On this page, we present all of the funds holding ALEC from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding ALEC, with a link to that fund's top holdings. The next columns indicate the amount of ALEC stock held by each of the funds holding ALEC, followed by the ALEC position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 148 funds holding ALEC 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 ALEC), click the fund name in the "Holder" column of the funds-holding-ALEC table below.

Holder	Amount	Position Size ($ in 1000's)	As of
FMR LLC	12,620,404	$100,711	12/31/2023
ALEC	12,620,404	$100,711	12/31/2023
BlackRock Inc.	8,068,553	$64,387	12/31/2023
ALEC	8,068,553	$64,387	12/31/2023
Morgan Stanley	4,650,191	$37,109	12/31/2023
ALEC	4,650,191	$37,109	12/31/2023
Vanguard Group Inc.	4,386,541	$35,005	12/31/2023
ALEC	4,386,541	$35,005	12/31/2023
EcoR1 Capital LLC	4,056,548	$32,371	12/31/2023
ALEC	4,056,548	$32,371	12/31/2023
Braidwell LP	3,324,308	$26,528	12/31/2023
ALEC	3,324,308	$26,528	12/31/2023
State Street Corp	3,117,529	$24,878	12/31/2023
ALEC	3,117,529	$24,878	12/31/2023
Deutsche Bank AG	2,062,099	$16,456	12/31/2023
ALEC	2,062,099	$16,456	12/31/2023
JPMorgan Chase & Co.	1,863,998	$14,875	12/31/2023
ALEC	1,863,998	$14,875	12/31/2023
Geode Capital Management LLC	1,381,786	$11,028	12/31/2023
ALEC	1,381,786	$11,028	12/31/2023
Euclidean Capital LLC	1,307,858	$10,437	12/31/2023
ALEC	1,307,858	$10,437	12/31/2023
Price T Rowe Associates Inc. MD	1,201,549	$9,590	12/31/2023
ALEC	1,201,549	$9,590	12/31/2023
Deerfield Management Company L.P. Series C	1,067,810	$8,521	12/31/2023
ALEC	1,067,810	$8,521	12/31/2023
Franklin Resources Inc.	959,524	$7,657	12/31/2023
ALEC	959,524	$7,657	12/31/2023
Jacobs Levy Equity Management Inc.	794,284	$6,338	12/31/2023
ALEC	794,284	$6,338	12/31/2023
Dimensional Fund Advisors LP	764,394	$6,100	12/31/2023
ALEC	764,394	$6,100	12/31/2023
Northern Trust Corp	614,556	$4,904	12/31/2023
ALEC	614,556	$4,904	12/31/2023
DAFNA Capital Management LLC	609,905	$4,867	12/31/2023
ALEC	609,905	$4,867	12/31/2023
Renaissance Technologies LLC	571,983	$4,564	12/31/2023
ALEC	571,983	$4,564	12/31/2023
Charles Schwab Investment Management Inc.	499,529	$3,986	12/31/2023
ALEC	499,529	$3,986	12/31/2023
Alliancebernstein L.P.	492,285	$3,928	12/31/2023
ALEC	492,285	$3,928	12/31/2023
Bank of America Corp DE	440,315	$3,514	12/31/2023
ALEC	440,315	$3,514	12/31/2023
Nuveen Asset Management LLC	432,691	$3,453	12/31/2023
ALEC	432,691	$3,453	12/31/2023
Two Sigma Advisers LP	393,100	$3,137	12/31/2023
ALEC	393,100	$3,137	12/31/2023
Baillie Gifford & Co.	345,924	$2,760	12/31/2023
ALEC	345,924	$2,760	12/31/2023
New Leaf Venture Partners L.L.C.	339,569	$2,710	12/31/2023
ALEC	339,569	$2,710	12/31/2023
Goldman Sachs Group Inc.	285,893	$2,281	12/31/2023
ALEC	285,893	$2,281	12/31/2023
Walleye Capital LLC	262,126	$2,092	12/31/2023
ALEC	262,126	$2,092	12/31/2023
Campbell & CO Investment Adviser LLC	240,625	$1,920	12/31/2023
ALEC	240,625	$1,920	12/31/2023
HRT Financial LP	239,116	$1,908	12/31/2023
ALEC	239,116	$1,908	12/31/2023
Panagora Asset Management Inc.	236,645	$1,888	12/31/2023
ALEC	236,645	$1,888	12/31/2023
Millennium Management LLC	235,635	$1,880	12/31/2023
ALEC	235,635	$1,880	12/31/2023
Jupiter Asset Management Ltd.	232,219	$1,853	12/31/2023
ALEC	232,219	$1,853	12/31/2023
Barclays PLC	193,228	$1,542	12/31/2023
ALEC	193,228	$1,542	12/31/2023
Medici Capital LLC	192,747	$1,538	12/31/2023
ALEC	192,747	$1,538	12/31/2023
Two Sigma Investments LP	192,547	$1,537	12/31/2023
ALEC	192,547	$1,537	12/31/2023
Rafferty Asset Management LLC	190,911	$1,523	12/31/2023
ALEC	190,911	$1,523	12/31/2023
Nordea Investment Management AB	190,290	$1,501	12/31/2023
ALEC	190,290	$1,501	12/31/2023
D. E. Shaw & Co. Inc.	184,147	$1,469	12/31/2023
ALEC	184,147	$1,469	12/31/2023
UBS Group AG	178,692	$1,426	12/31/2023
ALEC	178,692	$1,426	12/31/2023
Alphabet Inc.	175,866	$1,403	12/31/2023
ALEC	175,866	$1,403	12/31/2023
Bank of New York Mellon Corp	230,313	$1,386	03/31/2024
ALEC	230,313	$1,386	03/31/2024
Cubist Systematic Strategies LLC	162,829	$1,299	12/31/2023
ALEC	162,829	$1,299	12/31/2023
Verition Fund Management LLC	146,445	$1,169	12/31/2023
ALEC	146,445	$1,169	12/31/2023
Stifel Financial Corp	145,759	$1,163	12/31/2023
ALEC	145,759	$1,163	12/31/2023
Acadian Asset Management LLC	142,711	$1,138	12/31/2023
ALEC	142,711	$1,138	12/31/2023
Point72 Asset Management L.P.	139,000	$1,109	12/31/2023
ALEC	139,000	$1,109	12/31/2023
State of Wisconsin Investment Board	129,033	$1,030	12/31/2023
ALEC	129,033	$1,030	12/31/2023
Victory Capital Management Inc.	125,392	$1,001	12/31/2023
ALEC	125,392	$1,001	12/31/2023
Swiss National Bank	123,900	$989	12/31/2023
ALEC	123,900	$989	12/31/2023
The Manufacturers Life Insurance Company	117,994	$942	12/31/2023
ALEC	117,994	$942	12/31/2023
TD Asset Management Inc.	111,738	$892	12/31/2023
ALEC	111,738	$892	12/31/2023
Ameriprise Financial Inc.	107,431	$857	12/31/2023
ALEC	107,431	$857	12/31/2023
Jane Street Group LLC	105,425	$841	12/31/2023
ALEC	105,425	$841	12/31/2023
Capital Impact Advisors LLC	102,381	$817	12/31/2023
ALEC	102,381	$817	12/31/2023
BNP Paribas Arbitrage SA	94,955	$758	12/31/2023
ALEC	94,955	$758	12/31/2023
Rhumbline Advisers	87,598	$699	12/31/2023
ALEC	87,598	$699	12/31/2023
Credit Suisse AG	85,298	$681	12/31/2023
ALEC	85,298	$681	12/31/2023
Citigroup Inc.	82,544	$659	12/31/2023
ALEC	82,544	$659	12/31/2023
DekaBank Deutsche Girozentrale	100,000	$605	03/31/2024
ALEC	100,000	$605	03/31/2024
Strs Ohio	73,200	$584	12/31/2023
ALEC	73,200	$584	12/31/2023
American Century Companies Inc.	72,583	$579	12/31/2023
ALEC	72,583	$579	12/31/2023
Russell Investments Group Ltd.	71,282	$569	12/31/2023
ALEC	71,282	$569	12/31/2023
California State Teachers Retirement System	66,424	$530	12/31/2023
ALEC	66,424	$530	12/31/2023
Cannell Peter B & Co. Inc.	66,177	$528	12/31/2023
ALEC	66,177	$528	12/31/2023
AQR Capital Management LLC	65,667	$524	12/31/2023
ALEC	65,667	$524	12/31/2023
XTX Topco Ltd	65,478	$523	12/31/2023
ALEC	65,478	$523	12/31/2023
UBS Asset Management Americas Inc.	64,720	$516	12/31/2023
ALEC	64,720	$516	12/31/2023
Federated Hermes Inc.	64,523	$515	12/31/2023
ALEC	64,523	$515	12/31/2023
Mirae Asset Global Investments Co. Ltd.	61,239	$489	12/31/2023
ALEC	61,239	$489	12/31/2023
Legal & General Group Plc	59,642	$476	12/31/2023
ALEC	59,642	$476	12/31/2023
Alps Advisors Inc.	56,790	$453	12/31/2023
ALEC	56,790	$453	12/31/2023
Principal Financial Group Inc.	48,755	$389	12/31/2023
ALEC	48,755	$389	12/31/2023
Susquehanna International Group LLP		$374	12/31/2023
ALEC	79,205	$632	12/31/2023
Put	55,200	$440	12/31/2023
Call	22,800	$182	12/31/2023
Truist Financial Corp	45,638	$364	12/31/2023
ALEC	45,638	$364	12/31/2023
Trexquant Investment LP	44,571	$356	12/31/2023
ALEC	44,571	$356	12/31/2023
Los Angeles Capital Management & Equity Research Inc.	58,756	$354	03/31/2024
ALEC	58,756	$354	03/31/2024
Balyasny Asset Management LLC	41,136	$328	12/31/2023
ALEC	41,136	$328	12/31/2023
Healthcare of Ontario Pension Plan Trust Fund	40,500	$323	12/31/2023
ALEC	40,500	$323	12/31/2023
Hsbc Holdings PLC	34,145	$269	12/31/2023
ALEC	34,145	$269	12/31/2023
Point72 Middle East FZE	32,726	$261	12/31/2023
ALEC	32,726	$261	12/31/2023
MetLife Investment Management LLC	31,825	$254	12/31/2023
ALEC	31,825	$254	12/31/2023
Profund Advisors LLC	31,667	$253	12/31/2023
ALEC	31,667	$253	12/31/2023
American International Group Inc.	31,550	$252	12/31/2023
ALEC	31,550	$252	12/31/2023
Utah Retirement Systems	30,858	$246	12/31/2023
ALEC	30,858	$246	12/31/2023
Invesco Ltd.	30,130	$240	12/31/2023
ALEC	30,130	$240	12/31/2023
Voya Investment Management LLC	25,946	$207	12/31/2023
ALEC	25,946	$207	12/31/2023
New York State Common Retirement Fund	25,758	$206	12/31/2023
ALEC	25,758	$206	12/31/2023
State Board of Administration of Florida Retirement System	25,570	$204	12/31/2023
ALEC	25,570	$204	12/31/2023
Cornercap Investment Counsel Inc.	24,532	$196	12/31/2023
ALEC	24,532	$196	12/31/2023
Shell Asset Management Co.	24,191	$193	12/31/2023
ALEC	24,191	$193	12/31/2023
Janus Henderson Group PLC	23,658	$189	12/31/2023
ALEC	23,658	$189	12/31/2023
Vident Advisory LLC	23,190	$185	12/31/2023
ALEC	23,190	$185	12/31/2023
Royal Bank of Canada	22,377	$179	12/31/2023
ALEC	22,377	$179	12/31/2023
Simplex Trading LLC		$178	03/31/2024
ALEC	29,132	$175	03/31/2024
Call	1,300	$7	03/31/2024
Put	800	$4	03/31/2024
Massachusetts Financial Services Co. MA	21,280	$170	12/31/2023
ALEC	21,280	$170	12/31/2023
Amundi	18,638	$151	12/31/2023
ALEC	18,638	$151	12/31/2023
Brevan Howard Capital Management LP	18,975	$151	12/31/2023
ALEC	18,975	$151	12/31/2023
NinePointTwo Capital	18,542	$147	12/31/2023
ALEC	18,542	$147	12/31/2023
Arizona State Retirement System	17,576	$140	12/31/2023
ALEC	17,576	$140	12/31/2023
Wells Fargo & Company MN	16,693	$133	12/31/2023
ALEC	16,693	$133	12/31/2023
SG Americas Securities LLC	16,726	$133	12/31/2023
ALEC	16,726	$133	12/31/2023
ProShare Advisors LLC	15,882	$127	12/31/2023
ALEC	15,882	$127	12/31/2023
Blackstone Group Inc	15,429	$123	12/31/2023
ALEC	15,429	$123	12/31/2023
Tower Research Capital LLC TRC	15,279	$122	12/31/2023
ALEC	15,279	$122	12/31/2023
AXQ Capital LP	15,300	$122	12/31/2023
ALEC	15,300	$122	12/31/2023
Citadel Advisors LLC		$119	12/31/2023
Call	30,900	$247	12/31/2023
Put	16,100	$128	12/31/2023
Jasper Ridge Partners L.P.	14,706	$117	12/31/2023
ALEC	14,706	$117	12/31/2023
Teacher Retirement System of Texas	14,509	$116	12/31/2023
ALEC	14,509	$116	12/31/2023
Caxton Associates LP	14,349	$115	12/31/2023
ALEC	14,349	$115	12/31/2023
Zurcher Kantonalbank Zurich Cantonalbank	17,760	$107	03/31/2024
ALEC	17,760	$107	03/31/2024
Walleye Trading LLC		$95	12/31/2023
ALEC	17,279	$138	12/31/2023
Put	5,400	$43	12/31/2023
Virtus ETF Advisers LLC	11,573	$92	12/31/2023
ALEC	11,573	$92	12/31/2023
PDT Partners LLC	11,157	$89	12/31/2023
ALEC	11,157	$89	12/31/2023
Man Group plc	11,164	$89	12/31/2023
ALEC	11,164	$89	12/31/2023
Vontobel Holding Ltd.	11,000	$88	12/31/2023
ALEC	11,000	$88	12/31/2023
Diversified Trust Co	14,102	$85	03/31/2024
ALEC	14,102	$85	03/31/2024
E Fund Management Co. Ltd.	10,192	$81	12/31/2023
ALEC	10,192	$81	12/31/2023
Texas Yale Capital Corp.	10,000	$80	12/31/2023
ALEC	10,000	$80	12/31/2023
China Universal Asset Management Co. Ltd.	9,733	$78	12/31/2023
ALEC	9,733	$78	12/31/2023
Public Employees Retirement Association of Colorado	7,914	$63	12/31/2023
ALEC	7,914	$63	12/31/2023
Great West Life Assurance Co. Can	7,785	$62	12/31/2023
ALEC	7,785	$62	12/31/2023
EntryPoint Capital LLC	7,191	$57	12/31/2023
ALEC	7,191	$57	12/31/2023
US Bancorp DE	6,218	$50	12/31/2023
ALEC	6,218	$50	12/31/2023
Ameritas Investment Partners Inc.	6,260	$50	12/31/2023
ALEC	6,260	$50	12/31/2023
Allspring Global Investments Holdings LLC	6,674	$40	03/31/2024
ALEC	6,674	$40	03/31/2024
Metropolitan Life Insurance Co NY	3,430	$27	12/31/2023
ALEC	3,430	$27	12/31/2023
Quantbot Technologies LP	3,000	$24	12/31/2023
ALEC	3,000	$24	12/31/2023
Amalgamated Bank	2,179	$13	03/31/2024
ALEC	2,179	$13	03/31/2024
Signaturefd LLC	1,271	$10	12/31/2023
ALEC	1,271	$10	12/31/2023
Advisory Services Network LLC	683	$5	12/31/2023
ALEC	683	$5	12/31/2023
CWM LLC	731	$4	03/31/2024
ALEC	731	$4	03/31/2024
Advisor Group Holdings Inc.	485	$4	12/31/2023
ALEC	485	$4	12/31/2023
Lindbrook Capital LLC	445	$3	03/31/2024
ALEC	445	$3	03/31/2024
National Bank of Canada FI	200	$2	12/31/2023
ALEC	200	$2	12/31/2023
Daiwa Securities Group Inc.	277	$2	12/31/2023
ALEC	277	$2	12/31/2023
Mark Sheptoff Financial Planning LLC	300	$2	12/31/2023
ALEC	300	$2	12/31/2023
Quadrant Capital Group LLC	91	$1	12/31/2023
ALEC	91	$1	12/31/2023
RFP Financial Group LLC	64	$1	12/31/2023
ALEC	64	$1	12/31/2023
GAMMA Investing LLC	74	$0	03/31/2024
ALEC	74	$0	03/31/2024
The PNC Financial Services Group Inc.	6	$0	12/31/2023
ALEC	6	$0	12/31/2023
Proequities Inc.		$0	12/31/2023
Put	0	$0	12/31/2023
ALEC	0	$0	12/31/2023
Call	0	$0	12/31/2023
Comerica Bank	21	$0	12/31/2023
ALEC	21	$0	12/31/2023
GWM Advisors LLC	32	$0	12/31/2023
ALEC	32	$0	12/31/2023
Parallel Advisors LLC	15	$0	12/31/2023
ALEC	15	$0	12/31/2023
HighMark Wealth Management LLC	50	$0	12/31/2023
ALEC	50	$0	12/31/2023
Covestor Ltd	9	$0	12/31/2023
ALEC	9	$0	12/31/2023
Farther Finance Advisors LLC	2	$0	12/31/2023
ALEC	2	$0	12/31/2023
Group One Trading L.P.	2,300	$-8	12/31/2023
Put	3,200	$26	12/31/2023
Call	2,300	$18	12/31/2023