49 tracked 13F filers disclose a position in MPX as of the latest SEC 13F filings, a combined $27.6M 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 | DIMENSIONAL FUND ADVISORS LP | $5.6M | 768K | ▲+2.8% Added · +21K sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $4.5M | 626K | ▼−0.9% Reduced · −6K sh | Q1 2026 | |
| 3 | GAMCO INVESTORS, INC. ET AL | $3.7M | 509K | ▲+1.8% Added · +9K sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $3.3M | 450K | →First observed position No prior filed position | Q1 2026 | |
| 5 | Russell Investments Group, Ltd. | $2.8M | 388K | ▲+25% Added · +78K sh | Q1 2026 | |
| 6 | GABELLI FUNDS LLC | $1.7M | 233K | —Held | Q1 2026 | |
| 7 | Bank of New York Mellon Corp | $1.2M | 159K | ▲+9.8% Added · +14K sh | Q1 2026 | |
| 8 | NORTHERN TRUST CORP | $624K | 86K | ▼−5.4% Reduced · −5K sh | Q1 2026 | |
| 9 | VANGUARD FIDUCIARY TRUST CO | $523K | 72K | →First observed position No prior filed position | Q1 2026 | |
| 10 | RENAISSANCE TECHNOLOGIES LLC | $480K | 66K | ▼−2.6% Reduced · −2K sh | Q1 2026 | |
| 11 | AMERICAN CENTURY COMPANIES INC | $396K | 54K | ▼−28% Reduced · −21K sh | Q1 2026 | |
| 12 | TRUIST FINANCIAL CORP | $393K | 54K | —Held | Q1 2026 | |
| 13 | VANGUARD PORTFOLIO MANAGEMENT LLC | $377K | 52K | →First observed position No prior filed position | Q1 2026 | |
| 14 | GOLDMAN SACHS GROUP INC | $315K | 43K | ▼−1.7% Reduced · −735 sh | Q1 2026 | |
| 15 | MORGAN STANLEY | $223K | 31K | ▼−68% Reduced · −66K sh | Q1 2026 | |
| 16 | Pinnacle Financial Partners, Inc. | $222K | 31K | —Held | Q1 2026 | |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $187K | 26K | ▼−0.1% Reduced · −25 sh | Q1 2026 | |
| 18 | PRICE T ROWE ASSOCIATES INC /MD/ | $148K | 20K | ▲+26% Added · +4K sh | Q1 2026 | |
| 19 | Nuveen, LLC | $142K | 20K | ▲+0.6% Added · +117 sh | Q1 2026 | |
| 20 | UBS Group AG | $113K | 16K | ▲+281% Added · +12K sh | Q1 2026 | |
| 21 | BANK OF AMERICA CORP /DE/ | $89K | 12K | ▲+14% Added · +2K sh | Q1 2026 | |
| 22 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $87K | 12K | ▲+20% Added · +2K sh | Q1 2026 | |
| 23 | RHUMBLINE ADVISERS | $78K | 11K | ▼−0.2% Reduced · −18 sh | Q1 2026 | |
| 24 | ALLIANCEBERNSTEIN L.P. | $91K | 10K | —Held | Q1 2026 | |
| 25 | OSAIC HOLDINGS, INC. | $46K | 6K | ▼−6.8% Reduced · −458 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, 1 fund opened a new position in MPX and 6 added to an existing one, while 3 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 | 13 funds | $159.2B |
| APPLE INCAAPL | 13 funds | $121.3B |
| MICROSOFT CORPMSFT | 13 funds | $108.9B |
| BROADCOM INCAVGO | 13 funds | $63.1B |
| ALPHABET INC-CL AGOOGL | 13 funds | $56.0B |
| ALPHABET INC-CL CGOOG | 13 funds | $54.2B |
| META PLATFORMS INC-CLASS AMETA | 13 funds | $45.2B |
| ELI LILLY & COLLY | 13 funds | $31.9B |
| TESLA INCTSLA | 13 funds | $26.7B |
| VISA INC-CLASS A SHARESV | 13 funds | $26.4B |
| MASTERCARD INC - AMA | 13 funds | $22.2B |
| JPMORGAN CHASE & COJPM | 13 funds | $22.1B |
Ranked by how many of MPX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Mar 11, 2021 | PALMER BEN M | VP, CFO and Corp Secy | Sell (S) | 4K | $66K |
| Mar 10, 2021 | PALMER BEN M | VP, CFO and Corp Secy | Sell (S) | 2K | $45K |
| Jan 29, 2021 | Bell Susan R. | Director | Buy (P) | 1K | $16K |
| Jan 29, 2021 | Gunning Patrick J. | Director | Buy (P) | 2K | $33K |
| Jan 28, 2021 | CYNKUS HARRY J | Director | Buy (P) | 750 | $12K |
| Jan 28, 2021 | Bell Susan R. | Director | Buy (P) | 2K | $25K |
| May 29, 2018 | PALMER BEN M | VP, CFO, & Corporate Secretary | Sell (S) | 2K | $28K |
| May 25, 2018 | PALMER BEN M | VP, CFO, & Corporate Secretary | Sell (S) | 2K | $30K |
| May 21, 2018 | PALMER BEN M | VP, CFO, & Corporate Secretary | Sell (S) | 513 | $8K |
| May 18, 2018 | PALMER BEN M | VP, CFO, & Corporate Secretary | Sell (S) | 7K | $109K |
| May 17, 2018 | PALMER BEN M | VP, CFO, & Corporate Secretary | Sell (S) | 800 | $13K |
| May 16, 2018 | PALMER BEN M | VP, CFO, & Corporate Secretary | Sell (S) | 940 | $15K |
Connected entities for MPX
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/MPX/capital-change-brief"
Use Arkolith's capital_change_brief for MPX. 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 MPX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.