291 tracked 13F filers disclose a position in MIRM as of the latest SEC 13F filings, a combined $6.6B 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 | Frazier Life Sciences Management, L.P. | $899.1M | 7.7M | —Held | Q2 2026 | |
| 2 | JANUS HENDERSON GROUP PLC | $641.8M | 6.9M | ▲+15% Added · +881K sh | Q1 2026 | |
| 3 | BlackRock, Inc. | $355.3M | 3.8M | ▲+5.5% Added · +201K sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $223.1M | 2.4M | →First observed position No prior filed position | Q1 2026 | |
| 5 | STATE STREET CORP | $254.1M | 2.2M | ▲+12% Added · +226K sh | Q2 2026 | |
| 6 | FMR LLC | $181.6M | 2.0M | ▲+204% Added · +1.3M sh | Q1 2026 | |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $158.7M | 1.7M | ▲+21% Added · +297K sh | Q1 2026 | |
| 8 | BVF INC/IL | $146.4M | 1.6M | ▲+6.0% Added · +89K sh | Q1 2026 | |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | $132.3M | 1.4M | →First observed position No prior filed position | Q1 2026 | |
| 10 | EVENTIDE ASSET MANAGEMENT, LLC | $130.1M | 1.4M | ▼−33% Reduced · −685K sh | Q1 2026 | |
| 11 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $164.5M | 1.4M | ▲+318% Added · +1.1M sh | Q2 2026 | |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | $163.2M | 1.4M | ▲+11% Added · +134K sh | Q2 2026 | |
| 13 | TANG CAPITAL MANAGEMENT LLC | $114.2M | 1.2M | —Held | Q1 2026 | |
| 14 | Novo Holdings A/S | $131.7M | 1.1M | ▼−15% Reduced · −200K sh | Q2 2026 | |
| 15 | TCG Crossover Management, LLC | $98.1M | 1.1M | ▲17× Added · +1.0M sh | Q1 2026 | |
| 16 | CITADEL ADVISORS LLC | $97.2M | 1.1M | ▲+25% Added · +212K sh | Q1 2026 | |
| 17 | BNP PARIBAS FINANCIAL MARKETS | $84.2M | 911K | ▲+39% Added · +256K sh | Q1 2026 | |
| 18 | Polar Capital Holdings Plc | $99.0M | 846K | ▲+198% Added · +562K sh | Q2 2026 | |
| 19 | Rock Springs Capital Management LP | $93.4M | 798K | ▼−1.6% Reduced · −13K sh | Q2 2026 | |
| 20 | TWO SIGMA INVESTMENTS, LP | $71.6M | 775K | ▲+99% Added · +386K sh | Q1 2026 | |
| 21 | BANK OF AMERICA CORP /DE/ | $66.7M | 722K | ▲+1.2% Added · +9K sh | Q1 2026 | |
| 22 | FRANKLIN RESOURCES INC | $66.0M | 715K | ▲+9.8% Added · +64K sh | Q1 2026 | |
| 23 | Clearbridge Investments, LLC | $62.1M | 672K | ▼−22% Reduced · −194K sh | Q1 2026 | |
| 24 | GOLDMAN SACHS GROUP INC | $61.2M | 662K | ▼−8.6% Reduced · −62K sh | Q1 2026 | |
| 25 | Paradigm Biocapital Advisors LP | $57.7M | 625K | ▲New +625K 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, 7 funds opened a new position in MIRM and 36 added to an existing one, while 23 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 | 161 funds | $236.5B |
| BROADCOM INCAVGO | 161 funds | $139.9B |
| AMAZON.COM INCAMZN | 160 funds | $175.9B |
| NVIDIA CORPNVDA | 158 funds | $349.1B |
| ELI LILLY & COLLY | 158 funds | $67.6B |
| META PLATFORMS INC-CLASS AMETA | 157 funds | $99.4B |
| ALPHABET INC-CL AGOOGL | 155 funds | $151.6B |
| APPLE INCAAPL | 153 funds | $257.5B |
| MICRON TECHNOLOGY INCMU | 150 funds | $35.5B |
| VISA INC-CLASS A SHARESV | 149 funds | $57.0B |
| ADVANCED MICRO DEVICESAMD | 148 funds | $32.5B |
| JPMORGAN CHASE & COJPM | 147 funds | $58.3B |
Ranked by how many of MIRM's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 18, 2026 | Howe Jolanda | SVP, GLOBAL CONTROLLER | Sell (S) | 40K | $4.0M |
| Aug 11, 2026 | BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Sell (S) | 6K | $600K |
| Aug 10, 2026 | Peetz Christopher | CHIEF EXECUTIVE OFFICER, Director | Sell (S) | 2K | $230K |
| Aug 10, 2026 | Peetz Christopher | CHIEF EXECUTIVE OFFICER, Director | Sell (S) | 6K | $597K |
| Aug 10, 2026 | Peetz Christopher | CHIEF EXECUTIVE OFFICER, Director | Sell (S) | 12K | $1.2M |
| Aug 3, 2026 | Howe Jolanda | SVP, GLOBAL CONTROLLER | Sell (S) | 2K | $194K |
| Jul 6, 2026 | BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Sell (S) | 3K | $380K |
| Jul 6, 2026 | BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Sell (S) | 1K | $128K |
| Jul 6, 2026 | BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Sell (S) | 528 | $65K |
| Jul 6, 2026 | BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Sell (S) | 300 | $37K |
| Jul 6, 2026 | Peetz Christopher | CHIEF EXECUTIVE OFFICER, Director | Sell (S) | 12K | $1.5M |
| Jul 6, 2026 | Peetz Christopher | CHIEF EXECUTIVE OFFICER, Director | Sell (S) | 4K | $512K |
| Class | 13F holders | Value held |
|---|---|---|
| MIRMthis pagecs | 291 funds | $6.6B |
| MIRM 4 05/01/29SDBCV | 29 funds | $705.7M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for MIRM
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/MIRM/capital-change-brief"
Use Arkolith's capital_change_brief for MIRM. 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 MIRM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.