128 tracked 13F filers disclose a position in MAMA as of the latest SEC 13F filings, a combined $390.5M 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 | BlackRock, Inc. | $33.0M | 2.2M | ▼−0.1% Reduced · −3K sh | Q1 2026 | |
| 2 | WASATCH ADVISORS LP | $32.3M | 1.8M | ▼−13% Reduced · −265K sh | Q2 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $24.5M | 1.6M | →First observed position No prior filed position | Q1 2026 | |
| 4 | JANUS HENDERSON GROUP PLC | $19.9M | 1.3M | ▼−2.3% Reduced · −31K sh | Q1 2026 | |
| 5 | First Eagle Investment Management, LLC | $18.8M | 1.2M | ▼−4.2% Reduced · −54K sh | Q1 2026 | |
| 6 | Portolan Capital Management, LLC | $18.1M | 1.2M | ▼−5.5% Reduced · −69K sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $15.6M | 1.0M | ▲+13% Added · +118K sh | Q1 2026 | |
| 8 | Park West Asset Management LLC | $12.3M | 800K | —Held | Q1 2026 | |
| 9 | STATE STREET CORP | $11.6M | 759K | ▲+3.4% Added · +25K sh | Q1 2026 | |
| 10 | Ophir Asset Management Pty Ltd | $11.4M | 745K | ▲New +745K sh | Q1 2026 | |
| 11 | Russell Investments Group, Ltd. | $10.3M | 670K | ▼−2.0% Reduced · −14K sh | Q1 2026 | |
| 12 | FEDERATED HERMES, INC. | $9.4M | 610K | ▲2k× Added · +610K sh | Q1 2026 | |
| 13 | RAYMOND JAMES FINANCIAL INC | $7.8M | 512K | ▲+194% Added · +338K sh | Q1 2026 | |
| 14 | DIMENSIONAL FUND ADVISORS LP | $7.6M | 495K | ▼−4.8% Reduced · −25K sh | Q1 2026 | |
| 15 | SILVERCREST ASSET MANAGEMENT GROUP LLC | $7.5M | 486K | ▼−27% Reduced · −179K sh | Q1 2026 | |
| 16 | Uniplan Investment Counsel, Inc. | $7.4M | 485K | ▼−5.6% Reduced · −29K sh | Q1 2026 | |
| 17 | GOLDMAN SACHS GROUP INC | $6.5M | 423K | ▲+114% Added · +225K sh | Q1 2026 | |
| 18 | Alyeska Investment Group, L.P. | $6.1M | 400K | —Held | Q1 2026 | |
| 19 | NICHOLAS COMPANY, INC. | $6.0M | 393K | ▼−0.5% Reduced · −2K sh | Q1 2026 | |
| 20 | DIAMOND HILL CAPITAL MANAGEMENT INC | $5.9M | 387K | ▼−19% Reduced · −91K sh | Q1 2026 | |
| 21 | ArrowMark Colorado Holdings LLC | $5.8M | 380K | —Held | Q1 2026 | |
| 22 | Calamos Advisors LLC | $5.5M | 361K | ▼−1.1% Reduced · −4K sh | Q1 2026 | |
| 23 | RENAISSANCE TECHNOLOGIES LLC | $5.5M | 361K | ▲+5.7% Added · +19K sh | Q1 2026 | |
| 24 | MORGAN STANLEY | $5.3M | 345K | ▲+13% Added · +40K sh | Q1 2026 | |
| 25 | Manatuck Hill Partners, LLC | $5.1M | 336K | —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, 6 funds opened a new position in MAMA and 13 added to an existing one, while 26 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 |
|---|---|---|
| MICROSOFT CORPMSFT | 48 funds | $13.9B |
| NVIDIA CORPNVDA | 45 funds | $21.0B |
| ALPHABET INC-CL AGOOGL | 44 funds | $9.2B |
| JPMORGAN CHASE & COJPM | 44 funds | $3.9B |
| APPLE INCAAPL | 43 funds | $15.5B |
| AMAZON.COM INCAMZN | 43 funds | $11.8B |
| META PLATFORMS INC-CLASS AMETA | 43 funds | $8.1B |
| HOME DEPOT INCHD | 43 funds | $2.1B |
| UNITEDHEALTH GROUP INCUNH | 43 funds | $1.3B |
| VISA INC-CLASS A SHARESV | 42 funds | $3.5B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 42 funds | $3.3B |
| CHEVRON CORPCVX | 42 funds | $1.6B |
Ranked by how many of MAMA's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jul 8, 2026 | Tappan Moore III | Chief Operating Officer | Sell (S) | 472 | $9K |
| Apr 16, 2026 | Michaels Adam Laurance | Chief Executive Officer, Director | Sell (S) | 15K | $235K |
| Apr 16, 2026 | Michaels Adam Laurance | Chief Executive Officer, Director | Sell (S) | 844 | $13K |
| Oct 13, 2025 | Michaels Adam Laurance | Chief Executive Officer, Director | Sell (S) | 4K | $38K |
| Oct 3, 2025 | Tappan Moore III | Chief Operating Officer | Sell (S) | 2K | $21K |
| Sep 23, 2025 | Michaels Adam Laurance | Chief Executive Officer, Director | Sell (S) | 65K | $710K |
| Sep 18, 2025 | Romig Shirley | Director | Sell (S) | 4K | $41K |
| Dec 21, 2023 | Brown Matthew | 10% Owner | Sell (S) | 2.8M | $9.9M |
| Dec 21, 2023 | Brown Matthew | 10% Owner | Sell (S) | 2.8M | $9.9M |
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/MAMA/capital-change-brief"
Use Arkolith's capital_change_brief for MAMA. 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 MAMA. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.