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Position history for PRIMECAP MANAGEMENT CO/CA/PRIMECAP MANAGEMENT CO/CA/'s holdings in ILLUMINA INC

PRIMECAP MANAGEMENT CO/CA/ holds 2.1M shares of ILMN (ILLUMINA INC), worth $254.8M as of 2026-Q1. The position was increased (+3.9% shares). ILMN represents 0.2% of PRIMECAP MANAGEMENT CO/CA/'s portfolio.

Current Value

$254.8M

Current Shares

2.1M

Total Value Change

+$1.3M

Total Shares Change

-361,461

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Increased
2.1M
+3.9%
$254.8M0.2%$129.56
38
2025-Q4
Increased
2M
+5.5%
$261M0.2%$132.75
39
2025-Q3
Decreased
1.9M
-3.7%
$179M0.1%$91.87
0
2025-Q2
Decreased
2M
-17.4%
$186.9M0.1%$94.79
0
2025-Q1
Decreased
2.4M
-3.5%
$188.1M0.2%$80.00
0
2024-Q4
Decreased
2.5M
-2.4%
$328.2M0.3%$133.57
0
2024-Q3
Increased
2.5M
+3.6%
$328.2M0.2%$130.12
38
2024-Q2
Increased
2.4M
+462.5%
$253.5M0.2%$104.38
59

Other major holders of ILMN: BAILLIE GIFFORD & CO

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