There is a long list of 117 institutional holders of ALTG 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 ALTG by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-ALTG table below, the initial column indicates the name of each top institutional holder of ALTG, with a link to that fund's top holdings. The next columns indicate the amount of ALTG stock held by each of the institutional holders of ALTG, followed by the ALTG 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
Punch & Associates Investment Management Inc.		$10,156,977	12/31/2023
Call	820,277	$10,146,830	12/31/2023
ALTG	820,277	$10,147	12/31/2023
B. Riley Financial Inc.	3,609,763	$44,653	12/31/2023
ALTG	3,609,763	$44,653	12/31/2023
Voss Capital LLC	3,245,000	$40,141	12/31/2023
ALTG	3,245,000	$40,141	12/31/2023
BlackRock Inc.	3,015,749	$37,305	12/31/2023
ALTG	3,015,749	$37,305	12/31/2023
Mill Road Capital Management LLC	2,361,002	$29,206	12/31/2023
ALTG	2,361,002	$29,206	12/31/2023
Vanguard Group Inc.	1,241,192	$15,354	12/31/2023
ALTG	1,241,192	$15,354	12/31/2023
Granahan Investment Management Inc. MA	1,030,942	$12,753	12/31/2023
ALTG	1,030,942	$12,753	12/31/2023
Wells Fargo & Company MN	648,621	$8,023	12/31/2023
ALTG	648,621	$8,023	12/31/2023
Dimensional Fund Advisors LP	573,359	$7,093	12/31/2023
ALTG	573,359	$7,093	12/31/2023
Loomis Sayles & Co. L P	515,377	$6,375	12/31/2023
ALTG	515,377	$6,375	12/31/2023
Geode Capital Management LLC	498,112	$6,162	12/31/2023
ALTG	498,112	$6,162	12/31/2023
State Street Corp	459,091	$5,679	12/31/2023
ALTG	459,091	$5,679	12/31/2023
Morgan Stanley	404,456	$5,003	12/31/2023
ALTG	404,456	$5,003	12/31/2023
CIBC Private Wealth Group LLC	347,746	$4,302	12/31/2023
ALTG	347,746	$4,302	12/31/2023
Nantahala Capital Management LLC	302,509	$3,742	12/31/2023
ALTG	302,509	$3,742	12/31/2023
Nuveen Asset Management LLC	268,405	$3,320	12/31/2023
ALTG	268,405	$3,320	12/31/2023
Citadel Advisors LLC		$3,210	12/31/2023
ALTG	280,793	$3,473	12/31/2023
Put	46,100	$570	12/31/2023
Call	24,800	$307	12/31/2023
Register Financial Advisors LLC	232,631	$3,013	03/31/2024
ALTG	232,631	$3,013	03/31/2024
Foundry Partners LLC	236,400	$2,924	12/31/2023
ALTG	236,400	$2,924	12/31/2023
ABS Direct Equity Fund LLC	220,000	$2,721	12/31/2023
ALTG	220,000	$2,721	12/31/2023
Bank of New York Mellon Corp	207,671	$2,689	03/31/2024
ALTG	207,671	$2,689	03/31/2024
Northern Trust Corp	215,331	$2,664	12/31/2023
ALTG	215,331	$2,664	12/31/2023
Essex Investment Management Co. LLC	164,314	$2,033	12/31/2023
ALTG	164,314	$2,033	12/31/2023
Ancora Advisors LLC	160,259	$1,982	12/31/2023
ALTG	160,259	$1,982	12/31/2023
Rock Creek Group LP	150,000	$1,856	12/31/2023
ALTG	150,000	$1,856	12/31/2023
Russell Investments Group Ltd.	138,167	$1,709	12/31/2023
ALTG	138,167	$1,709	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	125,962	$1,558	12/31/2023
ALTG	125,962	$1,558	12/31/2023
Renaissance Technologies LLC	116,400	$1,440	12/31/2023
ALTG	116,400	$1,440	12/31/2023
Spouting Rock Asset Management LLC	112,445	$1,391	12/31/2023
ALTG	112,445	$1,391	12/31/2023
Bank of Montreal Can	103,725	$1,332	12/31/2023
ALTG	103,725	$1,332	12/31/2023
New York State Common Retirement Fund	90,839	$1,124	12/31/2023
ALTG	90,839	$1,124	12/31/2023
Tudor Investment Corp Et Al	82,153	$1,016	12/31/2023
ALTG	82,153	$1,016	12/31/2023
Goldman Sachs Group Inc.	76,111	$941	12/31/2023
ALTG	76,111	$941	12/31/2023
Ameriprise Financial Inc.	75,532	$934	12/31/2023
ALTG	75,532	$934	12/31/2023
Quantum Private Wealth LLC	74,580	$923	12/31/2023
ALTG	74,580	$923	12/31/2023
Two Sigma Investments LP	74,379	$920	12/31/2023
ALTG	74,379	$920	12/31/2023
Squarepoint Ops LLC	72,515	$897	12/31/2023
ALTG	72,515	$897	12/31/2023
Contrarian Capital Management L.L.C.	72,000	$891	12/31/2023
ALTG	72,000	$891	12/31/2023
Legato Capital Management LLC	65,791	$852	03/31/2024
ALTG	65,791	$852	03/31/2024
B. Riley Asset Management LLC	70,000	$813	12/31/2023
ALTG	70,000	$813	12/31/2023
Marshall Wace LLP	63,766	$789	12/31/2023
ALTG	63,766	$789	12/31/2023
Charles Schwab Investment Management Inc.	63,429	$785	12/31/2023
ALTG	63,429	$785	12/31/2023
Assenagon Asset Management S.A.	59,446	$770	03/31/2024
ALTG	59,446	$770	03/31/2024
Millrace Asset Group Inc.	58,005	$718	12/31/2023
ALTG	58,005	$718	12/31/2023
State of Wisconsin Investment Board	44,640	$552	12/31/2023
ALTG	44,640	$552	12/31/2023
Two Sigma Advisers LP	43,900	$543	12/31/2023
ALTG	43,900	$543	12/31/2023
Millennium Management LLC	40,780	$504	12/31/2023
ALTG	40,780	$504	12/31/2023
GSA Capital Partners LLP	40,195	$497	12/31/2023
ALTG	40,195	$497	12/31/2023
Nebula Research & Development LLC	39,694	$491	12/31/2023
ALTG	39,694	$491	12/31/2023
UBS Group AG	39,503	$489	12/31/2023
ALTG	39,503	$489	12/31/2023