Among active 13F managers last quarter, 3 opened and 16 added, while 5 reduced; the largest holder to move was Arax Advisory Partners (+588%). Over the last 180 days, 1 insider bought and none sold, a net +$37.5M in open-market trades.
Funds lean in and no leg opposes.
66 tracked 13F filers disclose a position in MESO as of the latest SEC 13F filings, a combined $48.4M 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. | 664K | $9.0M | ▲+5.3% Added · +33K sh | Q2 2026 | |
| 2 | Morgan Stanley | 514K | $7.9M | ▼−14% Reduced · −83K sh | Q1 2026 | |
| 3 | Goldman Sachs Group Inc | 397K | $6.1M | ▲+0.3% Added · +1K sh | Q1 2026 | |
| 4 | Susquehanna International Group, LLP | 386K | $5.9M | ▼−10% Reduced · −43K sh | Q1 2026 | |
| 5 | Arax Advisory Partners | 168K | $2.3M | ▲+588% Added · +144K sh | Q2 2026 | |
| 6 | UBS Group AG | 133K | $2.0M | ▲+83% Added · +60K sh | Q1 2026 | |
| 7 | Bank Of America Corp | 100K | $1.5M | ▲+608% Added · +86K sh | Q1 2026 | |
| 8 | Jane Street Group, LLC | 99K | $1.5M | ▼−41% Reduced · −69K sh | Q1 2026 | |
| 9 | Penbrook Management LLC | 87K | $1.2M | —Held | Q2 2026 | |
| 10 | M&G Plc | 59K | $887K | ▲New +59K sh | Q1 2026 | |
| 11 | Quadrature Capital Ltd | 53K | $719K | ▲+208% Added · +36K sh | Q2 2026 | |
| 12 | LPL Financial LLC | 50K | $763K | ▲+1.8% Added · +870 sh | Q1 2026 | |
| 13 | Lazari Capital Management, Inc. | 47K | $642K | ▲+2.8% Added · +1K sh | Q2 2026 | |
| 14 | Rialto Wealth Management, LLC | 47K | $629K | —Held | Q2 2026 | |
| 15 | Group One Trading LLC | 44K | $596K | ▼−48% Reduced · −40K sh | Q2 2026 | |
| 16 | XTX Topco Ltd | 41K | $629K | ▲+227% Added · +28K sh | Q1 2026 | |
| 17 | Two Sigma Investments, LP | 40K | $612K | ▼−31% Reduced · −18K sh | Q1 2026 | |
| 18 | Squarepoint Ops LLC | 34K | $524K | ▲+83% Added · +15K sh | Q1 2026 | |
| 19 | Geode Capital Management, LLC | 34K | $457K | —Held | Q2 2026 | |
| 20 | &Partners | 28K | $373K | ▲+2.3% Added · +621 sh | Q2 2026 | |
| 21 | Citigroup Inc | 26K | $407K | ▲+0.2% Added · +65 sh | Q1 2026 | |
| 22 | Royal Bank Of Canada | 26K | $404K | ▲+23% Added · +5K sh | Q1 2026 | |
| 23 | AQR Capital Management LLC | 25K | $390K | ▲+0.5% Added · +129 sh | Q1 2026 | |
| 24 | Vanguard Personalized Indexing Management, LLC | 18K | $249K | ▲+31% Added · +4K sh | Q2 2026 | |
| 25 | Wells Fargo & Company | 18K | $278K | —Held | 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, 3 funds opened a new position in MESO and 16 added to an existing one, while 5 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 | 28 funds | $14.8B |
| Amazon.com IncAMZN | 28 funds | $7.9B |
| Cisco Systems IncCSCO | 28 funds | $845.3M |
| Apple IncAAPL | 27 funds | $12.0B |
| Microsoft CorpMSFT | 27 funds | $9.6B |
| Alphabet Inc-CL CGOOG | 27 funds | $3.9B |
| Bristol-Myers Squibb CoBMY | 27 funds | $3.2B |
| Berkshire Hathaway Inc-CL BBRK/B | 27 funds | $2.8B |
| Eli Lilly & CoLLY | 27 funds | $2.5B |
| JPMorgan Chase & CoJPM | 27 funds | $2.4B |
| Merck & Co. Inc.MRK | 27 funds | $1.8B |
| Intel CorpINTC | 27 funds | $1.8B |
Ranked by how many of MESO's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MESO.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Apr 10, 2026 | George Gregory | Director, 10% Owner | Buy (P) 2 lots, same day | 4.6M | $6.9M |
| Apr 9, 2026 | George Gregory | Director, 10% Owner | Buy (P) 26 lots, same day | 3.6M | $19.3M |
| Apr 4, 2026 | George Gregory | Director, 10% Owner | Buy (P) 2 lots, same day | 8.0M | $11.4M |
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 | 33 | 12 | – |
Insiders Form 4 open-market | 1 | 0 | +$37.5M |
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 MESO
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/MESO/capital-change-brief"
Use Arkolith's capital_change_brief for MESO. 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 MESO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.