On this page, we present all of the funds holding ZLAB from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding ZLAB, with a link to that fund's top holdings. The next columns indicate the amount of ZLAB stock held by each of the funds holding ZLAB, followed by the ZLAB position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 120 funds holding ZLAB within the last two filing periods in our coverage universe of 13F filers, with the largest position size having been reported by Wellington Management Group LLP. For more details on the positions held by Wellington Management Group LLP (or by any of the other funds holding ZLAB), click the fund name in the "Holder" column of the funds-holding-ZLAB table below.

Holder	Amount	Position Size ($ in 1000's)	As of
Wellington Management Group LLP	5,336,457	$145,845	12/31/2023
ZLAB	5,336,457	$145,845	12/31/2023
Capital World Investors	5,218,843	$142,631	12/31/2023
ZLAB	5,218,843	$142,631	12/31/2023
Janus Henderson Group PLC	4,040,282	$110,428	12/31/2023
ZLAB	4,040,282	$110,428	12/31/2023
Price T Rowe Associates Inc. MD	2,704,455	$73,914	12/31/2023
ZLAB	2,704,455	$73,914	12/31/2023
Woodline Partners LP	2,018,527	$55,166	12/31/2023
ZLAB	2,018,527	$55,166	12/31/2023
Invesco Ltd.	1,893,529	$51,750	12/31/2023
ZLAB	1,893,529	$51,750	12/31/2023
Viking Global Investors LP	1,869,283	$51,088	12/31/2023
ZLAB	1,869,283	$51,088	12/31/2023
Segantii Capital Management Ltd	1,687,569	$46,465	12/31/2023
ZLAB	1,687,569	$46,465	12/31/2023
Bamco Inc. NY	1,490,874	$40,746	12/31/2023
ZLAB	1,490,874	$40,746	12/31/2023
FMR LLC	1,236,927	$33,805	12/31/2023
ZLAB	1,236,927	$33,805	12/31/2023
Rock Springs Capital Management LP	1,137,023	$31,075	12/31/2023
ZLAB	1,137,023	$31,075	12/31/2023
Paradigm Biocapital Advisors LP	1,091,779	$29,838	12/31/2023
ZLAB	1,091,779	$29,838	12/31/2023
Legal & General Group Plc	834,457	$22,818	12/31/2023
ZLAB	834,457	$22,818	12/31/2023
Clearbridge Investments LLC	823,400	$22,504	12/31/2023
ZLAB	823,400	$22,504	12/31/2023
Capital International Investors	806,453	$22,040	12/31/2023
ZLAB	806,453	$22,040	12/31/2023
Allianz Asset Management GmbH	679,524	$18,571	12/31/2023
ZLAB	679,524	$18,571	12/31/2023
State Street Corp	659,805	$18,032	12/31/2023
ZLAB	659,805	$18,032	12/31/2023
BlackRock Inc.	560,649	$15,323	12/31/2023
ZLAB	560,649	$15,323	12/31/2023
M&G Investment Management Ltd.	457,727	$12,359	12/31/2023
ZLAB	457,727	$12,359	12/31/2023
BRILLIANCE ASSET MANAGEMENT Ltd	435,926	$11,914	12/31/2023
ZLAB	435,926	$11,914	12/31/2023
FIL Ltd	394,469	$10,781	12/31/2023
ZLAB	394,469	$10,781	12/31/2023
Candriam Luxembourg S.C.A.	325,013	$8,883	12/31/2023
ZLAB	325,013	$8,883	12/31/2023
Vivo Capital LLC	531,198	$8,510	03/31/2024
ZLAB	531,198	$8,510	03/31/2024
Morgan Stanley	290,936	$7,951	12/31/2023
ZLAB	290,936	$7,951	12/31/2023
Pictet Asset Management Holding SA	270,776	$7,400	12/31/2023
ZLAB	270,776	$7,400	12/31/2023
Millennium Management LLC	250,464	$6,845	12/31/2023
ZLAB	250,464	$6,845	12/31/2023
TD Asset Management Inc.	235,570	$6,438	12/31/2023
ZLAB	235,570	$6,438	12/31/2023
Privium Fund Management B.V.	240,683	$6,272	12/31/2023
ZLAB	240,683	$6,272	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	201,773	$5,514	12/31/2023
ZLAB	201,773	$5,514	12/31/2023
Russell Investments Group Ltd.	194,428	$5,314	12/31/2023
ZLAB	194,428	$5,314	12/31/2023
AXA S.A.	155,775	$4,257	12/31/2023
ZLAB	155,775	$4,257	12/31/2023
Goldman Sachs Group Inc.	149,305	$4,081	12/31/2023
ZLAB	149,305	$4,081	12/31/2023
Bellevue Group AG	135,000	$3,714	12/31/2023
ZLAB	135,000	$3,714	12/31/2023
Genesis Investment Management LLP	216,123	$3,462	03/31/2024
ZLAB	216,123	$3,462	03/31/2024
Mirae Asset Global Investments Co. Ltd.	114,418	$3,127	12/31/2023
ZLAB	114,418	$3,127	12/31/2023
Polar Capital Holdings Plc	101,961	$2,787	12/31/2023
ZLAB	101,961	$2,787	12/31/2023
The Manufacturers Life Insurance Company	98,570	$2,694	12/31/2023
ZLAB	98,570	$2,694	12/31/2023
Taikang Asset Management Hong Kong Co Ltd	94,500	$2,583	12/31/2023
ZLAB	94,500	$2,583	12/31/2023
Capital International Inc.	86,293	$2,358	12/31/2023
ZLAB	86,293	$2,358	12/31/2023
Bank of America Corp DE	79,998	$2,186	12/31/2023
ZLAB	79,998	$2,186	12/31/2023
Nuveen Asset Management LLC	80,000	$2,186	12/31/2023
ZLAB	80,000	$2,186	12/31/2023
Schroder Investment Management Group	78,958	$2,158	12/31/2023
ZLAB	78,958	$2,158	12/31/2023
Alliancebernstein L.P.	73,905	$2,020	12/31/2023
ZLAB	73,905	$2,020	12/31/2023
Handelsbanken Fonder AB	68,685	$1,877	12/31/2023
ZLAB	68,685	$1,877	12/31/2023
Alps Advisors Inc.	66,858	$1,827	12/31/2023
ZLAB	66,858	$1,827	12/31/2023
Jane Street Group LLC		$1,743	12/31/2023
ZLAB	153,844	$4,205	12/31/2023
Put	90,100	$2,462	12/31/2023
Aviva PLC	59,330	$1,621	12/31/2023
ZLAB	59,330	$1,621	12/31/2023
Hsbc Holdings PLC	57,348	$1,567	12/31/2023
ZLAB	57,348	$1,567	12/31/2023
Geode Capital Management LLC	54,451	$1,488	12/31/2023
ZLAB	54,451	$1,488	12/31/2023
JPMorgan Chase & Co.	40,884	$1,117	12/31/2023
ZLAB	40,884	$1,117	12/31/2023
WealthPlan Investment Management LLC	39,393	$1,077	12/31/2023
ZLAB	39,393	$1,077	12/31/2023
Great West Life Assurance Co. Can	39,476	$1,072	12/31/2023
ZLAB	39,476	$1,072	12/31/2023
Hennion & Walsh Asset Management Inc.	63,169	$1,012	03/31/2024
ZLAB	63,169	$1,012	03/31/2024
Lansdowne Partners UK LLP	35,142	$960	12/31/2023
ZLAB	35,142	$960	12/31/2023
New York State Common Retirement Fund	33,548	$917	12/31/2023
ZLAB	33,548	$917	12/31/2023
Robeco Institutional Asset Management B.V.	52,988	$849	03/31/2024
ZLAB	52,988	$849	03/31/2024
HRT Financial LP	29,154	$796	12/31/2023
ZLAB	29,154	$796	12/31/2023
UBS Group AG	24,953	$682	12/31/2023
ZLAB	24,953	$682	12/31/2023
Alberta Investment Management Corp	22,000	$601	12/31/2023
ZLAB	22,000	$601	12/31/2023
Northern Trust Corp	21,795	$596	12/31/2023
ZLAB	21,795	$596	12/31/2023
Jefferies Financial Group Inc.		$594	12/31/2023
ZLAB	62,824	$1,717	12/31/2023
Put	41,100	$1,123	12/31/2023
DekaBank Deutsche Girozentrale	36,648	$586	03/31/2024
ZLAB	36,648	$586	03/31/2024
Trexquant Investment LP	20,917	$572	12/31/2023
ZLAB	20,917	$572	12/31/2023
ADAR1 Capital Management LLC	20,000	$547	12/31/2023
ZLAB	20,000	$547	12/31/2023
Citadel Advisors LLC		$516	12/31/2023
ZLAB	30,590	$836	12/31/2023
Put	22,500	$615	12/31/2023
Call	10,800	$295	12/31/2023
Ameriprise Financial Inc.	18,056	$493	12/31/2023
ZLAB	18,056	$493	12/31/2023
Capital International Sarl	17,328	$474	12/31/2023
ZLAB	17,328	$474	12/31/2023
Bank of Montreal Can	15,889	$458	12/31/2023
ZLAB	15,889	$458	12/31/2023
Campbell & CO Investment Adviser LLC	15,795	$432	12/31/2023
ZLAB	15,795	$432	12/31/2023
Greenwoods Asset Management Hong Kong Ltd.	15,100	$413	12/31/2023
ZLAB	15,100	$413	12/31/2023
Susquehanna International Group LLP		$383	12/31/2023
Put	45,000	$1,230	12/31/2023
ZLAB	41,821	$1,143	12/31/2023
Call	17,200	$470	12/31/2023
UBS Asset Management Americas Inc.	13,466	$368	12/31/2023
ZLAB	13,466	$368	12/31/2023
Engineers Gate Manager LP	12,806	$350	12/31/2023
ZLAB	12,806	$350	12/31/2023
Deutsche Bank AG	11,936	$326	12/31/2023
ZLAB	11,936	$326	12/31/2023
NJ State Employees Deferred Compensation Plan	11,300	$309	12/31/2023
ZLAB	11,300	$309	12/31/2023
GSA Capital Partners LLP	11,021	$301	12/31/2023
ZLAB	11,021	$301	12/31/2023
Renaissance Technologies LLC	10,900	$298	12/31/2023
ZLAB	10,900	$298	12/31/2023
Virtus ETF Advisers LLC	10,798	$295	12/31/2023
ZLAB	10,798	$295	12/31/2023
Gilder Gagnon Howe & Co. LLC	10,116	$276	12/31/2023
ZLAB	10,116	$276	12/31/2023
Nomura Holdings Inc.	10,067	$275	12/31/2023
ZLAB	10,067	$275	12/31/2023
RBF Capital LLC	10,000	$273	12/31/2023
ZLAB	10,000	$273	12/31/2023
XTX Topco Ltd	9,526	$260	12/31/2023
ZLAB	9,526	$260	12/31/2023
Baader Bank INC	9,284	$253	12/31/2023
ZLAB	9,284	$253	12/31/2023
B. Metzler seel. Sohn & Co. AG	9,202	$251	12/31/2023
ZLAB	9,202	$251	12/31/2023
RWC Asset Management LLP	8,326	$228	12/31/2023
ZLAB	8,326	$228	12/31/2023
Jasper Ridge Partners L.P.	8,024	$219	12/31/2023
ZLAB	8,024	$219	12/31/2023
Kingsview Wealth Management LLC	7,396	$202	12/31/2023
ZLAB	7,396	$202	12/31/2023
Macquarie Group Ltd.	5,901	$161	12/31/2023
ZLAB	5,901	$161	12/31/2023
Shell Asset Management Co.	5,819	$159	12/31/2023
ZLAB	5,819	$159	12/31/2023
China Universal Asset Management Co. Ltd.	5,802	$159	12/31/2023
ZLAB	5,802	$159	12/31/2023
SG Americas Securities LLC	4,241	$116	12/31/2023
ZLAB	4,241	$116	12/31/2023
Sectoral Asset Management Inc	4,000	$109	12/31/2023
ZLAB	4,000	$109	12/31/2023
KBC Group NV	3,770	$103	12/31/2023
ZLAB	3,770	$103	12/31/2023
Royal Bank of Canada	3,243	$88	12/31/2023
ZLAB	3,243	$88	12/31/2023
Citigroup Inc.	2,680	$73	12/31/2023
ZLAB	2,680	$73	12/31/2023
Tower Research Capital LLC TRC	2,550	$70	12/31/2023
ZLAB	2,550	$70	12/31/2023
BNP Paribas Arbitrage SA	1,767	$48	12/31/2023
ZLAB	1,767	$48	12/31/2023
The PNC Financial Services Group Inc.	1,658	$45	12/31/2023
ZLAB	1,658	$45	12/31/2023
Rhumbline Advisers	1,413	$39	12/31/2023
ZLAB	1,413	$39	12/31/2023
Group One Trading L.P.		$33	12/31/2023
Call	1,800	$49	12/31/2023
Put	600	$16	12/31/2023
American International Group Inc.	953	$26	12/31/2023
ZLAB	953	$26	12/31/2023
Barclays PLC	600	$16	12/31/2023
ZLAB	600	$16	12/31/2023
Glassman Wealth Services	506	$14	12/31/2023
ZLAB	506	$14	12/31/2023
US Bancorp DE	332	$9	12/31/2023
ZLAB	332	$9	12/31/2023
Ronald Blue Trust Inc.	231	$6	12/31/2023
ZLAB	231	$6	12/31/2023
Daiwa Securities Group Inc.	193	$5	12/31/2023
ZLAB	193	$5	12/31/2023
CWM LLC	277	$4	03/31/2024
ZLAB	277	$4	03/31/2024
Accent Capital Management LLC	150	$4	12/31/2023
ZLAB	150	$4	12/31/2023
Quent Capital LLC	105	$3	12/31/2023
ZLAB	105	$3	12/31/2023
Quadrant Capital Group LLC	70	$2	12/31/2023
ZLAB	70	$2	12/31/2023
Advisor Group Holdings Inc.	81	$2	12/31/2023
ZLAB	81	$2	12/31/2023
GAMMA Investing LLC	35	$1	03/31/2024
ZLAB	35	$1	03/31/2024
Advisory Services Network LLC	50	$1	12/31/2023
ZLAB	50	$1	12/31/2023
Farther Finance Advisors LLC	36	$1	12/31/2023
ZLAB	36	$1	12/31/2023
Able Wealth Management LLC	24	$1	12/31/2023
ZLAB	24	$1	12/31/2023
Principal Securities Inc.	5	$0	12/31/2023
ZLAB	5	$0	12/31/2023
Proequities Inc.		$0	12/31/2023
Put	0	$0	12/31/2023
Call	0	$0	12/31/2023
ZLAB	0	$0	12/31/2023
Macroview Investment Management LLC	11	$0	12/31/2023
ZLAB	11	$0	12/31/2023
Caption Management LLC		$0	12/31/2023
Put	11,200	$306	12/31/2023
Call	11,200	$306	12/31/2023
Walleye Capital LLC		$-35	12/31/2023
Put	4,800	$131	12/31/2023
Call	3,500	$96	12/31/2023
Simplex Trading LLC	1,000	$-312	12/31/2023
Put	27,200	$743	12/31/2023
ZLAB	14,793	$404	12/31/2023
Call	1,000	$27	12/31/2023