On this page, we present all of the funds holding MYGN from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding MYGN, with a link to that fund's top holdings. The next columns indicate the amount of MYGN stock held by each of the funds holding MYGN, followed by the MYGN position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 189 funds holding MYGN within the last two filing periods in our coverage universe of 13F filers, with the largest position size having been reported by BlackRock Inc.. For more details on the positions held by BlackRock Inc. (or by any of the other funds holding MYGN), click the fund name in the "Holder" column of the funds-holding-MYGN table below.

Holder	Amount	Position Size ($ in 1000's)	As of
BlackRock Inc.	14,658,349	$280,561	12/31/2023
MYGN	14,658,349	$280,561	12/31/2023
Vanguard Group Inc.	9,954,233	$190,524	12/31/2023
MYGN	9,954,233	$190,524	12/31/2023
Camber Capital Management LP	7,635,000	$146,134	12/31/2023
MYGN	7,635,000	$146,134	12/31/2023
Wellington Management Group LLP	7,219,706	$138,185	12/31/2023
MYGN	7,219,706	$138,185	12/31/2023
Glenview Capital Management LLC	5,283,982	$101,135	12/31/2023
MYGN	5,283,982	$101,135	12/31/2023
State Street Corp	4,700,631	$89,970	12/31/2023
MYGN	4,700,631	$89,970	12/31/2023
Earnest Partners LLC	3,913,913	$74,912	12/31/2023
MYGN	3,913,913	$74,912	12/31/2023
Millennium Management LLC		$67,590	12/31/2023
MYGN	3,461,337	$66,250	12/31/2023
Call	100,000	$1,914	12/31/2023
Put	30,000	$574	12/31/2023
Bank of America Corp DE	2,985,897	$57,150	12/31/2023
MYGN	2,985,897	$57,150	12/31/2023
Dimensional Fund Advisors LP	2,680,918	$51,315	12/31/2023
MYGN	2,680,918	$51,315	12/31/2023
Artisan Partners Limited Partnership	2,433,377	$46,575	12/31/2023
MYGN	2,433,377	$46,575	12/31/2023
Sei Investments Co.	2,161,434	$41,370	12/31/2023
MYGN	2,161,434	$41,370	12/31/2023
Disciplined Growth Investors Inc. MN	1,955,236	$37,423	12/31/2023
MYGN	1,955,236	$37,423	12/31/2023
Geode Capital Management LLC	1,871,857	$35,831	12/31/2023
MYGN	1,871,857	$35,831	12/31/2023
D. E. Shaw & Co. Inc.	1,801,306	$34,477	12/31/2023
MYGN	1,801,306	$34,477	12/31/2023
Pictet Asset Management Holding SA	1,294,774	$24,782	12/31/2023
MYGN	1,294,774	$24,782	12/31/2023
Citadel Advisors LLC		$22,371	12/31/2023
MYGN	1,164,082	$22,281	12/31/2023
Call	28,400	$544	12/31/2023
Put	23,700	$454	12/31/2023
Goldman Sachs Group Inc.	1,087,989	$20,824	12/31/2023
MYGN	1,087,989	$20,824	12/31/2023
Nuveen Asset Management LLC	1,049,945	$20,096	12/31/2023
MYGN	1,049,945	$20,096	12/31/2023
Northern Trust Corp	942,137	$18,033	12/31/2023
MYGN	942,137	$18,033	12/31/2023
Charles Schwab Investment Management Inc.	926,159	$17,727	12/31/2023
MYGN	926,159	$17,727	12/31/2023
Morgan Stanley	835,907	$15,999	12/31/2023
MYGN	835,907	$15,999	12/31/2023
Bank of New York Mellon Corp	715,092	$13,687	12/31/2023
MYGN	715,092	$13,687	12/31/2023
Invesco Ltd.	703,420	$13,463	12/31/2023
MYGN	703,420	$13,463	12/31/2023
Principal Financial Group Inc.	471,736	$9,029	12/31/2023
MYGN	471,736	$9,029	12/31/2023
State Farm Mutual Automobile Insurance Co.	446,061	$8,538	12/31/2023
MYGN	446,061	$8,538	12/31/2023
Peregrine Capital Management LLC	301,182	$5,765	12/31/2023
MYGN	301,182	$5,765	12/31/2023
Rhumbline Advisers	271,222	$5,191	12/31/2023
MYGN	271,222	$5,191	12/31/2023
Ameriprise Financial Inc.	270,964	$5,186	12/31/2023
MYGN	270,964	$5,186	12/31/2023
Legal & General Group Plc	239,965	$4,593	12/31/2023
MYGN	239,965	$4,593	12/31/2023
Envestnet Asset Management Inc.	218,755	$4,187	12/31/2023
MYGN	218,755	$4,187	12/31/2023
Barclays PLC	199,195	$3,814	12/31/2023
MYGN	199,195	$3,814	12/31/2023
Natixis Advisors L.P.	190,278	$3,641	12/31/2023
MYGN	190,278	$3,641	12/31/2023
Mirae Asset Global Investments Co. Ltd.	185,483	$3,550	12/31/2023
MYGN	185,483	$3,550	12/31/2023
Public Sector Pension Investment Board	183,998	$3,522	12/31/2023
MYGN	183,998	$3,522	12/31/2023
Wells Fargo & Company MN	176,148	$3,371	12/31/2023
MYGN	176,148	$3,371	12/31/2023
Rafferty Asset Management LLC	171,399	$3,281	12/31/2023
MYGN	171,399	$3,281	12/31/2023
UBS Group AG	168,816	$3,231	12/31/2023
MYGN	168,816	$3,231	12/31/2023
Credit Suisse AG	163,012	$3,120	12/31/2023
MYGN	163,012	$3,120	12/31/2023
Swiss National Bank	161,400	$3,089	12/31/2023
MYGN	161,400	$3,089	12/31/2023
Fisher Asset Management LLC	157,969	$3,024	12/31/2023
MYGN	157,969	$3,024	12/31/2023
Macquarie Group Ltd.	148,730	$2,847	12/31/2023
MYGN	148,730	$2,847	12/31/2023
JPMorgan Chase & Co.	147,900	$2,831	12/31/2023
MYGN	147,900	$2,831	12/31/2023
Assenagon Asset Management S.A.	132,680	$2,539	12/31/2023
MYGN	132,680	$2,539	12/31/2023
New York State Common Retirement Fund	131,884	$2,524	12/31/2023
MYGN	131,884	$2,524	12/31/2023
State of Wisconsin Investment Board	129,906	$2,486	12/31/2023
MYGN	129,906	$2,486	12/31/2023
Nordea Investment Management AB	122,096	$2,338	12/31/2023
MYGN	122,096	$2,338	12/31/2023
Citigroup Inc.	119,427	$2,286	12/31/2023
MYGN	119,427	$2,286	12/31/2023
Thrivent Financial for Lutherans	118,528	$2,269	12/31/2023
MYGN	118,528	$2,269	12/31/2023
Kent Lake Capital LLC	108,377	$2,074	12/31/2023
MYGN	108,377	$2,074	12/31/2023
Alliancebernstein L.P.	108,270	$2,072	12/31/2023
MYGN	108,270	$2,072	12/31/2023
Bank of Montreal Can	97,818	$2,007	12/31/2023
MYGN	97,818	$2,007	12/31/2023
Prudential Financial Inc.	101,132	$1,936	12/31/2023
MYGN	101,132	$1,936	12/31/2023
Voloridge Investment Management LLC	99,112	$1,897	12/31/2023
MYGN	99,112	$1,897	12/31/2023
Great West Life Assurance Co. Can	96,375	$1,840	12/31/2023
MYGN	96,375	$1,840	12/31/2023
UBS Asset Management Americas Inc.	93,371	$1,787	12/31/2023
MYGN	93,371	$1,787	12/31/2023
BNP Paribas Arbitrage SA	90,009	$1,723	12/31/2023
MYGN	90,009	$1,723	12/31/2023
California State Teachers Retirement System	86,223	$1,650	12/31/2023
MYGN	86,223	$1,650	12/31/2023
Victory Capital Management Inc.	84,587	$1,619	12/31/2023
MYGN	84,587	$1,619	12/31/2023
Comerica Bank	82,838	$1,586	12/31/2023
MYGN	82,838	$1,586	12/31/2023
Fifth Third Bancorp	77,803	$1,489	12/31/2023
MYGN	77,803	$1,489	12/31/2023
Texas Permanent School Fund	76,596	$1,466	12/31/2023
MYGN	76,596	$1,466	12/31/2023
Jane Street Group LLC		$1,397	12/31/2023
MYGN	62,806	$1,202	12/31/2023
Call	10,200	$195	12/31/2023
New York State Teachers Retirement System	70,798	$1,355	12/31/2023
MYGN	70,798	$1,355	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	61,357	$1,174	12/31/2023
MYGN	61,357	$1,174	12/31/2023
State of Alaska Department of Revenue	53,935	$1,149	03/31/2024
MYGN	53,935	$1,149	03/31/2024
Caption Management LLC	57,845	$1,107	12/31/2023
MYGN	57,845	$1,107	12/31/2023
Federated Hermes Inc.	55,009	$1,053	12/31/2023
MYGN	55,009	$1,053	12/31/2023
Pura Vida Investments LLC	50,000	$957	12/31/2023
MYGN	50,000	$957	12/31/2023
Monashee Investment Management LLC	50,000	$957	12/31/2023
MYGN	50,000	$957	12/31/2023
Price T Rowe Associates Inc. MD	47,231	$905	12/31/2023
MYGN	47,231	$905	12/31/2023
American Century Companies Inc.	47,041	$900	12/31/2023
MYGN	47,041	$900	12/31/2023
Voya Investment Management LLC	46,685	$894	12/31/2023
MYGN	46,685	$894	12/31/2023
State of Tennessee Treasury Department	46,114	$883	12/31/2023
MYGN	46,114	$883	12/31/2023
Engineers Gate Manager LP	45,146	$864	12/31/2023
MYGN	45,146	$864	12/31/2023
Louisiana State Employees Retirement System	44,400	$850	12/31/2023
MYGN	44,400	$850	12/31/2023
American International Group Inc.	44,320	$848	12/31/2023
MYGN	44,320	$848	12/31/2023
Yousif Capital Management LLC	44,096	$844	12/31/2023
MYGN	44,096	$844	12/31/2023
MetLife Investment Management LLC	42,669	$817	12/31/2023
MYGN	42,669	$817	12/31/2023
Strs Ohio	41,300	$790	12/31/2023
MYGN	41,300	$790	12/31/2023
Franklin Resources Inc.	41,114	$787	12/31/2023
MYGN	41,114	$787	12/31/2023
The Manufacturers Life Insurance Company	41,117	$787	12/31/2023
MYGN	41,117	$787	12/31/2023
Squarepoint Ops LLC	41,004	$785	12/31/2023
MYGN	41,004	$785	12/31/2023
AIMZ Investment Advisors LLC	40,785	$781	12/31/2023
MYGN	40,785	$781	12/31/2023
Deutsche Bank AG	40,599	$777	12/31/2023
MYGN	40,599	$777	12/31/2023
Janus Henderson Group PLC	39,876	$763	12/31/2023
MYGN	39,876	$763	12/31/2023
Two Sigma Investments LP	37,200	$712	12/31/2023
MYGN	37,200	$712	12/31/2023
Maryland State Retirement & Pension System	31,903	$680	03/31/2024
MYGN	31,903	$680	03/31/2024
SG Americas Securities LLC	34,420	$659	12/31/2023
MYGN	34,420	$659	12/31/2023
Susquehanna International Group LLP	34,360	$658	12/31/2023
MYGN	34,360	$658	12/31/2023
Ensign Peak Advisors Inc	33,200	$635	12/31/2023
MYGN	33,200	$635	12/31/2023
DekaBank Deutsche Girozentrale	32,292	$631	12/31/2023
MYGN	32,292	$631	12/31/2023
Profund Advisors LLC	32,534	$623	12/31/2023
MYGN	32,534	$623	12/31/2023
Amalgamated Bank	32,359	$619	12/31/2023
MYGN	32,359	$619	12/31/2023
AQR Capital Management LLC	28,598	$547	12/31/2023
MYGN	28,598	$547	12/31/2023
Captrust Financial Advisors	26,576	$509	12/31/2023
MYGN	26,576	$509	12/31/2023
Teachers Retirement System of The State of Kentucky	26,128	$500	12/31/2023
MYGN	26,128	$500	12/31/2023
Oregon Public Employees Retirement Fund	25,964	$497	12/31/2023
MYGN	25,964	$497	12/31/2023
Allianz Asset Management GmbH	23,900	$457	12/31/2023
MYGN	23,900	$457	12/31/2023
State Board of Administration of Florida Retirement System	23,057	$441	12/31/2023
MYGN	23,057	$441	12/31/2023
Arizona State Retirement System	22,891	$438	12/31/2023
MYGN	22,891	$438	12/31/2023
Virtu Financial LLC	22,366	$428	12/31/2023
MYGN	22,366	$428	12/31/2023
Two Sigma Advisers LP	22,000	$421	12/31/2023
MYGN	22,000	$421	12/31/2023
ProShare Advisors LLC	21,003	$402	12/31/2023
MYGN	21,003	$402	12/31/2023
Y Intercept Hong Kong Ltd	20,905	$400	12/31/2023
MYGN	20,905	$400	12/31/2023
Zurcher Kantonalbank Zurich Cantonalbank	20,305	$389	12/31/2023
MYGN	20,305	$389	12/31/2023
CWM Advisors LLC	20,214	$387	12/31/2023
MYGN	20,214	$387	12/31/2023
Stifel Financial Corp	19,247	$368	12/31/2023
MYGN	19,247	$368	12/31/2023
Commonwealth of Pennsylvania Public School Empls Retrmt SYS	19,134	$366	12/31/2023
MYGN	19,134	$366	12/31/2023
Qube Research & Technologies Ltd	19,070	$365	12/31/2023
MYGN	19,070	$365	12/31/2023
Jump Financial LLC	19,047	$365	12/31/2023
MYGN	19,047	$365	12/31/2023
Teacher Retirement System of Texas	18,936	$362	12/31/2023
MYGN	18,936	$362	12/31/2023
Tower Research Capital LLC TRC	18,711	$358	12/31/2023
MYGN	18,711	$358	12/31/2023
Walleye Capital LLC		$349	12/31/2023
MYGN	17,228	$330	12/31/2023
Call	2,000	$38	12/31/2023
Put	1,000	$19	12/31/2023
Beverly Hills Private Wealth LLC	17,601	$337	12/31/2023
MYGN	17,601	$337	12/31/2023
Handelsbanken Fonder AB	17,288	$331	12/31/2023
MYGN	17,288	$331	12/31/2023
Cipher Capital LP	16,526	$316	12/31/2023
MYGN	16,526	$316	12/31/2023
Royal Bank of Canada	15,719	$301	12/31/2023
MYGN	15,719	$301	12/31/2023
Mutual of America Capital Management LLC	15,519	$297	12/31/2023
MYGN	15,519	$297	12/31/2023
Amundi	16,428	$297	12/31/2023
MYGN	16,428	$297	12/31/2023
HighTower Advisors LLC	15,588	$295	12/31/2023
MYGN	15,588	$295	12/31/2023
FMR LLC	15,243	$292	12/31/2023
MYGN	15,243	$292	12/31/2023
Oppenheimer & Co. Inc.	15,188	$291	12/31/2023
MYGN	15,188	$291	12/31/2023
Tudor Investment Corp Et Al	14,856	$284	12/31/2023
MYGN	14,856	$284	12/31/2023
Mariner LLC	14,826	$284	12/31/2023
MYGN	14,826	$284	12/31/2023
Monticello Wealth Management LLC	14,617	$280	12/31/2023
MYGN	14,617	$280	12/31/2023
Centiva Capital LP	14,169	$271	12/31/2023
MYGN	14,169	$271	12/31/2023
NorthCrest Asset Manangement LLC	12,600	$269	03/31/2024
MYGN	12,600	$269	03/31/2024
Cresset Asset Management LLC	13,455	$258	12/31/2023
MYGN	13,455	$258	12/31/2023
Everence Capital Management Inc.	13,280	$254	12/31/2023
MYGN	13,280	$254	12/31/2023
Public Employees Retirement Association of Colorado	12,811	$245	12/31/2023
MYGN	12,811	$245	12/31/2023
Vident Advisory LLC	12,802	$245	12/31/2023
MYGN	12,802	$245	12/31/2023
Lazard Asset Management LLC	12,107	$231	12/31/2023
MYGN	12,107	$231	12/31/2023
China Universal Asset Management Co. Ltd.	10,253	$196	12/31/2023
MYGN	10,253	$196	12/31/2023
Allspring Global Investments Holdings LLC	8,805	$188	03/31/2024
MYGN	8,805	$188	03/31/2024
Advisor Group Holdings Inc.	9,476	$181	12/31/2023
MYGN	9,476	$181	12/31/2023
Ameritas Investment Partners Inc.	8,027	$154	12/31/2023
MYGN	8,027	$154	12/31/2023
Ronald Blue Trust Inc.	6,729	$129	12/31/2023
MYGN	6,729	$129	12/31/2023
The PNC Financial Services Group Inc.	5,609	$107	12/31/2023
MYGN	5,609	$107	12/31/2023
Metropolitan Life Insurance Co NY	4,936	$94	12/31/2023
MYGN	4,936	$94	12/31/2023
Proequities Inc.		$86	12/31/2023
MYGN	4,478	$86	12/31/2023
Put	0	$0	12/31/2023
Call	0	$0	12/31/2023
Group One Trading L.P.		$84	12/31/2023
Call	4,400	$84	12/31/2023
Nisa Investment Advisors LLC	3,885	$74	12/31/2023
MYGN	3,885	$74	12/31/2023
EntryPoint Capital LLC	2,819	$54	12/31/2023
MYGN	2,819	$54	12/31/2023
KBC Group NV	2,511	$48	12/31/2023
MYGN	2,511	$48	12/31/2023
Pin Oak Investment Advisors Inc.	2,000	$38	12/31/2023
MYGN	2,000	$38	12/31/2023
CWM LLC	1,391	$30	03/31/2024
MYGN	1,391	$30	03/31/2024
GAMMA Investing LLC	1,218	$26	03/31/2024
MYGN	1,218	$26	03/31/2024
Versant Capital Management Inc	1,013	$22	03/31/2024
MYGN	1,013	$22	03/31/2024
First Horizon Advisors Inc.	1,175	$22	12/31/2023
MYGN	1,175	$22	12/31/2023
Stone House Investment Management LLC	1,000	$19	12/31/2023
MYGN	1,000	$19	12/31/2023
Tompkins Financial Corp	840	$18	03/31/2024
MYGN	840	$18	03/31/2024
Public Employees Retirement System of Ohio	814	$16	12/31/2023
MYGN	814	$16	12/31/2023
Parallel Advisors LLC	809	$15	12/31/2023
MYGN	809	$15	12/31/2023
Hexagon Capital Partners LLC	652	$14	03/31/2024
MYGN	652	$14	03/31/2024
Quadrant Capital Group LLC	671	$13	12/31/2023
MYGN	671	$13	12/31/2023
Simplex Trading LLC		$10	12/31/2023
Call	1,900	$36	12/31/2023
Put	1,800	$34	12/31/2023
MYGN	412	$8	12/31/2023
Principal Securities Inc.	476	$9	12/31/2023
MYGN	476	$9	12/31/2023
EverSource Wealth Advisors LLC	463	$9	12/31/2023
MYGN	463	$9	12/31/2023
US Bancorp DE	420	$8	12/31/2023
MYGN	420	$8	12/31/2023
Daiwa Securities Group Inc.	326	$6	12/31/2023
MYGN	326	$6	12/31/2023
DAGCO Inc.	276	$5	12/31/2023
MYGN	276	$5	12/31/2023
Dynamic Wealth Strategies LLC	276	$5	12/31/2023
MYGN	276	$5	12/31/2023
Byrne Asset Management LLC	250	$5	12/31/2023
MYGN	250	$5	12/31/2023
Pineridge Advisors LLC	236	$5	12/31/2023
MYGN	236	$5	12/31/2023
BOKF NA	159	$3	12/31/2023
MYGN	159	$3	12/31/2023
Bessemer Group Inc.	135	$3	12/31/2023
MYGN	135	$3	12/31/2023
WASHINGTON TRUST Co	164	$3	12/31/2023
MYGN	164	$3	12/31/2023
GHP Investment Advisors Inc.	175	$3	12/31/2023
MYGN	175	$3	12/31/2023
Sittner & Nelson LLC	150	$3	12/31/2023
MYGN	150	$3	12/31/2023
Jones Financial Companies Lllp	106	$2	12/31/2023
MYGN	106	$2	12/31/2023
Clear Street Markets LLC	100	$2	12/31/2023
MYGN	100	$2	12/31/2023
Steward Partners Investment Advisory LLC	129	$2	12/31/2023
MYGN	129	$2	12/31/2023
Lindbrook Capital LLC	103	$2	12/31/2023
MYGN	103	$2	12/31/2023
Farmers & Merchants Investments Inc.	60	$1	03/31/2024
MYGN	60	$1	03/31/2024
Cullen Frost Bankers Inc.	74	$1	12/31/2023
MYGN	74	$1	12/31/2023
Northwestern Mutual Wealth Management Co.	42	$1	12/31/2023
MYGN	42	$1	12/31/2023
Signaturefd LLC	60	$1	12/31/2023
MYGN	60	$1	12/31/2023
Glassman Wealth Services	61	$1	12/31/2023
MYGN	61	$1	12/31/2023
Russell Investments Group Ltd.	31	$1	12/31/2023
MYGN	31	$1	12/31/2023
Farther Finance Advisors LLC	34	$1	12/31/2023
MYGN	34	$1	12/31/2023
Sound Income Strategies LLC	22	$0	03/31/2024
MYGN	22	$0	03/31/2024
SJS Investment Consulting Inc.	13	$0	03/31/2024
MYGN	13	$0	03/31/2024
Parkside Financial Bank & Trust	17	$0	12/31/2023
MYGN	17	$0	12/31/2023
Allworth Financial LP	15	$0	12/31/2023
MYGN	15	$0	12/31/2023
JFS Wealth Advisors LLC	19	$0	12/31/2023
MYGN	19	$0	12/31/2023
JNBA Financial Advisors	10	$0	12/31/2023
MYGN	10	$0	12/31/2023
Tucker Asset Management LLC	12	$0	12/31/2023
MYGN	12	$0	12/31/2023
Covestor Ltd	6	$0	12/31/2023
MYGN	6	$0	12/31/2023
DiNuzzo Private Wealth Inc.	7	$0	12/31/2023
MYGN	7	$0	12/31/2023