757 tracked 13F filers disclose a position in MDB as of the latest SEC 13F filings, a combined $18.0B 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. | $1.4B | 5.7M | ▼−1.1% Reduced · −62K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $1.1B | 4.5M | →First observed position No prior filed position | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $861.3M | 3.5M | →First observed position No prior filed position | Q1 2026 | |
| 4 | FMR LLC | $536.8M | 2.2M | ▼−7.9% Reduced · −188K sh | Q1 2026 | |
| 5 | PRICE T ROWE ASSOCIATES INC /MD/ | $512.2M | 2.1M | ▲+12% Added · +228K sh | Q1 2026 | |
| 6 | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt | $478.1M | 2.0M | ▲+65% Added · +767K sh | Q1 2026 | |
| 7 | STATE STREET CORP | $649.6M | 1.9M | ▲+4.9% Added · +90K sh | Q2 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $520.9M | 1.6M | ▲+1.8% Added · +27K sh | Q2 2026 | |
| 9 | NORGES BANK | $574.8M | 1.4M | ▲+75% Added · +587K sh | Q4 2025 | |
| 10 | AQR CAPITAL MANAGEMENT LLC | $318.5M | 1.3M | ▲+128% Added · +736K sh | Q1 2026 | |
| 11 | Artisan Partners Limited Partnership | $300.4M | 1.2M | ▲+186% Added · +799K sh | Q1 2026 | |
| 12 | MORGAN STANLEY | $298.1M | 1.2M | ▼−12% Reduced · −163K sh | Q1 2026 | |
| 13 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $265.5M | 1.1M | ▼−6.1% Reduced · −70K sh | Q1 2026 | |
| 14 | ValueAct Holdings, L.P. | $254.0M | 1.0M | ▼−26% Reduced · −369K sh | Q1 2026 | |
| 15 | JPMORGAN CHASE & CO | $243.2M | 1.0M | ▲+1.1% Added · +12K sh | Q1 2026 | |
| 16 | Jericho Capital Asset Management L.P. | $243.9M | 997K | —Held | Q1 2026 | |
| 17 | D. E. Shaw & Co., Inc. | $228.0M | 932K | ▼−36% Reduced · −526K sh | Q1 2026 | |
| 18 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $220.2M | 892K | ▲+25% Added · +177K sh | Q1 2026 | |
| 19 | PRIMECAP MANAGEMENT CO/CA/ | $206.3M | 843K | ▼−0.7% Reduced · −6K sh | Q1 2026 | |
| 20 | SRS Investment Management, LLC | $248.1M | 739K | ▲+40% Added · +212K sh | Q2 2026 | |
| 21 | Polar Capital Holdings Plc | $231.5M | 689K | ▲+108% Added · +358K sh | Q2 2026 | |
| 22 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $164.5M | 672K | ▼−50% Reduced · −664K sh | Q1 2026 | |
| 23 | T. Rowe Price Investment Management, Inc. | Withheld | 665K | ▲+16% Added · +90K sh | Q1 2026 | |
| 24 | Qube Research & Technologies Ltd | $149.2M | 610K | ▲+106% Added · +314K sh | Q1 2026 | |
| 25 | Swedbank AB | $142.1M | 581K | ▼−20% Reduced · −149K 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, 3 funds opened a new position in MDB and 35 added to an existing one, while 25 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 | 469 funds | $487.9B |
| AMAZON.COM INCAMZN | 465 funds | $259.0B |
| MICROSOFT CORPMSFT | 464 funds | $332.4B |
| META PLATFORMS INC-CLASS AMETA | 455 funds | $142.6B |
| ALPHABET INC-CL AGOOGL | 453 funds | $220.8B |
| BROADCOM INCAVGO | 451 funds | $194.8B |
| APPLE INCAAPL | 446 funds | $361.0B |
| ELI LILLY & COLLY | 435 funds | $102.0B |
| MICRON TECHNOLOGY INCMU | 434 funds | $64.5B |
| ADVANCED MICRO DEVICESAMD | 434 funds | $49.8B |
| VISA INC-CLASS A SHARESV | 429 funds | $76.5B |
| ALPHABET INC-CL CGOOG | 428 funds | $149.9B |
Ranked by how many of MDB's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 17, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 120 | $55K |
| Aug 17, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 80 | $36K |
| Aug 17, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 2K | $986K |
| Aug 17, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 460 | $208K |
| Aug 17, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 522 | $236K |
| Aug 17, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 2K | $744K |
| Aug 17, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 992 | $445K |
| Aug 14, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 3K | $1.5M |
| Aug 14, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 7K | $3.2M |
| Jul 16, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 3K | $925K |
| Jul 16, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 80 | $26K |
| Jul 16, 2026 | MERRIMAN DWIGHT A | Director | Sell (S) | 81 | $27K |
Connected entities for MDB
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/MDB/capital-change-brief"
Use Arkolith's capital_change_brief for MDB. 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 MDB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.