46 tracked 13F filers disclose a position in MGX as of the latest SEC 13F filings, a combined $8.0M 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 | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | $1.4M | 1.1M | →First observed position No prior filed position | Q1 2026 | |
| 2 | RENAISSANCE TECHNOLOGIES LLC | $1.1M | 788K | ▲+25% Added · +160K sh | Q1 2026 | |
| 3 | Catalio Capital Management, LP | $630K | 529K | —Held | Q2 2026 | |
| 4 | Peapod Lane Capital LLC | $625K | 525K | ▲+1.6% Added · +8K sh | Q2 2026 | |
| 5 | TWO SIGMA INVESTMENTS, LP | $666K | 497K | ▲+13% Added · +55K sh | Q1 2026 | |
| 6 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $530K | 396K | —Held | Q1 2026 | |
| 7 | JACOBS LEVY EQUITY MANAGEMENT, INC | $512K | 382K | ▲New +382K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $344K | 289K | ▼−19% Reduced · −70K sh | Q2 2026 | |
| 9 | BlackRock, Inc. | $308K | 230K | ▲+2.7% Added · +6K sh | Q1 2026 | |
| 10 | WELLS FARGO & COMPANY/MN | $271K | 202K | ▲+71% Added · +84K sh | Q1 2026 | |
| 11 | VANGUARD FIDUCIARY TRUST CO | $228K | 170K | →First observed position No prior filed position | Q1 2026 | |
| 12 | MILLENNIUM MANAGEMENT LLC | $228K | 170K | ▼−28% Reduced · −65K sh | Q1 2026 | |
| 13 | JANE STREET GROUP, LLC | $203K | 151K | ▼−65% Reduced · −282K sh | Q1 2026 | |
| 14 | STATE STREET CORP | $143K | 120K | ▼−0.5% Reduced · −577 sh | Q2 2026 | |
| 15 | Man Group plc | $130K | 109K | ▲+39% Added · +30K sh | Q2 2026 | |
| 16 | Resolute Advisors LLC | $107K | 90K | —Held | Q2 2026 | |
| 17 | NORTHERN TRUST CORP | $101K | 75K | —Held | Q1 2026 | |
| 18 | Marquette Asset Management, LLC | $86K | 72K | ▲New +72K sh | Q2 2026 | |
| 19 | BBR PARTNERS, LLC | $72K | 53K | —Held | Q1 2026 | |
| 20 | XTX Topco Ltd | $54K | 41K | ▼−41% Reduced · −28K sh | Q1 2026 | |
| 21 | Fortitude Advisory Group L.L.C. | $44K | 37K | —Held | Q2 2026 | |
| 22 | MORGAN STANLEY | $37K | 28K | ▼−54% Reduced · −32K sh | Q1 2026 | |
| 23 | MARSHALL WACE, LLP | $37K | 28K | ▼−65% Reduced · −52K sh | Q1 2026 | |
| 24 | CITADEL ADVISORS LLC | $23K | 17K | ▼−90% Reduced · −161K sh | Q1 2026 | |
| 25 | LPL Financial LLC | $23K | 17K | ▲+49% Added · +6K 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 opened a new position in MGX and 6 added to an existing one, while 7 reduced and 0 exited entirely — 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 | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 21 funds | $20.4B |
| COSTCO WHOLESALE CORPCOST | 21 funds | $3.0B |
| ELI LILLY & COLLY | 21 funds | $2.6B |
| MICROSOFT CORPMSFT | 20 funds | $9.2B |
| ALPHABET INC-CL AGOOGL | 20 funds | $6.9B |
| BROADCOM INCAVGO | 20 funds | $6.7B |
| META PLATFORMS INC-CLASS AMETA | 20 funds | $6.2B |
| ALPHABET INC-CL CGOOG | 20 funds | $5.5B |
| CHEVRON CORPCVX | 20 funds | $3.1B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 20 funds | $2.6B |
| VISA INC-CLASS A SHARESV | 20 funds | $2.1B |
| LAM RESEARCH CORPLRCX | 20 funds | $1.9B |
Ranked by how many of MGX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 5, 2026 | Wapnick Pamela | Chief Financial Officer | Sell (S) | 3K | $4K |
| Jun 5, 2026 | Irish Jian | See Remarks, Director | Sell (S) | 4K | $5K |
| Jun 5, 2026 | Wein Matthew | See Remarks | Sell (S) | 558 | $725 |
| Mar 5, 2026 | Irish Jian | Chief Executive Officer, Director | Sell (S) | 2K | $3K |
| Mar 5, 2026 | Wein Matthew | See Remarks | Sell (S) | 482 | $771 |
| Mar 5, 2026 | Wapnick Pamela | Chief Financial Officer | Sell (S) | 2K | $3K |
| Dec 5, 2025 | Irish Jian | Chief Executive Officer, Director | Sell (S) | 2K | $3K |
| Dec 5, 2025 | Wapnick Pamela | Chief Financial Officer | Sell (S) | 2K | $3K |
| Dec 5, 2025 | Wein Matthew | See Remarks | Sell (S) | 199 | $352 |
| Dec 5, 2025 | Thomas Brian C. | Director | Sell (S) | 4K | $7K |
| Sep 5, 2025 | Wein Matthew | See Remarks | Sell (S) | 199 | $360 |
| Sep 5, 2025 | Irish Jian | Chief Executive Officer, Director | Sell (S) | 2K | $3K |
Connected entities for MGX
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/MGX/capital-change-brief"
Use Arkolith's capital_change_brief for MGX. 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 MGX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.