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MGNI

15 quarters

Position history for American Century Companies Inc.American Century Companies Inc.'s holdings in Magnite, Inc.

Yes. American Century Companies holds 4,622,736 shares of MGNI (Magnite), worth $87.7M, as of its Q2 2026 13F filing. It reduced the position by 4,080 shares (-0.1%) from Q1 2026. American Century Companies has held MGNI since Q4 2022, across 15 quarterly 13F filings.

Current Value

$87.7M

Current Shares

4.6M

Total Value Change

+$87.6M

Total Shares Change

+4.6M

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Decreased
4.6M
-0.1%
$87.7M0.0%$18.98
0
2026-Q1
Decreased
4.6M
-12.5%
$55M0.0%$11.88
0
2025-Q4
Increased
5.3M
+15.1%
$85.8M0.0%$16.23
34
2025-Q3
Decreased
4.6M
-4.9%
$100.1M0.1%$21.78
0
2025-Q2
Increased
4.8M
+63.1%
$116.5M0.1%$24.12
44
2025-Q1
Increased
3M
+855.2%
$33.8M0.0%$11.41
47
2024-Q4
Increased
309,976
+6.0%
$4.9M0.0%$15.92
29
2024-Q3
Increased
292,431
+18.2%
$4.1M0.0%$13.85
31
2024-Q2
Increased
247,349
+15.0%
$3.3M0.0%$13.29
30
2024-Q1
Increased
215,015
+31.2%
$2.3M0.0%$10.75
33
2023-Q4
Increased
163,878
+73.3%
$1.5M0.0%$9.34
38
2023-Q3
Increased
94,554
+35.1%
$712,9370.0%$7.54
32
2023-Q2
Increased
69,995
+86.3%
$955,4320.0%$13.65
39
2023-Q1
Increased
37,567
+168.1%
$347,8700.0%$9.26
38
2022-Q4
New
14,013
-
$148,3980.0%$10.59
31

Other major holders of MGNI: FMR LLC, Vanguard Group Inc., Capital Research Global Investors

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