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ALNY
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Position history for AMERICAN CENTURY COMPANIES INC's holdings in ALNYLAM PHARMACEUTICALS INC

AMERICAN CENTURY COMPANIES INC holds 1.8M shares of ALNY (ALNYLAM PHARMACEUTICALS INC), worth $596.3M as of 2026-Q1. The position was increased (+21.4% shares). ALNY represents 0.3% of AMERICAN CENTURY COMPANIES INC's portfolio.

Current Value

$596.3M

Current Shares

1.8M

Total Value Change

+$267.3M

Total Shares Change

+448,194

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Increased
1.8M
+21.4%
$596.3M0.3%$318.65
45
2025-Q4
Decreased
1.5M
-9.5%
$590.6M0.3%$397.25
0
2025-Q3
Decreased
1.6M
-8.5%
$748.5M0.4%$447.49
0
2025-Q2
Increased
1.8M
+1.9%
$585M0.3%$322.83
38
2025-Q1
Increased
1.8M
+9.8%
$475.4M0.3%$268.46
41
2024-Q4
Increased
1.6M
+0.7%
$377.4M0.2%$236.01
37
2024-Q3
Increased
1.6M
+17.6%
$438M0.3%$274.91
44
2024-Q2
Decreased
1.4M
-1.4%
$329.1M0.2%$243.00
0

Other major holders of ALNY: FMR LLC, Capital World Investors, VANGUARD GROUP INC

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