Ticker: MASI CUSIP: 574795100 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Institution | Shares | Value ($000) |
|---|---|---|
| NAYA CAPITAL MANAGEMENT UK LTD | 1,560,697 | $202,984 |
| Parkman Healthcare Partners LLC | 200,000 | $26,012 |
| LECAP ASSET MANAGEMENT LTD | 13,196 | $1,716 |
| Sofinnova Investments, Inc. | 46,201 | $6,009 |
| nVerses Capital, LLC | 2,067 | $269 |
| Quantbot Technologies LP | 56,925 | $7,404 |
| Dynamic Technology Lab Private Ltd | 9,480 | $1,233 |
| Campbell & CO Investment Adviser LLC | 27,783 | $3,613 |
| ORSER CAPITAL MANAGEMENT, LLC | 2,450 | $319 |
| Farringdon Capital, Ltd. | 3,141 | $409 |
| Qube Research & Technologies Ltd | 293,536 | $38,177 |
| INCEPTIONR LLC | 2,202 | $286 |
| XTX Topco Ltd | 12,746 | $1,658 |
| Redwood Investment Management, LLC | 8,435 | $1 |
| Man Group plc | 147,416 | $19,173 |
| TWO SIGMA SECURITIES, LLC | 2,711 | $353 |
| Aigen Investment Management, LP | 2,018 | $262 |
| Cinctive Capital Management LP | 5,681 | $739 |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 16,147 | $2,100 |
| Caitong International Asset Management Co., Ltd | 890 | $116 |
| Institution | Prev Shares | Curr Shares | Change |
|---|---|---|---|
| WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD | 27,234 | 39,437 | +12,203 (+44.8%) |
| Schonfeld Strategic Advisors LLC | 10,884 | 265,036 | +254,152 (+2335.1%) |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 1,419,250 | 1,522,049 | +102,799 (+7.2%) |
| Gotham Asset Management, LLC | 129,026 | 342,194 | +213,168 (+165.2%) |
| AQR CAPITAL MANAGEMENT LLC | 31,034 | 1,091,326 | +1,060,292 (+3416.5%) |
| Engineers Gate Manager LP | 30,773 | 83,458 | +52,685 (+171.2%) |
| DF DENT & CO INC | 108,653 | 142,626 | +33,973 (+31.3%) |
| Erste Asset Management GmbH | 160,000 | 200,000 | +40,000 (+25.0%) |
| Polymer Capital Management (US) LLC | 5,876 | 9,523 | +3,647 (+62.1%) |
| OCCUDO QUANTITATIVE STRATEGIES LP | 5,148 | 9,663 | +4,515 (+87.7%) |
| DARK FOREST CAPITAL MANAGEMENT LP | 10,009 | 16,385 | +6,376 (+63.7%) |
| Verition Fund Management LLC | 9,403 | 53,020 | +43,617 (+463.9%) |
| iSAM Funds (UK) Ltd | 699 | 1,762 | +1,063 (+152.1%) |
| 111 Capital | 1,666 | 2,871 | +1,205 (+72.3%) |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 336,650 | 475,504 | +138,854 (+41.2%) |
| FORA Capital, LLC | 3,622 | 5,174 | +1,552 (+42.8%) |
| Versor Investments LP | 2,252 | 3,564 | +1,312 (+58.3%) |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 2,863 | 39,557 | +36,694 (+1281.7%) |
| UBS Group AG | 169,800 | 599,274 | +429,474 (+252.9%) |
| MILLENNIUM MANAGEMENT LLC | 16,131 | 187,965 | +171,834 (+1065.2%) |
| Institution | Prev Shares | Curr Shares | Change |
|---|---|---|---|
| Alpha Wave Global, LP | 97,102 | 75,552 | -21,550 (-22.2%) |
| Liontrust Investment Partners LLP | 681,895 | 627,796 | -54,099 (-7.9%) |
| VIKING GLOBAL INVESTORS LP | 1,073,433 | 514,340 | -559,093 (-52.1%) |
| Bayforest Capital Ltd | 3,559 | 464 | -3,095 (-87.0%) |
| COMERICA BANK | 233,427 | 12,233 | -221,194 (-94.8%) |
| Westmount Partners, LLC | 25,866 | 24,232 | -1,634 (-6.3%) |
| Alyeska Investment Group, L.P. | 1,381,085 | 1,259,307 | -121,778 (-8.8%) |
| Blueshift Asset Management, LLC | 5,330 | 1,966 | -3,364 (-63.1%) |
| T. Rowe Price Investment Management, Inc. | 2,126,763 | 600,293 | -1,526,470 (-71.8%) |
| BLI - Banque de Luxembourg Investments | 68,500 | 48,839 | -19,661 (-28.7%) |
| GLUSKIN SHEFF & ASSOC INC | 27,923 | 25,805 | -2,118 (-7.6%) |
| Capital Research Global Investors | 1,854,128 | 637,894 | -1,216,234 (-65.6%) |
| Grantham, Mayo, Van Otterloo & Co. LLC | 242,822 | 143,825 | -98,997 (-40.8%) |
| Sumitomo Mitsui Trust Holdings, Inc. | 397,248 | 14,572 | -382,676 (-96.3%) |
| Walleye Capital LLC | 89,363 | 42,049 | -47,314 (-52.9%) |
| Rockefeller Capital Management L.P. | 147,428 | 86,411 | -61,017 (-41.4%) |
| Toroso Investments, LLC | 132,557 | 85,294 | -47,263 (-35.7%) |
| BlackRock, Inc. | 10,361,091 | 8,855,619 | -1,505,472 (-14.5%) |
| FMR LLC | 8,213,721 | 7,864,164 | -349,557 (-4.3%) |
| Quantinno Capital Management LP | 39,589 | 13,253 | -26,336 (-66.5%) |
| Institution | Prev Shares | Prev Value ($000) |
|---|---|---|
| BRIDGER MANAGEMENT, LLC | 47,841 | $7,059 |
| CRAMER ROSENTHAL MCGLYNN LLC | 114,605 | $16,910 |
| Durable Capital Partners LP | 620,619 | $91,572 |
| SHERBROOKE PARK ADVISERS LLC | 5,905 | $871 |
| Montanaro Asset Management Ltd | 12,960 | $1,912 |
| Mitsubishi UFJ Asset Management (UK) Ltd. | 8,000 | $1 |
| PharVision Advisers, LLC | 3,909 | $577 |
| Bayesian Capital Management, LP | 5,779 | $853 |
| Alamea Verwaltungs GmbH | 2,566 | $379 |
| Entropy Technologies, LP | 16,809 | $2,480 |
| Fieldview Capital Management, LLC | 6,812 | $1,005 |
| EntryPoint Capital, LLC | 3,072 | $453 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | 15,292 | $2,256 |
| Corient IA LLC | 1,500 | $221 |
| JUPITER ASSET MANAGEMENT LTD | 84,657 | $12,491 |
| Quantitative Investment Management, LLC | 12,025 | $2 |
| Andina Capital Management, LLC | 1,420 | $210 |
| apricus wealth, LLC | 1,462 | $216 |
| Quantum Portfolio Management LLC | 1,988 | $293 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 150,000 | $22,133 |