Among active 13F managers last quarter, 2 added and 4 reduced; the largest holder to move was Renaissance Technologies LLC (−1.4%). No open-market insider trades in the last 180 days.
Funds lean out and no leg opposes.
24 tracked 13F filers disclose a position in MTNB as of the latest SEC 13F filings, a combined $177K 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 | BlackRock, Inc. | 50K | $31K | ▲+1.2% Added · +612 sh | Q2 2026 | |
| 2 | Geode Capital Management, LLC | 49K | $30K | ▼−25% Reduced · −16K sh | Q2 2026 | |
| 3 | Vanguard Capital Management LLC | 40K | $25K | —Held | Q2 2026 | |
| 4 | Holos Integrated Wealth LLC | 32K | $20K | —Held | Q2 2026 | |
| 5 | Renaissance Technologies LLC | 29K | $14K | ▼−1.4% Reduced · −400 sh | Q1 2026 | |
| 6 | XTX Topco Ltd | 21K | $10K | ▲+22% Added · +4K sh | Q1 2026 | |
| 7 | Vanguard Fiduciary Trust Co | 17K | $11K | ▼−5.3% Reduced · −961 sh | Q2 2026 | |
| 8 | Citadel Advisors LLC | 15K | $9K | ▼−70% Reduced · −36K sh | Q2 2026 | |
| 9 | State Street Corp | 15K | $9K | —Held | Q2 2026 | |
| 10 | Susquehanna International Group, LLP | 14K | $7K | ▼−32% Reduced · −7K sh | Q1 2026 | |
| 11 | Sargent Investment Group, LLC | 13K | $8K | —Held | Q2 2026 | |
| 12 | Tower Research Capital LLC (TRC) | 3K | $1K | ▼−0.3% Reduced · −8 sh | Q1 2026 | |
| 13 | Vanguard Global Advisers, LLC | 1K | $819 | —Held | Q2 2026 | |
| 14 | Morgan Stanley | 344 | $172 | ▼−39% Reduced · −217 sh | Q1 2026 | |
| 15 | UBS Group AG | 184 | $92 | ▼−70% Reduced · −423 sh | Q1 2026 | |
| 16 | Wells Fargo & Company | 102 | $51 | —Held | Q1 2026 | |
| 17 | Jones Financial Companies LLLP | 60 | $34 | —Held | Q1 2026 | |
| 18 | EverSource Wealth Advisors, LLC | 60 | $30 | —Held | Q1 2026 | |
| 19 | Osaic Holdings, Inc. | 50 | $25 | —Held | Q1 2026 | |
| 20 | Vision Financial Markets LLC | 40 | $26 | —Held | Q2 2026 | |
| 21 | Rothschild Investment LLC | 14 | $9 | —Held | Q2 2026 | |
| 22 | SBI Securities Co., Ltd. | 12 | $7 | ▲+9.1% Added · +1 sh | Q2 2026 | |
| 23 | Farther Finance Advisors, LLC | 5 | $3 | ▼−99% Reduced · −417 sh | Q1 2026 | |
| 24 | Bogart Wealth, LLC | 2 | $1 | ▲New +2 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, 2 funds added to an existing position in MTNB, 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 | 9 funds | $3.7B |
| Apple IncAAPL | 9 funds | $3.6B |
| Microsoft CorpMSFT | 9 funds | $1.8B |
| Micron Technology IncMU | 9 funds | $1.7B |
| Alphabet Inc-CL AGOOGL | 9 funds | $1.6B |
| Broadcom IncAVGO | 9 funds | $1.5B |
| Palantir Technologies Inc-APLTR | 9 funds | $1.4B |
| Eli Lilly & CoLLY | 9 funds | $1.3B |
| Alphabet Inc-CL CGOOG | 9 funds | $1.2B |
| Chevron CorpCVX | 9 funds | $1.1B |
| JPMorgan Chase & CoJPM | 9 funds | $1.1B |
| Advanced Micro DevicesAMD | 9 funds | $1.1B |
Ranked by how many of MTNB's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MTNB.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 21, 2020 | Stern Adam K | Director | Buy (P) | 20K | $17K |
| May 14, 2020 | Lepore Patrick G | Director | Buy (P) | 100K | $73K |
| Mar 17, 2020 | Jabbour Jerome D | President and CEO, Director | Buy (P) | 10K | $7K |
| Mar 17, 2020 | Stern Adam K | Director | Buy (P) | 10K | $7K |
| Nov 25, 2019 | Kucinski Keith A | Chief Financial Officer | Buy (P) | 58K | $71K |
| Nov 22, 2019 | Kucinski Keith A | Chief Financial Officer | Buy (P) | 37K | $44K |
| Nov 15, 2019 | Lepore Patrick G | Director | Buy (P) | 100K | $106K |
| Aug 20, 2019 | Ende Eric J | Director | Buy (P) | 20K | $13K |
| Aug 19, 2019 | Stern Adam K | Director | Buy (P) | 10K | $7K |
| Aug 19, 2019 | Ende Eric J | Director | Buy (P) | 20K | $14K |
| Aug 19, 2019 | Jabbour Jerome D | President and CEO, Director | Buy (P) | 15K | $10K |
| Aug 16, 2019 | Lepore Patrick G | Director | Buy (P) | 100K | $72K |
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 | 3 | 9 | – |
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 MTNB
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/MTNB/capital-change-brief"
Use Arkolith's capital_change_brief for MTNB. 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 MTNB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.