Consolidated Statements of Loss (unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue
Collaborations, milestones, and royalties	$ 10,710,000	$ 59,164,000	$ 40,475,000	$ 123,649,000
Operating expenses
Research and development	58,226,000	64,941,000	176,630,000	190,553,000
General and administrative	14,767,000	12,493,000	46,300,000	38,107,000
Total operating expenses	72,993,000	77,434,000	222,930,000	228,660,000
Loss from operations	(62,283,000)	(18,270,000)	(182,455,000)	(105,011,000)
Other income (expense)
Interest income	7,537,000	5,023,000	23,766,000	11,693,000
Interest expense	(795,000)	(7,000)	(2,716,000)	(21,000)
Other (expense) income, net	(10,000)	8,000	(14,000)	(14,000)
Impairment on equity securities	0	0	(20,430,000)	0
Gain (loss) on equity securities, net	9,254,000	(11,023,000)	(448,000)	(13,633,000)
Total other income (expense), net	15,986,000	(5,999,000)	158,000	(1,975,000)
Loss before income tax expense	(46,297,000)	(24,269,000)	(182,297,000)	(106,986,000)
Income tax expense	0	0	117,000	0
Net loss	(46,297,000)	(24,269,000)	(182,414,000)	(106,986,000)
Net loss attributable to non-controlling interest	(1,154,000)	0	(3,275,000)	0
Net loss attributable to Xencor, Inc.	$ (45,143,000)	$ (24,269,000)	$ (179,139,000)	$ (106,986,000)
Basic net loss per common share attributable to Xencor, Inc. (in dollars per share)	$ (0.71)	$ (0.40)	$ (2.87)	$ (1.77)
Diluted net loss per common share attributable to Xencor, Inc. (in dollars per share)	$ (0.71)	$ (0.40)	$ (2.87)	$ (1.77)
Weighted average shares used to compute net income (loss) per share attributable to common stockholders:
Basic weighted average common shares outstanding (in shares)	64,022,547	60,621,534	62,310,045	60,387,163
Diluted weighted average common shares outstanding (in shares)	64,022,547	60,621,534	62,310,045	60,387,163