Among active 13F managers last quarter, 4 opened and 1 reduced; the largest holder to move was Citadel Advisors LLC (new position). No open-market insider trades in the last 180 days.
Funds lean in and no leg opposes.
18 tracked 13F filers disclose a position in MGRX as of the latest SEC 13F filings, a combined $403K 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 | Citadel Advisors LLC | 339K | $129K | ▲New +339K sh | Q2 2026 | |
| 2 | Geode Capital Management, LLC | 156K | $59K | ▼−20% Reduced · −38K sh | Q2 2026 | |
| 3 | Ikarian Capital, LLC | 138K | $52K | —Held | Q2 2026 | |
| 4 | Vanguard Capital Management LLC | 123K | $47K | —Held | Q2 2026 | |
| 5 | Jane Street Group, LLC | 73K | $26K | ▲+53% Added · +25K sh | Q1 2026 | |
| 6 | Vanguard Fiduciary Trust Co | 57K | $22K | —Held | Q2 2026 | |
| 7 | Boothbay Fund Management, LLC | 38K | $15K | —Held | Q2 2026 | |
| 8 | Northern Trust Corp | 38K | $14K | —Held | Q1 2026 | |
| 9 | Ackerman Capital Advisors, LLC | 35K | $13K | —Held | Q2 2026 | |
| 10 | ACT Advisors, LLC. | 27K | $10K | ▲New +27K sh | Q2 2026 | |
| 11 | XTX Topco Ltd | 13K | $5K | ▲New +13K sh | Q1 2026 | |
| 12 | Goldman Sachs Group Inc | 12K | $4K | ▲New +12K sh | Q1 2026 | |
| 13 | Csenge Advisory Group | 10K | $4K | —Held | Q2 2026 | |
| 14 | Osaic Holdings, Inc. | 3K | $1K | ▲+14% Added · +400 sh | Q1 2026 | |
| 15 | Ameriflex Group, Inc. | 3K | $1K | ▲New +3K sh | Q2 2026 | |
| 16 | Fortitude Family Office, LLC | 1K | $510 | —Held | Q2 2026 | |
| 17 | Morgan Stanley | 1K | $360 | —Held | Q1 2026 | |
| 18 | Tower Research Capital LLC (TRC) | 785 | $283 | ▼−22% Reduced · −217 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, 4 funds opened a new position in MGRX, while 1 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 | $2.5B |
| Apple IncAAPL | 9 funds | $2.3B |
| Microsoft CorpMSFT | 9 funds | $1.5B |
| Eli Lilly & CoLLY | 9 funds | $1.2B |
| Broadcom IncAVGO | 9 funds | $1.2B |
| Alphabet Inc-CL AGOOGL | 9 funds | $1.2B |
| JPMorgan Chase & CoJPM | 9 funds | $773.9M |
| Tesla IncTSLA | 9 funds | $607.6M |
| Berkshire Hathaway Inc-CL BBRK/B | 9 funds | $579.0M |
| Johnson & JohnsonJNJ | 9 funds | $413.4M |
| Visa Inc-Class A SharesV | 9 funds | $312.3M |
| Amazon.com IncAMZN | 8 funds | $2.7B |
Ranked by how many of MGRX's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MGRX.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Dec 15, 2025 | Johnston Eugene M | CFO | Sell (S) | 3K | $4K |
| Dec 9, 2025 | Johnston Eugene M | CFO | Sell (S) | 5K | $6K |
| Dec 5, 2025 | Johnston Eugene M | CFO | Sell (S) | 10K | $11K |
| Nov 19, 2025 | Hamilton Alex P. | Director | Sell (S) | 125K | $153K |
| Jun 26, 2024 | Hamilton Alex P. | Director | Sell (S) | 108K | $35K |
| Jun 25, 2024 | Hamilton Alex P. | Director | Sell (S) | 17K | $5K |
| Apr 10, 2023 | Tiger Cub Trust | 10% Owner | Buy (P) | 275K | $275K |
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 | 2 | 2 | – |
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 MGRX
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/MGRX/capital-change-brief"
Use Arkolith's capital_change_brief for MGRX. 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 MGRX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.