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Showing 8 of 31 quarters

Position history for PRIMECAP Management Co.PRIMECAP Management Co.'s holdings in Axcelis Technologies, Inc.

Yes. PRIMECAP Management holds 610,451 shares of ACLS (Axcelis Technologies), worth $115.6M, as of its Q2 2026 13F filing. It reduced the position by 48,201 shares (-7.3%) from Q1 2026. PRIMECAP Management has held ACLS in every 13F on record since Q4 2018, 31 quarterly filings. ACLS is 0.1% of PRIMECAP Management's reported 13F portfolio.

Current Value

$115.6M

Current Shares

610,451

Total Value Change

+$13.5M

Total Shares Change

-363,985

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Decreased
610,451
-7.3%
$115.6M0.1%$189.45
0
2026-Q1
Decreased
658,652
-0.9%
$61.3M0.0%$93.08
0
2025-Q4
Decreased
664,942
-20.2%
$53.4M0.0%$80.34
0
2025-Q3
Decreased
833,676
-2.2%
$81.4M0.1%$97.64
0
2025-Q2
Increased
852,296
+2.1%
$59.4M0.0%$69.69
30
2025-Q1
Decreased
835,066
-8.9%
$41.5M0.0%$49.67
0
2024-Q4
Decreased
916,426
-6.0%
$64M0.0%$69.87
0
2024-Q3
Decreased
974,436
-1.6%
$102.2M0.1%$104.85
0

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