Who owns MIR
Which tracked institutional funds hold MIR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MIR company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
78 tracked funds added or opened MIR while 113 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
MIR’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes MIR more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MIR 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 2026-Q1 and 2026-Q2, across 327 tracked filers holding MIR, 184 increased or opened the position and 201 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 MIR between the 2026-Q1 and 2026-Q2 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 18
- Jupiter Topco LLC$74M
- ROYAL LONDON ASSET MANAGEMENT LTD$21M
- Clearbridge Investments, LLC$20M
- ExodusPoint Capital Management, LP$11M
- NISSAY ASSET MANAGEMENT CORP /JAPAN$11M
- WCM INVESTMENT MANAGEMENT, LLC$10M
Full exits 40
- T. Rowe Price Investment Management, Inc.$272M
- JANUS HENDERSON GROUP PLC$75M
- Two Creeks Capital Management, LP$46M
- BROWN ADVISORY INC$24M
- Daiwa Securities Group Inc.$23M
- Alta Park Capital, LP$18M
Largest adds
- Alyeska Investment Group, L.P.$121M
- CONGRESS ASSET MANAGEMENT CO$99M
- BlackRock, Inc.$62M
- GOLDMAN SACHS GROUP INC$50M
- BAMCO INC /NY/$47M
- MAVERICK CAPITAL LTD$45M
Largest trims
- MILLENNIUM MANAGEMENT LLC$77M
- Bank of New York Mellon Corp$60M
- ALLIANCEBERNSTEIN L.P.$33M
- CITADEL ADVISORS LLC$32M
- UBS Group AG$22M
- FRANKLIN RESOURCES INC$21M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 38,262,307 | $686M | 16.3% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 18,179,850 | $326M | 7.7% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 10,613,869 | $190M | 4.5% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 10,406,605 | $187M | 4.4% | 2026-Q2 |
| STATE STREET CORP added | 9,923,609 | $178M | 4.2% | 2026-Q2 |
| Alyeska Investment Group, L.P. added | 9,534,955 | $171M | 4.1% | 2026-Q2 |
| COOPERMAN LEON G | 8,383,441 | $150M | 3.6% | 2026-Q2 |
| FMR LLC added | 7,329,386 | $131M | 3.1% | 2026-Q2 |
| CONGRESS ASSET MANAGEMENT CO added | 6,685,434 | $120M | 2.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 6,280,048 | $113M | 2.7% | 2026-Q2 |
| MAVERICK CAPITAL LTD added | 5,245,039 | $94M | 2.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 4,859,755 | $87M | 2.1% | 2026-Q2 |
| Jupiter Topco LLC new | 4,114,766 | $74M | 1.7% | 2026-Q2 |
| BAMCO INC /NY/ added | 3,906,083 | $70M | 1.7% | 2026-Q2 |
| MORGAN STANLEY added | 3,896,754 | $70M | 1.7% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 3,199,539 | $57M | 1.4% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 3,176,241 | $57M | 1.4% | 2026-Q2 |
| Invesco Ltd. added | 2,769,589 | $50M | 1.2% | 2026-Q2 |
| UBS Group AG trimmed | 2,686,713 | $48M | 1.1% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 2,606,507 | $46M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 2,586,059 | $46M | 1.1% | 2026-Q2 |
| Swedbank AB trimmed | 2,531,200 | $45M | 1.1% | 2026-Q2 |
| LOOMIS SAYLES & CO L P trimmed | 2,525,188 | $45M | 1.1% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 2,447,222 | $44M | 1.0% | 2026-Q2 |
| TCW GROUP INC added | 2,255,645 | $40M | 1.0% | 2026-Q2 |
| Nuveen, LLC added | 2,109,181 | $38M | 0.9% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 1,782,618 | $32M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 1,723,956 | $31M | 0.7% | 2026-Q2 |
| Stephens Investment Management Group LLC added | 1,678,373 | $30M | 0.7% | 2026-Q2 |
| Chescapmanager LLC | 1,659,137 | $30M | 0.7% | 2026-Q2 |
| Davidson Kempner Capital Management LP added | 1,619,998 | $29M | 0.7% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 1,594,840 | $28M | 0.7% | 2026-Q2 |
| Select Equity Group, L.P. added | 1,576,023 | $28M | 0.7% | 2026-Q2 |
| Troluce Capital Advisors LLC added | 1,539,212 | $28M | 0.7% | 2026-Q2 |
| Rockefeller Capital Management L.P. added | 1,466,144 | $26M | 0.6% | 2026-Q2 |
| TimesSquare Capital Management, LLC added | 1,400,642 | $25M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 1,381,674 | $25M | 0.6% | 2026-Q2 |
| EMERALD ADVISERS, LLC trimmed | 1,364,780 | $24M | 0.6% | 2026-Q2 |
| Conestoga Capital Advisors, LLC trimmed | 1,248,061 | $22M | 0.5% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 1,196,716 | $21M | 0.5% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 1,194,106 | $21M | 0.5% | 2026-Q2 |
| ROYAL LONDON ASSET MANAGEMENT LTD new | 1,176,241 | $21M | 0.5% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 1,158,094 | $21M | 0.5% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 1,131,124 | $20M | 0.5% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,098,987 | $20M | 0.5% | 2026-Q2 |
| Clearbridge Investments, LLC new | 1,096,729 | $20M | 0.5% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 1,002,284 | $18M | 0.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 991,741 | $18M | 0.4% | 2026-Q2 |
| JENNISON ASSOCIATES LLC trimmed | 887,170 | $16M | 0.4% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 884,482 | $16M | 0.4% | 2026-Q2 |
| EMERALD MUTUAL FUND ADVISERS TRUST | 873,466 | $16M | 0.4% | 2026-Q2 |
| CORSAIR CAPITAL MANAGEMENT, L.P. trimmed | 867,670 | $16M | 0.4% | 2026-Q2 |
| SEI INVESTMENTS CO added | 849,475 | $15M | 0.4% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 846,790 | $15M | 0.4% | 2026-Q2 |
| Tidal Investments LLC added | 840,683 | $15M | 0.4% | 2026-Q2 |
| Public Sector Pension Investment Board trimmed | 840,519 | $15M | 0.4% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC added | 813,203 | $15M | 0.3% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 797,538 | $14M | 0.3% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 760,985 | $14M | 0.3% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 713,358 | $13M | 0.3% | 2026-Q2 |
| NOMURA HOLDINGS INC trimmed | 709,604 | $13M | 0.3% | 2026-Q2 |
| Pier Capital, LLC trimmed | 696,047 | $12M | 0.3% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 684,849 | $12M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 677,509 | $12M | 0.3% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 670,489 | $12M | 0.3% | 2026-Q2 |
| Aberdeen Group plc added | 627,585 | $11M | 0.3% | 2026-Q2 |
| ExodusPoint Capital Management, LP new | 605,134 | $11M | 0.3% | 2026-Q2 |
| NISSAY ASSET MANAGEMENT CORP /JAPAN new | 599,278 | $11M | 0.3% | 2026-Q2 |
| CITIGROUP INC trimmed | 598,776 | $11M | 0.3% | 2026-Q2 |
| WCM INVESTMENT MANAGEMENT, LLC new | 591,279 | $10M | 0.2% | 2026-Q2 |
| ArrowMark Colorado Holdings LLC added | 588,240 | $11M | 0.3% | 2026-Q2 |
| SCHWARTZ INVESTMENT COUNSEL INC trimmed | 573,910 | $10M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 568,321 | $10M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 542,835 | $10M | 0.2% | 2026-Q2 |
| GAMCO INVESTORS, INC. ET AL trimmed | 535,270 | $10M | 0.2% | 2026-Q2 |
| PEREGRINE CAPITAL MANAGEMENT LLC added | 502,843 | $9M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 480,488 | $9M | 0.2% | 2026-Q2 |
| Swiss National Bank | 465,900 | $8M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 450,934 | $8M | 0.2% | 2026-Q2 |
| Robeco Schweiz AG added | 424,000 | $8M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 421,193 | $8M | 0.2% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 420,398 | $8M | 0.2% | 2026-Q2 |
| Montanaro Asset Management Ltd added | 418,646 | $8M | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 400,454 | $7M | 0.2% | 2026-Q2 |
| ZEVENBERGEN CAPITAL INVESTMENTS LLC added | 400,300 | $7M | 0.2% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 392,003 | $7M | 0.2% | 2026-Q2 |
| TD Asset Management Inc added | 389,798 | $7M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 386,193 | $7M | 0.2% | 2026-Q2 |
| BANK OF NOVA SCOTIA trimmed | 373,629 | $7M | 0.2% | 2026-Q2 |
| Bridgewater Associates, LP added | 359,138 | $6M | 0.2% | 2026-Q2 |
| GABELLI FUNDS LLC trimmed | 351,160 | $6M | 0.1% | 2026-Q2 |
| Burkehill Global Management, LP | 350,000 | $6M | 0.1% | 2026-Q2 |
| ROYCE & ASSOCIATES LP trimmed | 347,262 | $6M | 0.1% | 2026-Q2 |
| Holocene Advisors, LP added | 337,724 | $6M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 332,517 | $6M | 0.1% | 2026-Q2 |
| ARDSLEY ADVISORY PARTNERS LP | 325,000 | $6M | 0.1% | 2026-Q2 |
| Sumitomo Mitsui DS Asset Management Company, Ltd trimmed | 322,714 | $6M | 0.1% | 2026-Q2 |
| FRONTIER CAPITAL MANAGEMENT CO LLC new | 298,979 | $5M | 0.1% | 2026-Q2 |
| ESSEX INVESTMENT MANAGEMENT CO LLC trimmed | 295,060 | $5M | 0.1% | 2026-Q2 |
| AXIOM INVESTORS LLC /DE trimmed | 280,861 | $5M | 0.1% | 2026-Q2 |
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.