · +110K sh | Q2 2026 | |
| 6 | Opaleye Management Inc. | 180K | $4.1M | ▼−24% Reduced · −58K sh | Q2 2026 | |
| 7 | Marshall Wace, LLP | 142K | $2.1M | ▲New +142K sh | Q1 2026 | |
| 8 | Perceptive Advisors LLC | 109K | $2.5M | ▲Added Added · +109K sh | Q2 2026 | |
| 9 | Legato Capital Management LLC | 81K | $1.8M | ▲+98% Added · +40K sh | Q2 2026 | |
| 10 | Walleye Capital LLC | 74K | $1.7M | ▲+587% Added · +64K sh | Q2 2026 | |
| 11 | Stempoint Capital LP | 70K | $1.6M | ▼~0% Reduced · −4 sh | Q2 2026 | |
| 12 | Geode Capital Management, LLC | 68K | $1.5M | ▲+35% Added · +18K sh | Q2 2026 | |
| 13 | Trexquant Investment LP | 58K | $1.3M | ▼−17% Reduced · −12K sh | Q2 2026 | |
| 14 | Two Sigma Investments, LP | 45K | $656K | ▲New +45K sh | Q1 2026 | |
| 15 | Perkins Capital Management Inc | 45K | $1.0M | ▼−0.4% Reduced · −165 sh | Q2 2026 | |
| 16 | BlackRock, Inc. | 43K | $970K | ▲+76% Added · +19K sh | Q2 2026 | |
| 17 | Sei Investments Co | 43K | $624K | ▲New +43K sh | Q1 2026 | |
| 18 | Blair William & Co | 42K | $937K | ▲+51% Added · +14K sh | Q2 2026 | |
| 19 | Vanguard Fiduciary Trust Co | 40K | $901K | ▲+39% Added · +11K sh | Q2 2026 | |
| 20 | UBS Group AG | 37K | $534K | ▲New +37K sh | Q1 2026 | |
| 21 | Morgan Stanley | 32K | $470K | ▲531× Added · +32K sh | Q1 2026 | |
| 22 | Jane Street Group, LLC | 27K | $392K | ▲New +27K sh | Q1 2026 | |
| 23 | Bridgeway Capital Management, LLC | 26K | $587K | ▲+136% Added · +15K sh | Q2 2026 | |
| 24 | Quadrature Capital Ltd | 25K | $558K | ▲New +25K sh | Q2 2026 | |
| 25 | Millennium Management LLC | 24K | $348K | ▲New +24K 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, 8 funds opened a new position in BDSX and 7 added to an existing one, while 7 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 | 19 funds | $9.5B |
| Apple IncAAPL | 18 funds | $13.6B |
| Advanced Micro DevicesAMD | 18 funds | $2.7B |
| Eli Lilly & CoLLY | 18 funds | $2.6B |
| Bristol-Myers Squibb CoBMY | 18 funds | $1.8B |
| Visa Inc-Class A SharesV | 18 funds | $1.7B |
| Nvidia CorpNVDA | 17 funds | $14.8B |
| Amazon.com IncAMZN | 17 funds | $9.6B |
| Alphabet Inc-CL AGOOGL | 17 funds | $6.8B |
| Alphabet Inc-CL CGOOG | 17 funds | $5.3B |
| Tesla IncTSLA | 17 funds | $5.1B |
| JPMorgan Chase & CoJPM | 17 funds | $3.3B |
Ranked by how many of BDSX's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in BDSX.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 12, 2026 | Schuler Jack W | 10% Owner | Buy (P) | 15K | $367K |
| Aug 11, 2026 | Schuler Jack W | 10% Owner | Buy (P) | 14K | $329K |
| Aug 10, 2026 | Schuler Jack W | 10% Owner | Buy (P) | 14K | $337K |
| Feb 23, 2026 | O'Kane Kieran | Chief Commercial Officer | Sell (S) | 535 | $7K |
| Feb 23, 2026 | Pestano Gary Anthony | Chief Development Officer | Sell (S) | 556 | $7K |
| Feb 23, 2026 | Hutton Scott | President & CEO, Director | Sell (S) | 1K | $19K |
| Feb 23, 2026 | Cowie Robin Harper | CFO, Sec'y & Treasurer | Sell (S) | 535 | $7K |
| Feb 23, 2026 | Vazquez Chris | Chief Accounting Officer | Sell (S) | 211 | $3K |
| Feb 10, 2026 | Cowie Robin Harper | CFO, Sec'y & Treasurer | Sell (S) | 941 | $9K |
| Feb 10, 2026 | Hutton Scott | President & CEO, Director | Sell (S) | 4K | $36K |
| Feb 10, 2026 | Pestano Gary Anthony | Chief Development Officer | Sell (S) | 540 | $5K |
| Feb 10, 2026 | O'Kane Kieran | Chief Commercial Officer | Sell (S) | 584 | $6K |
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 | 16 | 7 | – |
Insiders Form 4 open-market | 1 | 0 | +$1.0M |
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.
| Class | 13F holders | Value held |
|---|---|---|
| BDSXthis pageStock | 39 funds | $73.2M |
| 09075X108COM | 1 funds | $6.5M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for BDSX
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/BDSX/capital-change-brief"
Use Arkolith's capital_change_brief for BDSX. 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 BDSX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.