Among active 13F managers last quarter, 19 opened and 9 added, while 8 reduced; the largest holder to move was Price T Rowe Associates Inc (13× the prior stake). Over the last 180 days, 2 insiders bought and 8 insiders sold, a net +$37.7M in open-market trades.
Funds lean in and no leg opposes.
85 tracked 13F filers disclose a position in MPLT as of the latest SEC 13F filings, a combined $719.7M 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 | Novo Holdings A/S | 3.7M | $132.1M | —Held | Q2 2026 | |
| 2 | FCPM III Services B.V. | 3.2M | $115.6M | —Held | Q2 2026 | |
| 3 | T. Rowe Price Investment Management, Inc. | 2.8M | Withheld | ▼−0.7% Reduced · −20K sh | Q2 2026 | |
| 4 | Goldman Sachs Group Inc | 2.0M | $40.6M | ▲+3.0% Added · +58K sh | Q1 2026 | |
| 5 | Price T Rowe Associates Inc | 1.4M | $51.0M | ▲13× Added · +1.3M sh | Q2 2026 | |
| 6 | BlackRock, Inc. | 1.0M | $36.7M | ▼−23% Reduced · −315K sh | Q2 2026 | |
| 7 | 5AM Venture Management, LLC | 950K | $34.0M | —Held | Q2 2026 | |
| 8 | Sanofi | 912K | $32.7M | —Held | Q2 2026 | |
| 9 | State Street Corp | 852K | $30.5M | ▲+151% Added · +513K sh | Q2 2026 | |
| 10 | FMR LLC | 824K | $29.5M | ▲+303% Added · +619K sh | Q2 2026 | |
| 11 | Vanguard Capital Management LLC | 784K | $28.1M | ▲+8.9% Added · +64K sh | Q2 2026 | |
| 12 | Blue Owl Capital Holdings LP | 730K | $26.2M | ▼−27% Reduced · −276K sh | Q2 2026 | |
| 13 | Paradigm Biocapital Advisors LP | 686K | $24.6M | ▲New +686K sh | Q2 2026 | |
| 14 | Velan Capital Investment Management LP | 493K | $17.7M | —Held | Q2 2026 | |
| 15 | Siren, L.L.C. | 450K | $16.1M | —Held | Q2 2026 | |
| 16 | Geode Capital Management, LLC | 402K | $14.4M | ▼−16% Reduced · −79K sh | Q2 2026 | |
| 17 | ADAR1 Capital Management, LLC | 375K | $7.6M | ▲New +375K sh | Q1 2026 | |
| 18 | Baker Bros. Advisors LP | 365K | $13.1M | —Held | Q2 2026 | |
| 19 | BNP Paribas Asset Management Holding S.A. | 268K | $5.4M | ▲+81% Added · +120K sh | Q1 2026 | |
| 20 | UBS Group AG | 237K | $4.8M | ▲13× Added · +218K sh | Q1 2026 | |
| 21 | DAFNA Capital Management LLC | 171K | $6.1M | —Held | Q2 2026 | |
| 22 | Freestone Grove Partners LP | 169K | $6.1M | ▼−46% Reduced · −145K sh | Q2 2026 | |
| 23 | Charles Schwab Investment Management Inc | 161K | $3.3M | ▲+16% Added · +23K sh | Q1 2026 | |
| 24 | Northern Trust Corp | 146K | $3.0M | ▲+22% Added · +27K sh | Q1 2026 | |
| 25 | Lazard Asset Management LLC | 142K | $2.9M | ▼−32% Reduced · −65K 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. 1 value row is withheld because the reported units disagree with same-security peers; share counts are unchanged.
Last quarter, 19 funds opened a new position in MPLT and 9 added to an existing one, while 8 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 |
|---|---|---|
| Revolution Medicines IncRVMD | 36 funds | $5.6B |
| Nvidia CorpNVDA | 35 funds | $139.8B |
| Alphabet Inc-CL AGOOGL | 35 funds | $57.6B |
| Eli Lilly & CoLLY | 35 funds | $31.1B |
| Tango Therapeutics IncTNGX | 35 funds | $1.1B |
| Cytokinetics IncCYTK | 35 funds | $572.1M |
| Microsoft CorpMSFT | 34 funds | $74.1B |
| Amazon.com IncAMZN | 34 funds | $58.3B |
| Apple IncAAPL | 33 funds | $94.0B |
| Advanced Micro DevicesAMD | 33 funds | $26.0B |
| Lam Research CorpLRCX | 33 funds | $18.4B |
| Merck & Co. Inc.MRK | 33 funds | $5.7B |
Ranked by how many of MPLT's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MPLT.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 16, 2026 | Hanson Kristopher | General Counsel | Sell (S) | 17K | $193K |
| Aug 14, 2026 | Catalyst4, Inc. | 10% Owner | Buy (P) | 4.4M | $50.1M |
| Aug 3, 2026 | Lillie James Woodruff | Chief Scientific Officer | Sell (S) | 22K | $277K |
| Jul 30, 2026 | Catalyst4, Inc. | 10% Owner | Buy (P) | 1.0M | $13.0M |
| Jul 29, 2026 | Catalyst4, Inc. | 10% Owner | Buy (P) | 3K | $38K |
| Jul 28, 2026 | Catalyst4, Inc. | 10% Owner | Buy (P) 2 lots, same day | 206K | $2.3M |
| Jul 28, 2026 | Cox Troy | Director | Buy (P) | 16K | $149K |
| Jul 17, 2026 | Gillis Jonathan | CAO and Interim CFO | Sell (S) 3 lots, same day | 18K | $694K |
| Jul 17, 2026 | Kreitzer Anatol | Chief Discovery Officer | Sell (S) 3 lots, same day | 17K | $646K |
| Jul 17, 2026 | Foff Erin Pennock | Chief Medical Officer | Sell (S) | 4K | $139K |
| Jul 17, 2026 | Lillie James Woodruff | Chief Scientific Officer | Sell (S) | 2K | $79K |
| Jul 17, 2026 | Hanson Kristopher | General Counsel | Sell (S) | 1K | $43K |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
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 | 27 | 16 | – |
Insiders Form 4 open-market | 2 | 8 | +$37.7M |
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 MPLT
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/MPLT/capital-change-brief"
Use Arkolith's capital_change_brief for MPLT. 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 MPLT. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.