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Type	Result	AUM ($BB)

B Riley Principal Merger Corp
Ticker	ALTG
CIK #	0001759824
CUSIP	02128L106
Sector	Real Estate & Construction
Industry	Blank Checks
Phone	2124573300
Address	299 Park Avenue, 7th Floor New York, NY 10171
Source	[EDGAR]

Market Cap, 13F ($)

Shares Owned of Total
Firm	Period	DFND	Voting	Shares
B. Riley Financial, Inc.	[2023-03-31]	DFND	6,000,763.0	6,000,763.0
BlackRock Inc.	[2023-03-31]	SOLE	2,048,662.0	2,076,650.0
Voss Capital LLC	[2023-03-31]	SOLE	1,773,267.0	1,773,267.0
Mill Road Capital Management LLC	[2023-03-31]	OTR	0.0	1,452,269.0
Vanguard Group Inc	[2023-03-31]	SOLE	0.0	1,027,487.0
Punch & Associates Investment Management Inc	[2023-03-31]	SOLE	858,561.0	858,561.0
Granahan Investment Management LLC	[2023-03-31]	SOLE	668,394.0	804,969.0
Nantahala Capital Management LLC	[2023-03-31]	SOLE	627,107.0	627,107.0
Federated Hermes Inc	[2023-03-31]	DFND	559,616.0	559,616.0
Loomis Sayles & Co L P	[2023-03-31]	DFND	494,532.0	531,132.0
Geode Capital Management LLC	[2023-03-31]	DFND	412,141.0	412,141.0
Voss Capital LLC	[2023-03-31]	OTR	0.0	404,031.0
State Street Corp	[2023-03-31]	DFND	338,094.0	360,971.0
Silvercrest Asset Management Group LLC	[2023-03-31]	SOLE	170,372.0	312,812.0
Dimensional Fund Advisors LP	[2023-03-31]	SOLE	280,007.0	311,779.0
Rock Creek Group, LP	[2023-03-31]	SOLE	279,031.0	279,031.0
Acadian Asset Management LLC	[2023-03-31]	DFND	267,541.0	267,541.0
Morgan Stanley	[2023-03-31]	DFND	244,186.0	246,263.0
Nuveen Asset Management LLC	[2023-03-31]	DFND	243,386.0	243,386.0
Portolan Capital Management LLC	[2023-03-31]	SOLE	235,743.0	235,743.0
Bank of New York Mellon Corp	[2023-03-31]	DFND	226,888.0	234,679.0
Foundry Partners LLC	[2023-03-31]	SOLE	82,152.0	233,371.0
Susquehanna International Group LLP	[2023-03-31]	DFND	88,934.0	210,234.0
Assenagon Asset Management S.A.	[2023-03-31]	SOLE	185,627.0	185,627.0
Goldman Sachs Group Inc	[2023-03-31]	DFND	181,687.0	181,707.0
Northern Trust Corp	[2023-03-31]	DFND	1,651.0	181,491.0
Citadel Advisors LLC	[2023-03-31]	DFND	177,420.0	177,420.0
Invesco Ltd.	[2023-03-31]	DFND	0.0	162,794.0
Essex Investment Management Co LLC	[2023-03-31]	SOLE	87,539.0	158,290.0
Two Sigma Advisers LP	[2023-03-31]	SOLE	117,700.0	132,300.0
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