PRIMECAP MANAGEMENT CO/CA/

13D and 13G Filings

Investors who own more than 5% of a class must file a Schedule 13D or 13G. The latest filing for each security since 12/18/2024, newest first.

Issuer % of Class Filed
Southwest Airlines Co 13G/A
LUV · 844741108
10.0% 10/5/2026
Event 9/30/2026
Amentum Holdings, Inc. 13G
AMTM · 023939101
5.0% 8/6/2026
Event 6/30/2026
GRAIL, Inc. 13G/A
GRAL · 384747101
5.1% 8/6/2026
Event 6/30/2026
Booz Alllen Hamilton Holding Corporation 13G
BAH · 099502106
5.3% 8/6/2026
Event 6/30/2026
Flex Ltd. 13G/A
FLEX · Y2573F102
6.4% 8/6/2026
Event 6/30/2026
MarketAxess Holdings Inc. 13G/A
MKTX · 57060D108
9.9% 8/6/2026
Event 6/30/2026
American Airlines Group Inc. 13G/A
AAL · 02376R102
10.5% 6/5/2026
Event 5/31/2026
Xometry, Inc. 13G/A
XMTR · 98423F109
12.9% 5/13/2026
Event 3/31/2026
Whirlpool Corporation 13G/A
WHR · 963320106
5.8% 5/13/2026
Event 3/31/2026
Elanco Animal Health Incorporated 13G/A
ELAN · 28414H103
9.2% 5/13/2026
Event 3/31/2026
Rhythm Pharmaceuticals, Inc. 13G/A
RYTM · 76243J105
5.2% 2/12/2026
Event 12/31/2025
LivaNova PLC 13G/A
LIVN · G5509L101
7.7% 2/12/2026
Event 12/31/2025
United Airlines Holdings, Inc. 13G/A
UAL · 910047109
4.9% 2/11/2026
Event 12/31/2025
Nextpower Inc. 13G/A
NXT · 65290E101
4.7% 2/11/2026
Event 12/31/2025
Glaukos Corporation 13G
GKOS · 377322102
5.9% 2/11/2026
Event 12/31/2025
NetApp, Inc. 13G/A
NTAP · 64110D104
4.8% 11/14/2025
Event 9/30/2025
Pulmonx Corporation 13G/A
LUNG · 745848101
12.2% 11/13/2025
Event 9/30/2025
Biogen Inc. 13G/A
BIIB · 09062X103
10.2% 11/13/2025
Event 9/30/2025
Xencor, Inc. 13G/A
XNCR · 98401F105
14.8% 8/14/2025
Event 6/30/2025
Immunocore Holdings plc - ADR 13G/A
IMCR · 45258D105
7.5% 8/14/2025
Event 6/30/2025
Transocean Ltd. 13G/A
RIG · H8817H100
1.5% 8/14/2025
Event 6/30/2025
Mattel, Inc. 13G/A
MAT · 577081102
10.3% 8/14/2025
Event 6/30/2025
BioMarin Pharmaceutical Inc. 13G/A
BMRN · 09061G101
8.2% 8/14/2025
Event 6/30/2025
Aecom 13G/A
ACM · 00766T100
7.2% 8/14/2025
Event 6/30/2025
Wolfspeed, Inc. 13G/A
WOLF · 977852102
4.3% 5/13/2025
Event 3/31/2025
Raymond James Financial, Inc. 13G/A
RJF · 754730109
4.7% 5/13/2025
Event 3/31/2025
New Fortress Energy Inc. 13G/A
NFE · 644393100
4.8% 5/13/2025
Event 3/31/2025
FedEx Corporation 13G/A
FDX · 31428X106
4.98% 5/13/2025
Event 3/31/2025
FibroGen, Inc. 13G/A
FGEN · 31572Q808
4.6% 2/13/2025
Event 12/31/2024