On this page, we present all of the funds holding ALTO from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding ALTO, with a link to that fund's top holdings. The next columns indicate the amount of ALTO stock held by each of the funds holding ALTO, followed by the ALTO position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 97 funds holding ALTO within the last two filing periods in our coverage universe of 13F filers, with the largest position size having been reported by Vanguard Group Inc.. For more details on the positions held by Vanguard Group Inc. (or by any of the other funds holding ALTO), click the fund name in the "Holder" column of the funds-holding-ALTO table below.

Holder	Amount	Position Size ($ in 1000's)	As of
Vanguard Group Inc.	3,806,046	$10,124	12/31/2023
ALTO	3,806,046	$10,124	12/31/2023
Hotchkis & Wiley Capital Management LLC	3,340,080	$8,885	12/31/2023
ALTO	3,340,080	$8,885	12/31/2023
Dimensional Fund Advisors LP	2,608,198	$6,938	12/31/2023
ALTO	2,608,198	$6,938	12/31/2023
Charles Schwab Investment Management Inc.	2,494,032	$6,634	12/31/2023
ALTO	2,494,032	$6,634	12/31/2023
Susquehanna International Group LLP		$6,447	12/31/2023
ALTO	1,393,666	$3,707	12/31/2023
Call	1,120,500	$2,981	12/31/2023
Put	90,600	$241	12/31/2023
BlackRock Inc.	2,253,972	$5,996	12/31/2023
ALTO	2,253,972	$5,996	12/31/2023
D. E. Shaw & Co. Inc.	1,354,886	$3,604	12/31/2023
ALTO	1,354,886	$3,604	12/31/2023
HighTower Advisors LLC		$3,417	12/31/2023
ALTO	1,388,127	$3,692	12/31/2023
Put	205,000	$275	12/31/2023
Maven Securities LTD	900,000	$2,394	12/31/2023
ALTO	900,000	$2,394	12/31/2023
Geode Capital Management LLC	867,972	$2,309	12/31/2023
ALTO	867,972	$2,309	12/31/2023
Clear Sky Advisers LLC	778,677	$2,071	12/31/2023
ALTO	778,677	$2,071	12/31/2023
Renaissance Technologies LLC	755,000	$2,008	12/31/2023
ALTO	755,000	$2,008	12/31/2023
Group One Trading L.P.		$1,878	12/31/2023
Call	445,700	$1,186	12/31/2023
ALTO	283,852	$755	12/31/2023
Put	23,700	$63	12/31/2023
Creative Financial Designs Inc. ADV	692,812	$1,843	12/31/2023
ALTO	692,812	$1,843	12/31/2023
Qube Research & Technologies Ltd	691,194	$1,839	12/31/2023
ALTO	691,194	$1,839	12/31/2023
Laurion Capital Management LP	653,457	$1,738	12/31/2023
ALTO	653,457	$1,738	12/31/2023
Citadel Advisors LLC		$1,583	12/31/2023
Call	411,500	$1,095	12/31/2023
ALTO	279,828	$744	12/31/2023
Put	96,200	$256	12/31/2023
Acadian Asset Management LLC	539,392	$1,433	12/31/2023
ALTO	539,392	$1,433	12/31/2023
Invesco Ltd.	499,200	$1,328	12/31/2023
ALTO	499,200	$1,328	12/31/2023
Jane Street Group LLC	496,668	$1,321	12/31/2023
ALTO	496,668	$1,321	12/31/2023
Baird Financial Group Inc.	454,350	$1,209	12/31/2023
ALTO	454,350	$1,209	12/31/2023
Ancora Advisors LLC	418,049	$1,112	12/31/2023
ALTO	418,049	$1,112	12/31/2023
Ameriprise Financial Inc.	386,535	$1,028	12/31/2023
ALTO	386,535	$1,028	12/31/2023
State Street Corp	273,597	$728	12/31/2023
ALTO	273,597	$728	12/31/2023
Man Group plc	262,888	$699	12/31/2023
ALTO	262,888	$699	12/31/2023
Bridgeway Capital Management Inc.	252,000	$670	12/31/2023
ALTO	252,000	$670	12/31/2023
The Manufacturers Life Insurance Company	247,539	$658	12/31/2023
ALTO	247,539	$658	12/31/2023
Goldman Sachs Group Inc.	240,574	$640	12/31/2023
ALTO	240,574	$640	12/31/2023
Morgan Stanley	220,632	$587	12/31/2023
ALTO	220,632	$587	12/31/2023
Jump Financial LLC	210,347	$560	12/31/2023
ALTO	210,347	$560	12/31/2023
Susquehanna Portfolio Strategies LLC	203,676	$542	12/31/2023
ALTO	203,676	$542	12/31/2023
Aufman Associates Inc	192,912	$513	12/31/2023
ALTO	192,912	$513	12/31/2023
Barclays PLC	187,724	$499	12/31/2023
ALTO	187,724	$499	12/31/2023
Northern Trust Corp	184,262	$490	12/31/2023
ALTO	184,262	$490	12/31/2023
Millennium Management LLC	182,096	$484	12/31/2023
ALTO	182,096	$484	12/31/2023
Citigroup Inc.	172,770	$460	12/31/2023
ALTO	172,770	$460	12/31/2023
GTS Securities LLC		$451	12/31/2023
Call	105,200	$280	12/31/2023
ALTO	85,694	$228	12/31/2023
Put	21,600	$57	12/31/2023
Sei Investments Co.	131,770	$351	12/31/2023
ALTO	131,770	$351	12/31/2023
State of Wyoming	120,643	$321	12/31/2023
ALTO	120,643	$321	12/31/2023
Two Sigma Investments LP	114,110	$304	12/31/2023
ALTO	114,110	$304	12/31/2023
Squarepoint Ops LLC		$299	12/31/2023
Call	100,000	$266	12/31/2023
ALTO	12,249	$33	12/31/2023
Engineers Gate Manager LP	99,926	$266	12/31/2023
ALTO	99,926	$266	12/31/2023
Simplex Trading LLC		$260	03/31/2024
ALTO	77,871	$169	03/31/2024
Call	58,200	$126	03/31/2024
Put	16,500	$35	03/31/2024
Boothbay Fund Management LLC	96,077	$256	12/31/2023
ALTO	96,077	$256	12/31/2023
683 Capital Management LLC	90,085	$240	12/31/2023
ALTO	90,085	$240	12/31/2023
Algert Global LLC	85,490	$227	12/31/2023
ALTO	85,490	$227	12/31/2023
American Century Companies Inc.	73,137	$195	12/31/2023
ALTO	73,137	$195	12/31/2023
Bank of America Corp DE	67,228	$179	12/31/2023
ALTO	67,228	$179	12/31/2023
ExodusPoint Capital Management LP	67,100	$178	12/31/2023
ALTO	67,100	$178	12/31/2023
Wolverine Trading LLC		$155	12/31/2023
Call	65,200	$173	12/31/2023
Put	60,300	$160	12/31/2023
ALTO	53,315	$142	12/31/2023
Verition Fund Management LLC	58,102	$155	12/31/2023
ALTO	58,102	$155	12/31/2023
Vahanian & Associates Financial Planning Inc.	57,000	$152	12/31/2023
ALTO	57,000	$152	12/31/2023
Aigen Investment Management LP	50,835	$135	12/31/2023
ALTO	50,835	$135	12/31/2023
Enterprise Financial Services Corp	50,000	$133	12/31/2023
ALTO	50,000	$133	12/31/2023
Quantbot Technologies LP	39,068	$104	12/31/2023
ALTO	39,068	$104	12/31/2023
Stifel Financial Corp	38,800	$103	12/31/2023
ALTO	38,800	$103	12/31/2023
Brandywine Global Investment Management LLC	36,370	$97	12/31/2023
ALTO	36,370	$97	12/31/2023
Schonfeld Strategic Advisors LLC	35,974	$96	12/31/2023
ALTO	35,974	$96	12/31/2023
Y Intercept Hong Kong Ltd	30,295	$81	12/31/2023
ALTO	30,295	$81	12/31/2023
Price T Rowe Associates Inc. MD	29,600	$79	12/31/2023
ALTO	29,600	$79	12/31/2023
Hsbc Holdings PLC	27,401	$74	12/31/2023
ALTO	27,401	$74	12/31/2023
Graham Capital Management L.P.	26,921	$72	12/31/2023
ALTO	26,921	$72	12/31/2023
LPL Financial LLC	26,902	$72	12/31/2023
ALTO	26,902	$72	12/31/2023
Cetera Advisor Networks LLC	27,010	$72	12/31/2023
ALTO	27,010	$72	12/31/2023
Mirabella Financial Services LLP	27,120	$72	12/31/2023
ALTO	27,120	$72	12/31/2023
Brendel Financial Advisors LLC	26,613	$71	12/31/2023
ALTO	26,613	$71	12/31/2023
Tower Research Capital LLC TRC	23,955	$64	12/31/2023
ALTO	23,955	$64	12/31/2023
Wells Fargo & Company MN	21,551	$57	12/31/2023
ALTO	21,551	$57	12/31/2023
FMR LLC	19,453	$52	12/31/2023
ALTO	19,453	$52	12/31/2023
Two Sigma Advisers LP	18,300	$49	12/31/2023
ALTO	18,300	$49	12/31/2023
Point72 Asia Singapore Pte. Ltd.	18,500	$49	12/31/2023
ALTO	18,500	$49	12/31/2023
Brevan Howard Capital Management LP	15,602	$42	12/31/2023
ALTO	15,602	$42	12/31/2023
Advisor Group Holdings Inc.	15,057	$40	12/31/2023
ALTO	15,057	$40	12/31/2023
HRT Financial LP	14,791	$39	12/31/2023
ALTO	14,791	$39	12/31/2023
Cubist Systematic Strategies LLC	12,151	$32	12/31/2023
ALTO	12,151	$32	12/31/2023
Two Sigma Securities LLC	11,664	$31	12/31/2023
ALTO	11,664	$31	12/31/2023
Prudential Financial Inc.	11,033	$29	12/31/2023
ALTO	11,033	$29	12/31/2023
Credit Agricole S A	10,000	$27	12/31/2023
ALTO	10,000	$27	12/31/2023
Public Employees Retirement System of Ohio	9,949	$26	12/31/2023
ALTO	9,949	$26	12/31/2023
Great West Life Assurance Co. Can	9,750	$26	12/31/2023
ALTO	9,750	$26	12/31/2023
Point72 Middle East FZE	7,366	$20	12/31/2023
ALTO	7,366	$20	12/31/2023
GoalVest Advisory LLC	6,439	$14	03/31/2024
ALTO	6,439	$14	03/31/2024
Banque Cantonale Vaudoise	6,000	$13	03/31/2024
ALTO	6,000	$13	03/31/2024
Rhumbline Advisers	4,756	$13	12/31/2023
ALTO	4,756	$13	12/31/2023
Russell Investments Group Ltd.	4,753	$13	12/31/2023
ALTO	4,753	$13	12/31/2023
Tradewinds Capital Management LLC	2,173	$5	03/31/2024
ALTO	2,173	$5	03/31/2024
M&R Capital Management Inc.	1,000	$2	03/31/2024
ALTO	1,000	$2	03/31/2024
UBS Group AG	652	$2	12/31/2023
ALTO	652	$2	12/31/2023
Institutional & Family Asset Management LLC	200	$1	12/31/2023
ALTO	200	$1	12/31/2023
Allworth Financial LP	6	$0	03/31/2024
ALTO	6	$0	03/31/2024
Sunbelt Securities Inc.	2	$0	03/31/2024
ALTO	2	$0	03/31/2024
JPMorgan Chase & Co.	2	$0	12/31/2023
ALTO	2	$0	12/31/2023
Resources Management Corp CT ADV	3	$0	12/31/2023
ALTO	3	$0	12/31/2023
Proequities Inc.		$0	12/31/2023
Put	0	$0	12/31/2023
ALTO	0	$0	12/31/2023
Call	0	$0	12/31/2023
Nisa Investment Advisors LLC	140	$0	12/31/2023
ALTO	140	$0	12/31/2023
Hollencrest Capital Management	1	$0	12/31/2023
ALTO	1	$0	12/31/2023
FinTrust Capital Advisors LLC	1	$0	12/31/2023
ALTO	1	$0	12/31/2023
GWM Advisors LLC	1	$0	12/31/2023
ALTO	1	$0	12/31/2023

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

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