As of March 25, 2022 and December 31, 2021, collateral held for receivables from clients was $4,891 and $4,803, respectively, and collateral held for securities purchased under agreements to resell was $1,100 and $1,526, respectively. Given the nature of the agreements, the Partnership does not expect the fair value of collateral to fall below the value of the agreements frequently or for an extended period of time. Therefore, the expected credit loss was zero for each period. Additionally, partnership loan values remained below the value of capital allocated to partners, resulting in an expected credit loss of zero as of March 25, 2022 and December 31, 2021.

As of March 25, 2022, December 31, 2021 and December 31, 2020, $683, $695 and $563, respectively, of the receivable from clients balance and $313, $335 and $285, respectively, of the receivable from mutual funds, insurance companies and other balance related to revenue contracts with customers. The related fees are paid out of client accounts or third-party products consisting of cash and securities, and the collateral value of those accounts continues to exceed the amortized cost basis of these receivables, resulting in a remote risk of loss. The expected credit loss for receivables from contracts with customers was zero as of March 25, 2022 and December 31, 2021.

The Partnership derived 13% of its total revenue for both three-month periods ended March 25, 2022 and March 26, 2021, from one mutual fund company. The revenue generated from this company relates to business conducted with the Partnership's U.S. segment.

The following table shows the Partnership's disaggregated revenue information. See Note 8 for segment information.


	Three Months Ended March 25, 2022								Three Months Ended March 26, 2021
	U.S.			Canada		Total			U.S.		Canada		Total
Fee revenue:
Asset-based fee revenue:
Advisory programs fees	$	1,890		$	37	$	1,927		$	1,640	$	27	$	1,667
Service fees		379			29		408			366		25		391
Other asset-based fees		168			—		168			151		—		151
Total asset-based fee revenue		2,437			66		2,503			2,157		52		2,209
Account and activity fee revenue:
Shareholder accounting services fees		111			—		111			107		—		107
Other account and activity fee revenue		58			3		61			59		4		63
Total account and activity fee revenue		169			3		172			166		4		170
Total fee revenue		2,606			69		2,675			2,323		56		2,379
Trade revenue:
Commissions		366			12		378			419		14		433
Principal transactions		10			1		11			9		—		9
Total trade revenue		376			13		389			428		14		442
Total revenue from customers		2,982			82		3,064			2,751		70		2,821
Net interest and dividends and other revenue		(38	)		7		(31	)		28		4		32
Net revenue	$	2,944		$	89	$	3,033		$	2,779	$	74	$	2,853