On this page, we present all of the funds holding MASI from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding MASI, with a link to that fund's top holdings. The next columns indicate the amount of MASI stock held by each of the funds holding MASI, followed by the MASI position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 344 funds holding MASI within the last two filing periods in our coverage universe of 13F filers, with the largest position size having been reported by FMR LLC. For more details on the positions held by FMR LLC (or by any of the other funds holding MASI), click the fund name in the "Holder" column of the funds-holding-MASI table below.

Holder	Amount	Position Size ($ in 1000's)	As of
FMR LLC	6,927,572	$811,981	12/31/2023
MASI	6,927,572	$811,981	12/31/2023
BlackRock Inc.	5,659,131	$663,307	12/31/2023
MASI	5,659,131	$663,307	12/31/2023
Vanguard Group Inc.	4,781,343	$560,421	12/31/2023
MASI	4,781,343	$560,421	12/31/2023
Politan Capital Management LP	4,713,518	$552,471	12/31/2023
MASI	4,713,518	$552,471	12/31/2023
Capital Research Global Investors	2,269,189	$265,972	12/31/2023
MASI	2,269,189	$265,972	12/31/2023
Massachusetts Financial Services Co. MA	1,607,310	$188,393	12/31/2023
MASI	1,607,310	$188,393	12/31/2023
RTW Investments LP	1,462,400	$171,408	12/31/2023
MASI	1,462,400	$171,408	12/31/2023
State Street Corp	1,357,402	$159,101	12/31/2023
MASI	1,357,402	$159,101	12/31/2023
Farallon Capital Management LLC	1,311,649	$153,738	12/31/2023
MASI	1,311,649	$153,738	12/31/2023
T. Rowe Price Investment Management Inc.	1,161,907	$136,188	12/31/2023
MASI	1,161,907	$136,188	12/31/2023
Thrivent Financial for Lutherans	1,063,381	$124,638	12/31/2023
MASI	1,063,381	$124,638	12/31/2023
Citadel Advisors LLC		$107,843	12/31/2023
MASI	764,079	$89,558	12/31/2023
Call	231,100	$27,087	12/31/2023
Put	75,100	$8,802	12/31/2023
Schroder Investment Management Group	877,539	$102,856	12/31/2023
MASI	877,539	$102,856	12/31/2023
Liontrust Investment Partners LLP	852,393	$99,909	12/31/2023
MASI	852,393	$99,909	12/31/2023
Westfield Capital Management Co. LP	818,476	$95,934	12/31/2023
MASI	818,476	$95,934	12/31/2023
Jackson Square Partners LLC	762,329	$89,353	12/31/2023
MASI	762,329	$89,353	12/31/2023
Geode Capital Management LLC	723,936	$84,866	12/31/2023
MASI	723,936	$84,866	12/31/2023
Alyeska Investment Group L.P.	534,715	$62,674	12/31/2023
MASI	534,715	$62,674	12/31/2023
Point72 Asset Management L.P.	516,356	$60,522	12/31/2023
MASI	516,356	$60,522	12/31/2023
Sumitomo Mitsui Trust Holdings Inc.	391,889	$57,549	03/31/2024
MASI	391,889	$57,549	03/31/2024
Bank of New York Mellon Corp	390,925	$57,407	03/31/2024
MASI	390,925	$57,407	03/31/2024
Morgan Stanley	458,024	$53,685	12/31/2023
MASI	458,024	$53,685	12/31/2023
MIG Capital LLC	447,279	$52,426	12/31/2023
MASI	447,279	$52,426	12/31/2023
ArrowMark Colorado Holdings LLC	425,713	$49,898	12/31/2023
MASI	425,713	$49,898	12/31/2023
Price T Rowe Associates Inc. MD	410,508	$48,117	12/31/2023
MASI	410,508	$48,117	12/31/2023
Balyasny Asset Management LLC		$48,048	12/31/2023
MASI	302,535	$35,460	12/31/2023
Call	107,400	$12,588	12/31/2023
Ensemble Capital Management LLC	372,178	$43,623	12/31/2023
MASI	372,178	$43,623	12/31/2023
Charles Schwab Investment Management Inc.	368,041	$43,138	12/31/2023
MASI	368,041	$43,138	12/31/2023
JPMorgan Chase & Co.	355,199	$41,633	12/31/2023
MASI	355,199	$41,633	12/31/2023
Northern Trust Corp	347,353	$40,713	12/31/2023
MASI	347,353	$40,713	12/31/2023
Hawk Ridge Capital Management LP	342,528	$40,148	12/31/2023
MASI	342,528	$40,148	12/31/2023
Dimensional Fund Advisors LP	301,488	$35,339	12/31/2023
MASI	301,488	$35,339	12/31/2023
Woodline Partners LP	282,275	$33,085	12/31/2023
MASI	282,275	$33,085	12/31/2023
Raymond James & Associates	181,611	$26,670	03/31/2024
MASI	181,611	$26,670	03/31/2024
FIL Ltd	216,474	$25,373	12/31/2023
MASI	216,474	$25,373	12/31/2023
Millennium Management LLC		$25,371	12/31/2023
MASI	196,460	$23,027	12/31/2023
Call	20,000	$2,344	12/31/2023
HBK Investments L P		$23,442	12/31/2023
Call	200,000	$23,442	12/31/2023
Legal & General Group Plc	191,198	$22,410	12/31/2023
MASI	191,198	$22,410	12/31/2023
Marshall Wace LLP	189,053	$22,159	12/31/2023
MASI	189,053	$22,159	12/31/2023
Sei Investments Co.	180,628	$21,171	12/31/2023
MASI	180,628	$21,171	12/31/2023
Goldman Sachs Group Inc.	175,510	$20,572	12/31/2023
MASI	175,510	$20,572	12/31/2023
Federated Hermes Inc.	168,651	$19,768	12/31/2023
MASI	168,651	$19,768	12/31/2023
Principal Financial Group Inc.	164,627	$19,296	12/31/2023
MASI	164,627	$19,296	12/31/2023
Nine Ten Capital Management LLC	163,925	$19,214	12/31/2023
MASI	163,925	$19,214	12/31/2023
Jane Street Group LLC		$17,582	12/31/2023
MASI	86,506	$10,139	12/31/2023
Call	71,700	$8,404	12/31/2023
Put	8,200	$961	12/31/2023
Retirement Systems of Alabama	144,792	$16,971	12/31/2023
MASI	144,792	$16,971	12/31/2023
Rhumbline Advisers	137,951	$16,169	12/31/2023
MASI	137,951	$16,169	12/31/2023
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	137,294	$16,092	12/31/2023
MASI	137,294	$16,092	12/31/2023
Rockefeller Capital Management L.P.	128,091	$15,014	12/31/2023
MASI	128,091	$15,014	12/31/2023
Wells Fargo & Company MN	116,712	$13,680	12/31/2023
MASI	116,712	$13,680	12/31/2023
Twin Tree Management LP	112,419	$13,177	12/31/2023
MASI	112,419	$13,177	12/31/2023
Senator Investment Group LP	110,000	$12,893	12/31/2023
MASI	110,000	$12,893	12/31/2023
Comerica Bank	109,259	$12,806	12/31/2023
MASI	109,259	$12,806	12/31/2023
Montanaro Asset Management Ltd	104,250	$12,219	12/31/2023
MASI	104,250	$12,219	12/31/2023
Picton Mahoney Asset Management	103,037	$12,078	12/31/2023
MASI	103,037	$12,078	12/31/2023
UBS Asset Management Americas Inc.	102,275	$11,988	12/31/2023
MASI	102,275	$11,988	12/31/2023
Nuveen Asset Management LLC	93,068	$10,908	12/31/2023
MASI	93,068	$10,908	12/31/2023
Swiss National Bank	88,400	$10,361	12/31/2023
MASI	88,400	$10,361	12/31/2023
Baillie Gifford & Co.	86,188	$10,102	12/31/2023
MASI	86,188	$10,102	12/31/2023
Susquehanna Portfolio Strategies LLC	85,174	$9,983	12/31/2023
MASI	85,174	$9,983	12/31/2023
Gamco Investors INC. ET AL	84,500	$9,904	12/31/2023
MASI	84,500	$9,904	12/31/2023
Ameriprise Financial Inc.	82,795	$9,704	12/31/2023
MASI	82,795	$9,704	12/31/2023
Gotham Asset Management LLC	80,056	$9,383	12/31/2023
MASI	80,056	$9,383	12/31/2023
TD Asset Management Inc.	79,430	$9,310	12/31/2023
MASI	79,430	$9,310	12/31/2023
Invesco Ltd.	78,103	$9,154	12/31/2023
MASI	78,103	$9,154	12/31/2023
California Public Employees Retirement System	77,458	$9,079	12/31/2023
MASI	77,458	$9,079	12/31/2023
Susquehanna International Group LLP		$8,379	12/31/2023
Call	182,500	$21,391	12/31/2023
Put	137,600	$16,128	12/31/2023
MASI	26,583	$3,116	12/31/2023
Alliancebernstein L.P.	67,517	$7,914	12/31/2023
MASI	67,517	$7,914	12/31/2023
New York State Teachers Retirement System	50,748	$7,452	03/31/2024
MASI	50,748	$7,452	03/31/2024
Barclays PLC		$7,356	12/31/2023
MASI	49,260	$5,774	12/31/2023
Call	13,500	$1,582	12/31/2023
Clearline Capital LP	62,197	$7,290	12/31/2023
MASI	62,197	$7,290	12/31/2023
BNP Paribas Arbitrage SA	61,832	$7,247	12/31/2023
MASI	61,832	$7,247	12/31/2023
American International Group Inc.	60,321	$7,070	12/31/2023
MASI	60,321	$7,070	12/31/2023
Allspring Global Investments Holdings LLC	46,607	$6,844	03/31/2024
MASI	46,607	$6,844	03/31/2024
The Manufacturers Life Insurance Company	56,568	$6,630	12/31/2023
MASI	56,568	$6,630	12/31/2023
Kornitzer Capital Management Inc. KS	53,000	$6,212	12/31/2023
MASI	53,000	$6,212	12/31/2023
Citigroup Inc.	52,614	$6,167	12/31/2023
MASI	52,614	$6,167	12/31/2023
ExodusPoint Capital Management LP	51,289	$6,012	12/31/2023
MASI	51,289	$6,012	12/31/2023
Logan Capital Management Inc.	49,873	$5,846	12/31/2023
MASI	49,873	$5,846	12/31/2023
State Board of Administration of Florida Retirement System	49,151	$5,761	12/31/2023
MASI	49,151	$5,761	12/31/2023
New York State Common Retirement Fund	47,304	$5,545	12/31/2023
MASI	47,304	$5,545	12/31/2023
Credit Suisse AG	47,279	$5,542	12/31/2023
MASI	47,279	$5,542	12/31/2023
California State Teachers Retirement System	47,157	$5,527	12/31/2023
MASI	47,157	$5,527	12/31/2023
Bridgewater Associates LP	45,726	$5,360	12/31/2023
MASI	45,726	$5,360	12/31/2023
13D Management LLC	44,095	$5,168	12/31/2023
MASI	44,095	$5,168	12/31/2023
Man Group plc	41,955	$4,918	12/31/2023
MASI	41,955	$4,918	12/31/2023
CenterBook Partners LP	39,404	$4,619	12/31/2023
MASI	39,404	$4,619	12/31/2023
Texas Permanent School Fund	38,300	$4,489	12/31/2023
MASI	38,300	$4,489	12/31/2023
Lighthouse Investment Partners LLC	37,289	$4,371	12/31/2023
MASI	37,289	$4,371	12/31/2023
Simplify Asset Management Inc.	36,916	$4,327	12/31/2023
MASI	36,916	$4,327	12/31/2023
Moran Wealth Management LLC	35,748	$4,190	12/31/2023
MASI	35,748	$4,190	12/31/2023
NS Partners Ltd	35,618	$4,175	12/31/2023
MASI	35,618	$4,175	12/31/2023
BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp	35,000	$4,102	12/31/2023
MASI	35,000	$4,102	12/31/2023
Wolverine Trading LLC		$3,972	12/31/2023
Call	21,500	$2,520	12/31/2023
MASI	18,687	$2,190	12/31/2023
Put	6,300	$738	12/31/2023
Caption Management LLC		$3,927	12/31/2023
Call	33,500	$3,927	12/31/2023
Gabelli Funds LLC	33,000	$3,868	12/31/2023
MASI	33,000	$3,868	12/31/2023
Great West Life Assurance Co. Can	32,570	$3,808	12/31/2023
MASI	32,570	$3,808	12/31/2023
South Dakota Investment Council	32,447	$3,803	12/31/2023
MASI	32,447	$3,803	12/31/2023
UBS Group AG	32,124	$3,765	12/31/2023
MASI	32,124	$3,765	12/31/2023
Mirae Asset Global Investments Co. Ltd.	31,513	$3,694	12/31/2023
MASI	31,513	$3,694	12/31/2023
Collaborative Holdings Management LP	31,009	$3,635	12/31/2023
MASI	31,009	$3,635	12/31/2023
Amalgamated Bank	24,606	$3,613	03/31/2024
MASI	24,606	$3,613	03/31/2024
Mutual of America Capital Management LLC	27,507	$3,224	12/31/2023
MASI	27,507	$3,224	12/31/2023
Royal Bank of Canada	27,476	$3,221	12/31/2023
MASI	27,476	$3,221	12/31/2023
Readystate Asset Management LP	27,480	$3,221	12/31/2023
MASI	27,480	$3,221	12/31/2023
Brown Capital Management LLC	26,972	$3,161	12/31/2023
MASI	26,972	$3,161	12/31/2023
MetLife Investment Management LLC	26,780	$3,139	12/31/2023
MASI	26,780	$3,139	12/31/2023
State of New Jersey Common Pension Fund D	26,666	$3,126	12/31/2023
MASI	26,666	$3,126	12/31/2023
State of Tennessee Treasury Department	25,560	$2,996	12/31/2023
MASI	25,560	$2,996	12/31/2023
Janus Henderson Group PLC	23,254	$2,726	12/31/2023
MASI	23,254	$2,726	12/31/2023
State of Wisconsin Investment Board	23,157	$2,714	12/31/2023
MASI	23,157	$2,714	12/31/2023
Brown Advisory Inc.	17,571	$2,580	03/31/2024
MASI	17,571	$2,580	03/31/2024
PEAK6 Investments LLC		$2,511	12/31/2023
MASI	37,124	$4,351	12/31/2023
Put	15,700	$1,840	12/31/2023
Yousif Capital Management LLC	20,998	$2,461	12/31/2023
MASI	20,998	$2,461	12/31/2023
Deutsche Bank AG	20,369	$2,387	12/31/2023
MASI	20,369	$2,387	12/31/2023
Envestnet Asset Management Inc.	20,129	$2,359	12/31/2023
MASI	20,129	$2,359	12/31/2023
Creative Planning	19,769	$2,317	12/31/2023
MASI	19,769	$2,317	12/31/2023
Bank of America Corp DE	19,629	$2,301	12/31/2023
MASI	19,629	$2,301	12/31/2023
GTS Securities LLC		$2,297	12/31/2023
Call	19,600	$2,297	12/31/2023
Bell Asset Management Ltd	19,405	$2,274	12/31/2023
MASI	19,405	$2,274	12/31/2023
Treasurer of the State of North Carolina	19,139	$2,243	12/31/2023
MASI	19,139	$2,243	12/31/2023
Voya Investment Management LLC	18,894	$2,215	12/31/2023
MASI	18,894	$2,215	12/31/2023
Cardinal Capital Management	14,764	$2,168	03/31/2024
MASI	14,764	$2,168	03/31/2024
Public Employees Retirement System of Ohio	18,433	$2,161	12/31/2023
MASI	18,433	$2,161	12/31/2023
Lockerman Financial Group Inc.	14,400	$2,115	03/31/2024
MASI	14,400	$2,115	03/31/2024
Royal London Asset Management Ltd.	17,188	$2,015	12/31/2023
MASI	17,188	$2,015	12/31/2023
Louisiana State Employees Retirement System	12,800	$1,880	03/31/2024
MASI	12,800	$1,880	03/31/2024
Teachers Retirement System of The State of Kentucky	15,841	$1,857	12/31/2023
MASI	15,841	$1,857	12/31/2023
Birchview Capital LP	15,280	$1,791	12/31/2023
MASI	15,280	$1,791	12/31/2023
Ensign Peak Advisors Inc	14,875	$1,743	12/31/2023
MASI	14,875	$1,743	12/31/2023
Standard Life Aberdeen plc	14,334	$1,680	12/31/2023
MASI	14,334	$1,680	12/31/2023
Empower Advisory Group LLC	14,160	$1,660	12/31/2023
MASI	14,160	$1,660	12/31/2023
Exchange Traded Concepts LLC	10,984	$1,613	03/31/2024
MASI	10,984	$1,613	03/31/2024
State of Michigan Retirement System	10,896	$1,600	03/31/2024
MASI	10,896	$1,600	03/31/2024
Sofinnova Investments Inc.	12,800	$1,500	12/31/2023
MASI	12,800	$1,500	12/31/2023
Oregon Public Employees Retirement Fund	12,548	$1,471	12/31/2023
MASI	12,548	$1,471	12/31/2023
Arizona State Retirement System	12,551	$1,471	12/31/2023
MASI	12,551	$1,471	12/31/2023
Fred Alger Management LLC	12,439	$1,458	12/31/2023
MASI	12,439	$1,458	12/31/2023
New Mexico Educational Retirement Board	9,900	$1,454	03/31/2024
MASI	9,900	$1,454	03/31/2024
Group One Trading L.P.		$1,432	12/31/2023
MASI	7,021	$823	12/31/2023
Call	5,300	$621	12/31/2023
Put	100	$12	12/31/2023
Virtu Financial LLC	11,611	$1,361	12/31/2023
MASI	11,611	$1,361	12/31/2023
DE Burlo Group Inc.	11,452	$1,342	12/31/2023
MASI	11,452	$1,342	12/31/2023
Paradigm Capital Management Inc. NY	11,353	$1,331	12/31/2023
MASI	11,353	$1,331	12/31/2023
Mitsubishi UFJ Kokusai Asset Management Co. Ltd.	11,066	$1,208	12/31/2023
MASI	11,066	$1,208	12/31/2023
Victory Capital Management Inc.	10,115	$1,186	12/31/2023
MASI	10,115	$1,186	12/31/2023
Northwestern Mutual Investment Management Company LLC	9,875	$1,157	12/31/2023
MASI	9,875	$1,157	12/31/2023
Ameritas Investment Partners Inc.	9,800	$1,149	12/31/2023
MASI	9,800	$1,149	12/31/2023
Commonwealth of Pennsylvania Public School Empls Retrmt SYS	9,794	$1,148	12/31/2023
MASI	9,794	$1,148	12/31/2023
Laurus Investment Counsel Inc.	7,710	$1,132	03/31/2024
MASI	7,710	$1,132	03/31/2024
Xponance Inc.	9,635	$1,129	12/31/2023
MASI	9,635	$1,129	12/31/2023
Handelsbanken Fonder AB	9,430	$1,105	12/31/2023
MASI	9,430	$1,105	12/31/2023
Illinois Municipal Retirement Fund	9,309	$1,091	12/31/2023
MASI	9,309	$1,091	12/31/2023
Zurcher Kantonalbank Zurich Cantonalbank	7,267	$1,067	03/31/2024
MASI	7,267	$1,067	03/31/2024
Norges Bank	8,957	$1,050	12/31/2023
MASI	8,957	$1,050	12/31/2023
Eukles Asset Management	8,864	$1,039	12/31/2023
MASI	8,864	$1,039	12/31/2023
Assenagon Asset Management S.A.	6,822	$1,002	03/31/2024
MASI	6,822	$1,002	03/31/2024
Linden Thomas Advisory Services LLC	8,539	$1,001	12/31/2023
MASI	8,539	$1,001	12/31/2023
Krensavage Asset Management LLC	8,000	$938	12/31/2023
MASI	8,000	$938	12/31/2023
Brevan Howard Capital Management LP	7,696	$902	12/31/2023
MASI	7,696	$902	12/31/2023
Utah Retirement Systems	7,521	$882	12/31/2023
MASI	7,521	$882	12/31/2023
US Bancorp DE	7,329	$859	12/31/2023
MASI	7,329	$859	12/31/2023
Scientech Research LLC	7,329	$859	12/31/2023
MASI	7,329	$859	12/31/2023
Seaport Global Advisors LLC	7,109	$833	12/31/2023
MASI	7,109	$833	12/31/2023
Raymond James Trust N.A.	5,614	$824	03/31/2024
MASI	5,614	$824	03/31/2024
JustInvest LLC	6,970	$817	12/31/2023
MASI	6,970	$817	12/31/2023
Truist Financial Corp	6,825	$800	12/31/2023
MASI	6,825	$800	12/31/2023
Advisors Asset Management Inc.	6,822	$800	12/31/2023
MASI	6,822	$800	12/31/2023
LMR Partners LLP	6,768	$793	12/31/2023
MASI	6,768	$793	12/31/2023
Pacer Advisors Inc.	6,672	$782	12/31/2023
MASI	6,672	$782	12/31/2023
Navellier & Associates Inc	6,310	$740	12/31/2023
MASI	6,310	$740	12/31/2023
Entropy Technologies LP	6,249	$732	12/31/2023
MASI	6,249	$732	12/31/2023
Walleye Trading LLC		$730	12/31/2023
MASI	6,428	$753	12/31/2023
Put	4,300	$504	12/31/2023
Call	4,100	$481	12/31/2023
Amundi	6,406	$727	12/31/2023
MASI	6,406	$727	12/31/2023
Advisor Group Holdings Inc.	6,150	$721	12/31/2023
MASI	6,150	$721	12/31/2023
State of Alaska Department of Revenue	4,794	$703	03/31/2024
MASI	4,794	$703	03/31/2024
Peloton Wealth Strategists	5,950	$697	12/31/2023
MASI	5,950	$697	12/31/2023
Public Employees Retirement Association of Colorado	5,825	$683	12/31/2023
MASI	5,825	$683	12/31/2023
APG Asset Management N.V.	5,723	$671	12/31/2023
MASI	5,723	$671	12/31/2023
Bank of Montreal Can	5,556	$667	12/31/2023
MASI	5,556	$667	12/31/2023
American Century Companies Inc.	5,588	$655	12/31/2023
MASI	5,588	$655	12/31/2023
Janney Montgomery Scott LLC	5,478	$642	12/31/2023
MASI	5,478	$642	12/31/2023
Pictet Asset Management Holding SA	5,401	$633	12/31/2023
MASI	5,401	$633	12/31/2023
Pathstone Holdings LLC	5,369	$629	12/31/2023
MASI	5,369	$629	12/31/2023
Allianz Asset Management GmbH	5,272	$618	12/31/2023
MASI	5,272	$618	12/31/2023
Stifel Financial Corp	5,142	$603	12/31/2023
MASI	5,142	$603	12/31/2023
Martin Currie Ltd.	4,997	$586	12/31/2023
MASI	4,997	$586	12/31/2023
Carmignac Gestion	5,000	$586	12/31/2023
MASI	5,000	$586	12/31/2023
Private Advisor Group LLC	4,709	$552	12/31/2023
MASI	4,709	$552	12/31/2023
LPL Financial LLC	4,543	$532	12/31/2023
MASI	4,543	$532	12/31/2023
Orion Portfolio Solutions LLC	4,571	$523	12/31/2023
MASI	4,571	$523	12/31/2023
Baird Financial Group Inc.	4,412	$517	12/31/2023
MASI	4,412	$517	12/31/2023
Maryland State Retirement & Pension System	3,736	$512	03/31/2024
MASI	3,736	$512	03/31/2024
Neuberger Berman Group LLC	4,308	$505	12/31/2023
MASI	4,308	$505	12/31/2023
North Star Asset Management Inc.	4,193	$491	12/31/2023
MASI	4,193	$491	12/31/2023
Hsbc Holdings PLC	4,132	$484	12/31/2023
MASI	4,132	$484	12/31/2023
Commerce Bank	4,085	$479	12/31/2023
MASI	4,085	$479	12/31/2023
Guggenheim Capital LLC	4,070	$477	12/31/2023
MASI	4,070	$477	12/31/2023
Verus Capital Partners LLC	4,051	$475	12/31/2023
MASI	4,051	$475	12/31/2023
CI Private Wealth LLC	4,037	$473	12/31/2023
MASI	4,037	$473	12/31/2023
SG Americas Securities LLC	4,009	$470	12/31/2023
MASI	4,009	$470	12/31/2023
Two Sigma Securities LLC		$469	12/31/2023
Call	11,100	$1,301	12/31/2023
Put	7,100	$832	12/31/2023
Franklin Resources Inc.	3,960	$464	12/31/2023
MASI	3,960	$464	12/31/2023
The PNC Financial Services Group Inc.	3,845	$451	12/31/2023
MASI	3,845	$451	12/31/2023
Vontobel Holding Ltd.	3,838	$450	12/31/2023
MASI	3,838	$450	12/31/2023
Securian Asset Management Inc	3,757	$440	12/31/2023
MASI	3,757	$440	12/31/2023
Tower Research Capital LLC TRC	3,707	$434	12/31/2023
MASI	3,707	$434	12/31/2023
Institutional & Family Asset Management LLC	3,650	$428	12/31/2023
MASI	3,650	$428	12/31/2023
Two Sigma Advisers LP	3,500	$410	12/31/2023
MASI	3,500	$410	12/31/2023
Oxford Financial Group Ltd.	3,430	$402	12/31/2023
MASI	3,430	$402	12/31/2023
Crossmark Global Holdings Inc.	3,303	$388	12/31/2023
MASI	3,303	$388	12/31/2023
AXQ Capital LP	3,300	$387	12/31/2023
MASI	3,300	$387	12/31/2023
Algert Global LLC	3,270	$383	12/31/2023
MASI	3,270	$383	12/31/2023
Mariner LLC	3,252	$381	12/31/2023
MASI	3,252	$381	12/31/2023
Wesleyan Assurance Society	2,550	$374	03/31/2024
MASI	2,550	$374	03/31/2024
First Trust Advisors LP	3,191	$374	12/31/2023
MASI	3,191	$374	12/31/2023
Wealth Enhancement Advisory Services LLC	2,498	$367	03/31/2024
MASI	2,498	$367	03/31/2024
KBC Group NV	3,090	$362	12/31/2023
MASI	3,090	$362	12/31/2023
HighTower Advisors LLC	3,072	$359	12/31/2023
MASI	3,072	$359	12/31/2023
M&G Investment Management Ltd.	3,061	$358	12/31/2023
MASI	3,061	$358	12/31/2023
DAFNA Capital Management LLC	3,000	$352	12/31/2023
MASI	3,000	$352	12/31/2023
Silvercrest Asset Management Group LLC	2,982	$350	12/31/2023
MASI	2,982	$350	12/31/2023
NEOS Investment Management LLC	2,989	$350	12/31/2023
MASI	2,989	$350	12/31/2023
MML Investors Services LLC	2,869	$336	12/31/2023
MASI	2,869	$336	12/31/2023
Nelson Van Denburg & Campbell Wealth Management Group LLC	2,805	$329	12/31/2023
MASI	2,805	$329	12/31/2023
180 Wealth Advisors LLC	2,158	$317	03/31/2024
MASI	2,158	$317	03/31/2024
Handelsinvest Investeringsforvaltning	2,132	$313	03/31/2024
MASI	2,132	$313	03/31/2024
Buckhead Capital Management LLC	2,650	$311	12/31/2023
MASI	2,650	$311	12/31/2023
Prudential Financial Inc.	2,631	$308	12/31/2023
MASI	2,631	$308	12/31/2023
Sigma Planning Corp	2,569	$301	12/31/2023
MASI	2,569	$301	12/31/2023
Juncture Wealth Strategies LLC	2,027	$298	03/31/2024
MASI	2,027	$298	03/31/2024
Oak Thistle LLC	1,976	$290	03/31/2024
MASI	1,976	$290	03/31/2024
Teacher Retirement System of Texas	2,422	$284	12/31/2023
MASI	2,422	$284	12/31/2023
KCM Investment Advisors LLC	2,425	$284	12/31/2023
MASI	2,425	$284	12/31/2023
Bessemer Group Inc.	2,407	$282	12/31/2023
MASI	2,407	$282	12/31/2023
M&T Bank Corp	2,378	$279	12/31/2023
MASI	2,378	$279	12/31/2023
ProShare Advisors LLC	2,336	$274	12/31/2023
MASI	2,336	$274	12/31/2023
AE Wealth Management LLC	2,141	$273	12/31/2023
MASI	2,141	$273	12/31/2023
Clear Street Markets LLC		$270	12/31/2023
Call	2,300	$270	12/31/2023
Coldstream Capital Management Inc.	2,292	$269	12/31/2023
MASI	2,292	$269	12/31/2023
Edgestream Partners L.P.	2,297	$269	12/31/2023
MASI	2,297	$269	12/31/2023
Mission Wealth Management LP	2,280	$267	12/31/2023
MASI	2,280	$267	12/31/2023
SeaCrest Wealth Management LLC	1,790	$263	03/31/2024
MASI	1,790	$263	03/31/2024
BancorpSouth Bank	2,172	$255	12/31/2023
MASI	2,172	$255	12/31/2023
Independent Advisor Alliance	2,036	$239	12/31/2023
MASI	2,036	$239	12/31/2023
Shelton Capital Management	1,942	$228	12/31/2023
MASI	1,942	$228	12/31/2023
Toroso Investments LLC	1,910	$224	12/31/2023
MASI	1,910	$224	12/31/2023
Pitcairn Co.	1,867	$219	12/31/2023
MASI	1,867	$219	12/31/2023
HAP Trading LLC		$216	12/31/2023
Call	11,800	$216	12/31/2023
Aviva PLC	1,714	$201	12/31/2023
MASI	1,714	$201	12/31/2023
Barrett & Company Inc.	1,133	$166	03/31/2024
MASI	1,133	$166	03/31/2024
CWM LLC	1,110	$163	03/31/2024
MASI	1,110	$163	03/31/2024
Quadrant Capital Group LLC	1,389	$163	12/31/2023
MASI	1,389	$163	12/31/2023
Russell Investments Group Ltd.	1,390	$163	12/31/2023
MASI	1,390	$163	12/31/2023
Harbor Investment Advisory LLC	970	$142	03/31/2024
MASI	970	$142	03/31/2024
Whittier Trust Co.	1,134	$133	12/31/2023
MASI	1,134	$133	12/31/2023
United Community Bank	1,052	$123	12/31/2023
MASI	1,052	$123	12/31/2023
Advisory Services Network LLC	857	$100	12/31/2023
MASI	857	$100	12/31/2023
Assetmark Inc.	827	$97	12/31/2023
MASI	827	$97	12/31/2023
CI Investments Inc.	761	$89	12/31/2023
MASI	761	$89	12/31/2023
Fifth Third Bancorp	597	$88	03/31/2024
MASI	597	$88	03/31/2024
Wahed Invest LLC	734	$86	12/31/2023
MASI	734	$86	12/31/2023
Qube Research & Technologies Ltd	684	$80	12/31/2023
MASI	684	$80	12/31/2023
VitalStone Financial LLC	597	$70	12/31/2023
MASI	597	$70	12/31/2023
WASHINGTON TRUST Co	458	$67	03/31/2024
MASI	458	$67	03/31/2024
Harvest Fund Management Co. Ltd	538	$62	12/31/2023
MASI	538	$62	12/31/2023
HHM Wealth Advisors LLC	500	$59	12/31/2023
MASI	500	$59	12/31/2023
DHJJ Financial Advisors Ltd.	360	$53	03/31/2024
MASI	360	$53	03/31/2024
Parallel Advisors LLC	445	$52	12/31/2023
MASI	445	$52	12/31/2023
Clearstead Advisors LLC	430	$50	12/31/2023
MASI	430	$50	12/31/2023
Signaturefd LLC	401	$47	12/31/2023
MASI	401	$47	12/31/2023
Lindbrook Capital LLC	289	$42	03/31/2024
MASI	289	$42	03/31/2024
Harel Insurance Investments & Financial Services Ltd.	307	$36	12/31/2023
MASI	307	$36	12/31/2023
Massmutual Trust Co. FSB ADV	239	$35	03/31/2024
MASI	239	$35	03/31/2024
EverSource Wealth Advisors LLC	295	$35	12/31/2023
MASI	295	$35	12/31/2023
Harbour Investments Inc.	219	$26	12/31/2023
MASI	219	$26	12/31/2023
Provence Wealth Management Group	225	$26	12/31/2023
MASI	225	$26	12/31/2023
Riverview Trust Co	169	$25	03/31/2024
MASI	169	$25	03/31/2024
Allworth Financial LP	162	$24	03/31/2024
MASI	162	$24	03/31/2024
Rise Advisors LLC	154	$23	03/31/2024
MASI	154	$23	03/31/2024
Covestor Ltd	195	$23	12/31/2023
MASI	195	$23	12/31/2023
NBC Securities Inc.	155	$22	03/31/2024
MASI	155	$22	03/31/2024
GAMMA Investing LLC	148	$22	03/31/2024
MASI	148	$22	03/31/2024
Spire Wealth Management	144	$21	03/31/2024
MASI	144	$21	03/31/2024
Northwestern Mutual Wealth Management Co.	150	$18	12/31/2023
MASI	150	$18	12/31/2023
GWM Advisors LLC	156	$18	12/31/2023
MASI	156	$18	12/31/2023
Quarry LP	156	$18	12/31/2023
MASI	156	$18	12/31/2023
Center for Financial Planning Inc.	100	$15	03/31/2024
MASI	100	$15	03/31/2024
BI Asset Management Fondsmaeglerselskab A S	119	$14	12/31/2023
MASI	119	$14	12/31/2023
Nomura Asset Management Co. Ltd.	110	$13	12/31/2023
MASI	110	$13	12/31/2023
LGT Financial Advisors LLC	114	$13	12/31/2023
MASI	114	$13	12/31/2023
CENTRAL TRUST Co	79	$12	03/31/2024
MASI	79	$12	03/31/2024
Sound Income Strategies LLC	85	$12	03/31/2024
MASI	85	$12	03/31/2024
First Horizon Advisors Inc.	68	$10	03/31/2024
MASI	68	$10	03/31/2024
Huntington National Bank	86	$10	12/31/2023
MASI	86	$10	12/31/2023
Glassman Wealth Services	82	$10	12/31/2023
MASI	82	$10	12/31/2023
Farmers & Merchants Trust Co of Chambersburg PA	89	$10	12/31/2023
MASI	89	$10	12/31/2023
Smithfield Trust Co.	65	$8	12/31/2023
MASI	65	$8	12/31/2023
Farther Finance Advisors LLC	68	$8	12/31/2023
MASI	68	$8	12/31/2023
JJJ Advisors Inc.	49	$7	03/31/2024
MASI	49	$7	03/31/2024
ADAR1 Capital Management LLC	58	$7	12/31/2023
MASI	58	$7	12/31/2023
Clean Yield Group	49	$6	12/31/2023
MASI	49	$6	12/31/2023
Colonial Trust Advisors	50	$6	12/31/2023
MASI	50	$6	12/31/2023
Investors Research Corp	50	$6	12/31/2023
MASI	50	$6	12/31/2023
Bear Mountain Capital Inc.	40	$5	03/31/2024
MASI	40	$5	03/31/2024
Global Retirement Partners LLC	24	$4	03/31/2024
MASI	24	$4	03/31/2024
Nisa Investment Advisors LLC	32	$4	12/31/2023
MASI	32	$4	12/31/2023
Ronald Blue Trust Inc.	38	$4	12/31/2023
MASI	38	$4	12/31/2023
Farmers & Merchants Investments Inc.	18	$3	03/31/2024
MASI	18	$3	03/31/2024
Sunbelt Securities Inc.	20	$3	03/31/2024
MASI	20	$3	03/31/2024
Hallmark Capital Management Inc.	26	$3	12/31/2023
MASI	26	$3	12/31/2023
Bell Investment Advisors Inc	23	$3	12/31/2023
MASI	23	$3	12/31/2023
Sachetta LLC	23	$3	12/31/2023
MASI	23	$3	12/31/2023
Pineridge Advisors LLC	28	$3	12/31/2023
MASI	28	$3	12/31/2023
Adirondack Trust Co.	12	$2	03/31/2024
MASI	12	$2	03/31/2024
Versant Capital Management Inc	15	$2	03/31/2024
MASI	15	$2	03/31/2024
SJS Investment Consulting Inc.	13	$2	03/31/2024
MASI	13	$2	03/31/2024
WFA Asset Management Corp	12	$2	03/31/2024
MASI	12	$2	03/31/2024
Parkside Financial Bank & Trust	18	$2	12/31/2023
MASI	18	$2	12/31/2023
JFS Wealth Advisors LLC	17	$2	12/31/2023
MASI	17	$2	12/31/2023
FinTrust Capital Advisors LLC	13	$2	12/31/2023
MASI	13	$2	12/31/2023
State of Wyoming	21	$2	12/31/2023
MASI	21	$2	12/31/2023
Quent Capital LLC	16	$2	12/31/2023
MASI	16	$2	12/31/2023
Kiely Wealth Advisory Group Inc.	15	$2	12/31/2023
MASI	15	$2	12/31/2023
Turtle Creek Wealth Advisors LLC	21	$2	12/31/2023
MASI	21	$2	12/31/2023
Private Wealth Management Group LLC	15	$2	12/31/2023
MASI	15	$2	12/31/2023
WealthCollab LLC	20	$2	12/31/2023
MASI	20	$2	12/31/2023
Mather Group LLC.	6	$1	03/31/2024
MASI	6	$1	03/31/2024
Lazard Asset Management LLC	10	$1	12/31/2023
MASI	10	$1	12/31/2023
IFP Advisors Inc	7	$1	12/31/2023
MASI	7	$1	12/31/2023
Coppell Advisory Solutions LLC	6	$1	12/31/2023
MASI	6	$1	12/31/2023
DiNuzzo Private Wealth Inc.	5	$1	12/31/2023
MASI	5	$1	12/31/2023
TD Waterhouse Canada Inc.	8	$1	12/31/2023
MASI	8	$1	12/31/2023
Capital Advisors Ltd. LLC	2	$0	03/31/2024
MASI	2	$0	03/31/2024
Financial Synergies Wealth Advisors Inc.	2	$0	03/31/2024
MASI	2	$0	03/31/2024
BOKF NA	1	$0	12/31/2023
MASI	1	$0	12/31/2023
Proequities Inc.		$0	12/31/2023
Put	0	$0	12/31/2023
Call	0	$0	12/31/2023
MASI	0	$0	12/31/2023
Fairfield Bush & CO.	3	$0	12/31/2023
MASI	3	$0	12/31/2023
Transamerica Financial Advisors Inc.	1	$0	12/31/2023
MASI	1	$0	12/31/2023
Larson Financial Group LLC	1	$0	12/31/2023
MASI	1	$0	12/31/2023
Smartleaf Asset Management LLC	1	$0	12/31/2023
MASI	1	$0	12/31/2023
Cubist Systematic Strategies LLC		$-258	12/31/2023
Put	10,500	$1,231	12/31/2023
Call	8,300	$973	12/31/2023
D. E. Shaw & Co. Inc.		$-375	12/31/2023
Put	11,100	$1,301	12/31/2023
Call	7,900	$926	12/31/2023
Walleye Capital LLC		$-575	12/31/2023
Put	7,600	$891	12/31/2023
Call	2,700	$316	12/31/2023
Simplex Trading LLC		$-1,088	03/31/2024
Put	16,300	$2,393	03/31/2024
MASI	5,595	$821	03/31/2024
Call	3,300	$484	03/31/2024
Capital Fund Management S.A.	12,955	$-5,960	12/31/2023
Put	123,900	$14,522	12/31/2023
Call	60,100	$7,044	12/31/2023
MASI	12,955	$1,518	12/31/2023

See Summary: Institutional Holders of MASI
See Details: Top 10 Hedge Funds Holding MASI
Also See: MASI Insider Buying
Also See: MASI Holdings Changes

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MASI — Performance