Among active 13F managers last quarter, 1 added and 1 reduced; the largest holder to move was Tower Research Capital LLC (TRC) (−7.0%). No open-market insider trades in the last 180 days.
No leg leans either way.
16 tracked 13F filers disclose a position in MXC as of the latest SEC 13F filings, a combined $2.2M 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 | First Manhattan Co. LLC. | 70K | $522K | ▲+72% Added · +29K sh | Q2 2026 | |
| 2 | Northern Trust Corp | 57K | $586K | ▼~0% Reduced · −17 sh | Q1 2026 | |
| 3 | Vanguard Capital Management LLC | 56K | $416K | —Held | Q2 2026 | |
| 4 | Dimensional Fund Advisors LP | 38K | $392K | ▲+2.6% Added · +957 sh | Q1 2026 | |
| 5 | Jane Street Group, LLC | 12K | $125K | ▲New +12K sh | Q1 2026 | |
| 6 | Corient Private Wealth LP | 10K | $103K | ▼−31% Reduced · −5K sh | Q1 2026 | |
| 7 | Vanguard Fiduciary Trust Co | 6K | $48K | —Held | Q2 2026 | |
| 8 | Caldwell Sutter Capital, Inc. | 4K | $30K | —Held | Q2 2026 | |
| 9 | Tower Research Capital LLC (TRC) | 372 | $4K | ▼−7.0% Reduced · −28 sh | Q1 2026 | |
| 10 | Morgan Stanley | 200 | $2K | ▲New +200 sh | Q1 2026 | |
| 11 | FMR LLC | 160 | $1K | —Held | Q2 2026 | |
| 12 | Citigroup Inc | 75 | $767 | ▲75× Added · +74 sh | Q1 2026 | |
| 13 | NewEdge Advisors, LLC | 22 | $165 | —Held | Q2 2026 | |
| 14 | SBI Securities Co., Ltd. | 14 | $105 | ▲+40% Added · +4 sh | Q2 2026 | |
| 15 | UBS Group AG | 5 | $51 | ▼−95% Reduced · −97 sh | Q1 2026 | |
| 16 | Royal Bank Of Canada | 3 | $0 | ▲+50% Added · +1 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 added to an existing position in MXC, 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 | 3 funds | $540.2M |
| Invesco QQQ Trust Series 1QQQ | 3 funds | $279.1M |
| Apple IncAAPL | 3 funds | $261.6M |
| Vanguard S&P 500 ETFVOO | 3 funds | $251.6M |
| Micron Technology IncMU | 3 funds | $220.8M |
| Tesla IncTSLA | 3 funds | $178.1M |
| Microsoft CorpMSFT | 3 funds | $170.5M |
| Alphabet Inc-CL AGOOGL | 3 funds | $159.4M |
| Vanguard Tot World STK ETFVT | 3 funds | $124.6M |
| Amazon.com IncAMZN | 3 funds | $122.1M |
| Alphabet Inc-CL CGOOG | 3 funds | $97.7M |
| Broadcom IncAVGO | 3 funds | $79.8M |
Ranked by how many of MXC's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MXC.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Mar 5, 2026 | Decker Thomas H | Director | Sell (S) 2 lots, same day | 5K | $70K |
| Apr 15, 2024 | McComic Tammy | PRESIDENT | Sell (S) | 147 | $2K |
| Apr 15, 2024 | Hardin Stacy D. | SECRETARY | Sell (S) | 147 | $2K |
| Apr 9, 2024 | McComic Tammy | PRESIDENT | Sell (S) 3 lots, same day | 2K | $20K |
| Apr 9, 2024 | Hardin Stacy D. | SECRETARY | Sell (S) 4 lots, same day | 800 | $11K |
| Apr 8, 2024 | McComic Tammy | PRESIDENT | Sell (S) | 500 | $7K |
| Apr 8, 2024 | Hardin Stacy D. | SECRETARY | Sell (S) | 450 | $6K |
| Apr 4, 2024 | McComic Tammy | PRESIDENT | Sell (S) | 394 | $5K |
| Apr 2, 2024 | McComic Tammy | PRESIDENT | Sell (S) | 7K | $89K |
| Mar 16, 2023 | Decker Thomas H | Director | Buy (P) 2 lots, same day | 2K | $20K |
| Mar 15, 2023 | Decker Thomas H | Director | Buy (P) | 47 | $505 |
| Dec 9, 2022 | Decker Thomas H | Director | Buy (P) | 3K | $33K |
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 | 5 | 4 | – |
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 MXC
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/MXC/capital-change-brief"
Use Arkolith's capital_change_brief for MXC. 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 MXC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.