There is a long list of 82 institutional holders of ALVR within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of ALVR by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-ALVR table below, the initial column indicates the name of each top institutional holder of ALVR, with a link to that fund's top holdings. The next columns indicate the amount of ALVR stock held by each of the institutional holders of ALVR, followed by the ALVR position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Artal Group S.A.	6,597,167	$4,485	12/31/2023
ALVR	6,597,167	$4,485	12/31/2023
FMR LLC	5,692,782	$3,870	12/31/2023
ALVR	5,692,782	$3,870	12/31/2023
Millennium Management LLC	3,904,009	$2,654	12/31/2023
ALVR	3,904,009	$2,654	12/31/2023
BlackRock Inc.	3,526,112	$2,397	12/31/2023
ALVR	3,526,112	$2,397	12/31/2023
Vanguard Group Inc.	2,938,605	$1,998	12/31/2023
ALVR	2,938,605	$1,998	12/31/2023
Woodline Partners LP	2,511,004	$1,707	12/31/2023
ALVR	2,511,004	$1,707	12/31/2023
Redmile Group LLC	1,907,969	$1,297	12/31/2023
ALVR	1,907,969	$1,297	12/31/2023
Geode Capital Management LLC	1,253,238	$852	12/31/2023
ALVR	1,253,238	$852	12/31/2023
American International Group Inc.	1,154,193	$785	12/31/2023
ALVR	1,154,193	$785	12/31/2023
State Street Corp	1,081,104	$735	12/31/2023
ALVR	1,081,104	$735	12/31/2023
Renaissance Technologies LLC	761,965	$518	12/31/2023
ALVR	761,965	$518	12/31/2023
Morgan Stanley	512,517	$348	12/31/2023
ALVR	512,517	$348	12/31/2023
Charles Schwab Investment Management Inc.	475,832	$323	12/31/2023
ALVR	475,832	$323	12/31/2023
Goldman Sachs Group Inc.	466,071	$317	12/31/2023
ALVR	466,071	$317	12/31/2023
Northern Trust Corp	429,178	$292	12/31/2023
ALVR	429,178	$292	12/31/2023
JPMorgan Chase & Co.	364,917	$248	12/31/2023
ALVR	364,917	$248	12/31/2023
Marshall Wace LLP	324,658	$221	12/31/2023
ALVR	324,658	$221	12/31/2023
Squarepoint Ops LLC	285,138	$194	12/31/2023
ALVR	285,138	$194	12/31/2023
Susquehanna International Group LLP		$181	12/31/2023
Call	231,300	$157	12/31/2023
ALVR	35,899	$24	12/31/2023
Two Sigma Investments LP	264,555	$180	12/31/2023
ALVR	264,555	$180	12/31/2023
Citadel Advisors LLC		$178	12/31/2023
ALVR	239,869	$163	12/31/2023
Call	29,300	$20	12/31/2023
Put	7,000	$5	12/31/2023
D. E. Shaw & Co. Inc.	252,639	$172	12/31/2023
ALVR	252,639	$172	12/31/2023
Pennant Investors LP	215,700	$147	12/31/2023
ALVR	215,700	$147	12/31/2023
GSA Capital Partners LLP	208,781	$142	12/31/2023
ALVR	208,781	$142	12/31/2023
Bank of New York Mellon Corp	204,974	$139	12/31/2023
ALVR	204,974	$139	12/31/2023
Commonwealth Equity Services LLC	203,500	$138	12/31/2023
ALVR	203,500	$138	12/31/2023
Acadian Asset Management LLC	199,785	$134	12/31/2023
ALVR	199,785	$134	12/31/2023
Qube Research & Technologies Ltd	197,018	$134	12/31/2023
ALVR	197,018	$134	12/31/2023
683 Capital Management LLC	190,581	$130	12/31/2023
ALVR	190,581	$130	12/31/2023
AQR Capital Management LLC	124,400	$85	12/31/2023
ALVR	124,400	$85	12/31/2023
Two Sigma Advisers LP	98,800	$67	12/31/2023
ALVR	98,800	$67	12/31/2023
Graham Capital Management L.P.	82,247	$56	12/31/2023
ALVR	82,247	$56	12/31/2023
Samsara BioCapital LLC	82,336	$56	12/31/2023
ALVR	82,336	$56	12/31/2023
Group One Trading L.P.		$55	12/31/2023
Call	80,400	$55	12/31/2023
Lido Advisors LLC	79,416	$54	12/31/2023
ALVR	79,416	$54	12/31/2023
Bank of America Corp DE	70,162	$48	12/31/2023
ALVR	70,162	$48	12/31/2023
Dimensional Fund Advisors LP	71,169	$48	12/31/2023
ALVR	71,169	$48	12/31/2023
Barclays PLC	69,648	$47	12/31/2023
ALVR	69,648	$47	12/31/2023
Alliancebernstein L.P.	64,430	$44	12/31/2023
ALVR	64,430	$44	12/31/2023
Rhumbline Advisers	63,618	$43	12/31/2023
ALVR	63,618	$43	12/31/2023
Jane Street Group LLC	63,727	$43	12/31/2023
ALVR	63,727	$43	12/31/2023
Engineers Gate Manager LP	62,752	$43	12/31/2023
ALVR	62,752	$43	12/31/2023
UBS Group AG	60,628	$41	12/31/2023
ALVR	60,628	$41	12/31/2023
Twin Focus Capital Partners LLC	59,359	$40	12/31/2023
ALVR	59,359	$40	12/31/2023
XTX Topco Ltd	54,815	$37	12/31/2023
ALVR	54,815	$37	12/31/2023
Tudor Investment Corp Et Al	49,620	$34	12/31/2023
ALVR	49,620	$34	12/31/2023
Amundi	45,448	$31	12/31/2023
ALVR	45,448	$31	12/31/2023
Price T Rowe Associates Inc. MD	43,086	$30	12/31/2023
ALVR	43,086	$30	12/31/2023
Virtu Financial LLC	41,269	$28	12/31/2023
ALVR	41,269	$28	12/31/2023
Two Sigma Securities LLC	36,004	$24	12/31/2023
ALVR	36,004	$24	12/31/2023