Who owns MRNA (MRNA)
Which tracked institutional funds hold MRNA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MRNA company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on MRNA is one-sided between 2025-Q4 and 2026-Q1: 294 added or opened and 67 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MRNA’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MRNA divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 722 tracked filers holding MRNA, 384 increased or opened the position and 298 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MRNA between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 39
- VANGUARD CAPITAL MANAGEMENT LLC$1.2B
- VANGUARD PORTFOLIO MANAGEMENT LLC$793M
- VANGUARD FIDUCIARY TRUST CO$100M
- Vanguard Global Advisers, LLC$37M
- Qube Research & Technologies Ltd$36M
- Telemark Asset Management, LLC$25M
Full exits 35
- VANGUARD GROUP INC$1.2B
- TWO SIGMA ADVISERS, LP$228M
- Sessa Capital IM, L.P.$22M
- Jump Financial, LLC$18M
- Aquatic Capital Management LLC$16M
- Verition Fund Management LLC$13M
Largest adds
- FMR LLC$1.5B
- Capital World Investors$572M
- BAILLIE GIFFORD & CO$408M
- STATE STREET CORP$272M
- TWO SIGMA INVESTMENTS, LP$245M
- GOLDMAN SACHS GROUP INC$219M
Largest trims
- D. E. Shaw & Co., Inc.$119M
- M&T Bank Corp$61M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$45M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$21M
- Squarepoint Ops LLC$18M
- DekaBank Deutsche Girozentrale$16M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 45,559,407 | $2.3B | 14.3% | 2026-Q1 |
| BlackRock, Inc. trimmed | 22,995,385 | $1.2B | 7.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 22,872,458 | $1.2B | 7.2% | 2026-Q1 |
| BAILLIE GIFFORD & CO trimmed | 19,985,876 | $1.0B | 6.3% | 2026-Q1 |
| Capital World Investors added | 18,697,694 | $950M | 5.9% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 15,616,367 | $793M | 4.9% | 2026-Q1 |
| STATE STREET CORP trimmed | 14,861,409 | $755M | 4.7% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 9,435,132 | $478M | 3.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 9,086,404 | $462M | 2.9% | 2026-Q1 |
| MORGAN STANLEY trimmed | 8,471,263 | $430M | 2.7% | 2026-Q1 |
| Theleme Partners LLP trimmed | 8,048,245 | $409M | 2.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 6,603,697 | $335M | 2.1% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 4,734,356 | $241M | 1.5% | 2026-Q1 |
| Invesco Ltd. trimmed | 4,730,422 | $240M | 1.5% | 2026-Q1 |
| Flagship Pioneering, LLC | 4,632,149 | $235M | 1.5% | 2026-Q1 |
| UBS Group AG added | 4,407,907 | $224M | 1.4% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 4,317,219 | $219M | 1.4% | 2026-Q1 |
| Alyeska Investment Group, L.P. added | 4,051,185 | $206M | 1.3% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 2,952,041 | $150M | 0.9% | 2026-Q1 |
| BANQUE PICTET & CIE SA trimmed | 2,748,754 | $140M | 0.9% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 2,392,693 | $122M | 0.8% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 2,341,696 | $119M | 0.7% | 2026-Q1 |
| Merck & Co., Inc. | 2,308,190 | $117M | 0.7% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 2,132,167 | $108M | 0.7% | 2026-Q1 |
| FEDERATED HERMES, INC. trimmed | 1,977,079 | $100M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 1,966,317 | $100M | 0.6% | 2026-Q1 |
| NATIONAL BANK OF CANADA /FI/ trimmed | 1,817,001 | $92M | 0.6% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 1,691,205 | $86M | 0.5% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 1,620,574 | $82M | 0.5% | 2026-Q1 |
| NORGES BANK added | 2,738,540 | $78M | 0.5% | 2026-Q1 |
| CITIGROUP INC trimmed | 1,480,034 | $75M | 0.5% | 2026-Q1 |
| Douglas Lane & Associates, LLC added | 1,311,480 | $67M | 0.4% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 1,317,601 | $64M | 0.4% | 2026-Q1 |
| Nuveen, LLC trimmed | 1,078,194 | $55M | 0.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,019,208 | $52M | 0.3% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 999,340 | $51M | 0.3% | 2026-Q1 |
| Allianz Asset Management GmbH added | 988,908 | $50M | 0.3% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 986,360 | $50M | 0.3% | 2026-Q1 |
| BARCLAYS PLC trimmed | 932,269 | $47M | 0.3% | 2026-Q1 |
| Amundi trimmed | 904,823 | $46M | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 881,200 | $45M | 0.3% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 810,253 | $41M | 0.3% | 2026-Q1 |
| Lingotto Investment Management LLP added | 763,907 | $39M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 750,841 | $38M | 0.2% | 2026-Q1 |
| LETKO, BROSSEAU & ASSOCIATES INC added | 748,815 | $38M | 0.2% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 738,578 | $38M | 0.2% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 735,962 | $37M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 710,640 | $36M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 700,692 | $36M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 696,100 | $35M | 0.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 666,532 | $34M | 0.2% | 2026-Q1 |
| Pictet Asset Management Holding SA trimmed | 676,117 | $33M | 0.2% | 2026-Q1 |
| Step Capital Management Pte. Ltd. | 645,000 | $33M | 0.2% | 2026-Q1 |
| California Public Employees Retirement System added | 628,160 | $32M | 0.2% | 2026-Q1 |
| CAPITAL FUND MANAGEMENT S.A. trimmed | 569,930 | $29M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 560,359 | $28M | 0.2% | 2026-Q1 |
| Telemark Asset Management, LLC | 500,000 | $25M | 0.2% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 489,770 | $25M | 0.2% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 485,719 | $25M | 0.2% | 2026-Q1 |
| HSBC HOLDINGS PLC trimmed | 490,088 | $25M | 0.2% | 2026-Q1 |
| Trexquant Investment LP added | 483,971 | $25M | 0.2% | 2026-Q1 |
| OFI INVEST ASSET MANAGEMENT added | 547,881 | $24M | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC | 471,043 | $24M | 0.1% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 439,076 | $22M | 0.1% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 424,625 | $22M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 407,190 | $21M | 0.1% | 2026-Q1 |
| Mount Capital Ltd new | 395,200 | $20M | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 387,718 | $20M | 0.1% | 2026-Q1 |
| CWM, LLC trimmed | 386,906 | $20M | 0.1% | 2026-Q1 |
| HRT FINANCIAL LP added | 368,421 | $19M | 0.1% | 2026-Q1 |
| Mitsubishi UFJ Trust & Banking Corp added | 340,902 | $17M | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 318,776 | $16M | 0.1% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 314,872 | $16M | 0.1% | 2026-Q1 |
| Leonteq Securities AG trimmed | 302,375 | $15M | 0.1% | 2026-Q1 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM trimmed | 302,114 | $15M | 0.1% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ trimmed | 297,803 | $15M | 0.1% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 276,069 | $14M | 0.1% | 2026-Q1 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | 266,399 | $14M | 0.1% | 2026-Q1 |
| SG Americas Securities, LLC trimmed | 250,868 | $13M | 0.1% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP added | 246,431 | $13M | 0.1% | 2026-Q1 |
| Hamilton Wealth, LLC trimmed | 242,184 | $12M | 0.1% | 2026-Q1 |
| ALGERT GLOBAL LLC added | 237,418 | $12M | 0.1% | 2026-Q1 |
| Candriam S.C.A. added | 230,824 | $12M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 393,975 | $12M | 0.1% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 227,162 | $12M | 0.1% | 2026-Q1 |
| PLUSTICK MANAGEMENT LLC added | 220,000 | $11M | 0.1% | 2026-Q1 |
| SIMPLEX TRADING, LLC added | 219,573 | $11M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 212,709 | $11M | 0.1% | 2026-Q1 |
| DekaBank Deutsche Girozentrale | 220,245 | $11M | 0.1% | 2026-Q1 |
| Woodline Partners LP added | 211,473 | $11M | 0.1% | 2026-Q1 |
| CREDIT AGRICOLE S A trimmed | 200,797 | $10M | 0.1% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 197,844 | $10M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 40,463,628 | $1.2B | 7.4% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP added | 7,729,700 | $228M | 1.4% | 2025-Q4 stale |
| DEERFIELD MANAGEMENT COMPANY, L.P. added | 1,000,000 | $28M | 0.2% | 2025-Q2 stale |
| Sessa Capital IM, L.P. | 743,081 | $22M | 0.1% | 2025-Q4 stale |
| Jump Financial, LLC added | 625,893 | $18M | 0.1% | 2025-Q4 stale |
| TB Alternative Assets Ltd. trimmed | 658,881 | $17M | 0.1% | 2025-Q3 stale |
| Aquatic Capital Management LLC added | 549,671 | $16M | 0.1% | 2025-Q4 stale |
| Verition Fund Management LLC added | 452,529 | $13M | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.