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BLAIR WILLIAM & CO/IL

Position in AMG — Affiliated Managers Group, Inc.

CIK 902367 CHICAGO, IL

Position in AMG

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$3,988,720
+$700,694 QoQ
Shares Held
11,787
-0.8% QoQ
Ownership
0.046%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#142
of 562 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 91% Shared 0% None 9%

Common Shares in AMG Over Time

Shares Held

Position Value (USD)

Position in Asset Management

Financial Services · as of Jun 30, 2026

BLAIR WILLIAM & CO/IL holds $289,212,861 across 46 Asset Management names. AMG ranks #11 (1.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMG

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,988,720 11,787
2026-03-31 $3,288,026 11,883
2025-12-31 $3,091,514 10,724
2025-09-30 $2,559,784 10,736
2025-06-30 $2,141,841 10,885
2025-03-31 $2,058,199 12,249
2024-12-31 $2,302,069 12,449
2024-09-30 $2,221,255 12,493
2024-06-30 $2,016,148 12,905
2024-03-31 $2,164,382 12,924
2023-12-31 $1,946,504 12,855
2023-09-30 $1,717,881 13,180
2023-06-30 $1,986,192 13,251
2023-03-31 $1,979,210 13,897
2022-12-31 $2,203,127 13,906
2022-09-30 $1,614,666 14,436
2022-06-30 $1,683,237 14,436
2022-03-31 $2,076,193 14,730
2021-12-31 $2,468,472 15,005
2021-09-30 $2,266,803 15,003
2021-06-30 $2,317,776 15,030
2021-03-31 $2,854,669 19,155
2020-12-31 $1,951,928 19,193
2020-09-30 $1,363,497 19,940
2020-06-30 $6,042,789 81,046
2020-03-31 $4,853,205 82,063