PRIMECAP MANAGEMENT CO/CA/

CIK

763212

City

PASADENA

State / Country

Stock

XNCR — Xencor Inc

Top Portfolio Positions

318 positions · $125,609,644,506 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
LLY	ELI LILLY & Co Healthcare	9,223,432	$8,483,436,050	6.75%
MU	Micron Technology Inc Technology	21,874,204	$7,389,981,079	5.88%
GOOGL	Alphabet Inc. Communication Services	14,987,459	$4,309,793,710	3.43%
AZN	Astrazeneca PLC Healthcare	18,213,708	$3,592,107,491	2.86%
KLAC	Kla Corp Technology	2,437,647	$3,589,215,819	2.86%
INTC	Intel Corp Technology	75,761,968	$3,343,375,647	2.66%
AMGN	Amgen Inc Healthcare	8,874,129	$3,122,362,288	2.49%
NVDA	Nvidia Corp Technology	17,188,230	$2,997,627,312	2.39%
FDX	Fedex Corp Industrials	8,303,010	$2,957,366,101	2.35%
BIIB	Biogen Inc. Healthcare	14,757,607	$2,705,512,091	2.15%

Portfolio Trend

25 quarters · across all stocks

Holdings in XNCR

Compact Export CSV

Shares Held

Position Value (USD)

26 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$124,676,545	10,338,022	+1.2%	Shares	Sole	2026-05-11
2025-12-31	$156,442,509	10,218,322	-4.3%	Shares	Sole	2026-02-11
2025-09-30	$125,218,008	10,675,022	+1.4%	Shares	Sole	2025-11-12
2025-06-30	$82,744,750	10,527,322	0.0%	Shares	Sole	2025-08-14
2025-06-30	$82,744,750	10,527,322	+7.9%	Shares	Sole	2025-08-11
2025-03-31	$103,857,167	9,761,012	+8.6%	Shares	Sole	2025-05-09
2024-12-31	$206,462,247	8,984,432	-1.7%	Shares	Sole	2025-02-10
2024-09-30	$183,748,991	9,137,195	+0.2%	Shares	Sole	2024-11-08
2024-06-30	$172,569,703	9,116,202	+0.3%	Shares	Sole	2024-08-09
2024-03-31	$201,177,345	9,090,707	+2.1%	Shares	Sole	2024-05-14
2023-12-31	$188,981,116	8,901,607	+8.8%	Shares	Sole	2024-02-09
2023-09-30	$164,911,750	8,184,206	+5.6%	Shares	Sole	2023-11-13
2023-06-30	$193,538,774	7,750,852	+2.5%	Shares	Sole	2023-08-11
2023-03-31	$210,927,021	7,562,819	+21.6%	Shares	Sole	2023-05-15
2022-12-31	$161,888,154	6,216,903	+9.3%	Shares	Sole	2023-02-13
2022-09-30	$147,832,201	5,690,231	+18.7%	Shares	Sole	2022-11-14
2022-06-30	$131,240,573	4,795,052	-3.0%	Shares	Sole	2022-08-11
2022-03-31	$131,842,208	4,941,612	-0.9%	Shares	Sole	2022-05-11
2021-12-31	$200,111,418	4,987,822	-5.5%	Shares	Sole	2022-02-11
2021-09-30	$172,308,673	5,275,832	-0.4%	Shares	Sole	2021-11-12
2021-06-30	$182,682,217	5,296,672	-0.3%	Shares	Sole	2021-08-10
2021-03-31	$228,765,809	5,312,722	-0.5%	Shares	Sole	2021-05-14
2020-12-31	$233,002,611	5,340,422	-1.3%	Shares	Sole	2021-02-08
2020-09-30	$209,781,440	5,408,132	-2.2%	Shares	Sole	2020-11-13
2020-06-30	$179,080,164	5,528,872	-3.0%	Shares	Sole	2020-08-13
2020-03-31	$170,327,115	5,700,372	—	Shares	Sole	2020-05-14
No 13F history on record for this holder in this stock.