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Affiliated Managers Group
AMG

450 hedge funds and large institutions have $6.32B invested in Affiliated Managers Group in 2025 Q3 according to their latest regulatory filings, with 59 funds opening new positions, 141 increasing their positions, 163 reducing their positions, and 36 closing their positions.

New
Increased
Maintained
Reduced
Closed

64% more first-time investments, than exits

New positions opened: 59 | Existing positions closed: 36

32% more call options, than puts

Call options by funds: $4.08M | Put options by funds: $3.1M

20% more capital invested

Capital invested by funds: $5.28B → $6.32B (+$1.03B)

17% more funds holding in top 10

Funds holding in top 10: 6 → 7 (+1)

4% more funds holding

Funds holding: 433 → 450 (+17)

1.24% less ownership

Funds ownership: 94.46% → 93.22% (-1.2%)

13% less repeat investments, than reductions

Existing positions increased: 141 | Existing positions reduced: 163

Holders
450
Holders Change
+17
Holders Change %
+3.93%
% of All Funds
5.91%
Holding in Top 10
7
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+16.67%
% of All Funds
0.09%
New
59
Increased
141
Reduced
163
Closed
36
Calls
$4.08M
Puts
$3.1M
Net Calls
+$978K
Net Calls Change
-$3.31M

Top Buyers

1
Alyeska Investment Group
Alyeska Investment Group
Illinois
+$65M
2
UBS Group
UBS Group
Switzerland
+$38.1M
3
Holocene Advisors
Holocene Advisors
New York
+$33.7M
4
Caisse de Depot et Placement du Quebec (CDPQ)
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
+$21.7M
5
Raymond James Financial
Raymond James Financial
Florida
+$16.6M

Top Sellers

1
Millennium Management
Millennium Management
New York
-$122M
2
CCP
Clarkston Capital Partners
Michigan
-$44.7M
3
BA
Bridgewater Associates
Connecticut
-$21.1M
4
AI
Ariel Investments
Illinois
-$20.1M
5
Morgan Stanley
Morgan Stanley
New York
-$16.7M
Name Holding Trade Value Shares
Change 		Change in
Stake
MFG
326
Merit Financial Group
Georgia
$208K +$192K +873 New
KBC Group
327
KBC Group
Belgium
$208K – – –
LAM
328
Lingohr Asset Management
Germany
$201K +$186K +843 New
UFF
329
USA Financial Formulas
Michigan
$178K +$165K +748 New
Northwestern Mutual Wealth Management
330
Northwestern Mutual Wealth Management
Wisconsin
$161K +$661 +3 +0.4%
SO
331
STRS Ohio
Ohio
$157K -$2.18M -9,887 -94%
A
332
AlphaQuest
New York
$153K +$142K +643 New
CI Investments Inc
333
CI Investments Inc
Ontario, Canada
$150K -$11K -50 -7%
S
334
SignatureFD
Georgia
$133K +$1.32K +6 +1%
CFB
335
Cullen/Frost Bankers
Texas
$129K -$13.4K -61 -10%
AGWCA
336
Annis Gardner Whiting Capital Advisors
Florida
$128K +$119K +538 New
SAM
337
Shell Asset Management
Netherlands
$110K -$162K -737 -62%
AF
338
Allworth Financial
California
$104K +$7.49K +34 +8%
SOW
339
State of Wyoming
Wyoming
$88.7K +$220 +1 +0.3%
UB
340
UMB Bank
Missouri
$87.3K -$6.39K -29 -7%
ST
341
Smithfield Trust
Pennsylvania
$86K -$11K -50 -12%
VCM
342
Versant Capital Management
Arizona
$81.5K – – –
RF
343
Rossby Financial
Florida
$79.7K -$2.87K -13 -4%
SPIA
344
Steward Partners Investment Advisory
New York
$79K +$34.4K +156 +89%
TC
345
Truvestments Capital
Florida
$78.7K – – –
Fifth Third Bancorp
346
Fifth Third Bancorp
Ohio
$77.7K +$220 +1 +0.3%
Nomura Asset Management
347
Nomura Asset Management
Japan
$76.3K – – –
PS
348
Principal Securities
Iowa
$75K +$46.9K +213 +209%
BNP Paribas Asset Management
349
BNP Paribas Asset Management
France
$73K +$882 +4 +1%
National Bank of Canada
350
National Bank of Canada
Quebec, Canada
$72.2K -$663K -3,008 -91%
12 13
14
15 16

AMG Hedge Fund Activity: Q3 2025 in Review

450 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Affiliated Managers Group (AMG) for Q3 2025, worth a combined $6.32B — up 20% from $5.28B a quarter earlier.

Buyers outnumbered sellers: 59 funds opened new AMG positions and 36 closed out — a net gain of 23 holders — while 141 added to existing stakes and 163 trimmed.

The largest buyer was Alyeska Investment Group, opening a new position worth an estimated $65M. The largest seller was Millennium Management, cutting an estimated $122M.

  • 450 institutional investors held Affiliated Managers Group (AMG) as of Q3 2025, up from 433 in Q2 2025.
  • Funds reported $6.32B of Affiliated Managers Group stock for Q3 2025, up 20% quarter-over-quarter.
  • 59 funds opened new Affiliated Managers Group positions in Q3 2025 and 36 closed out, a net change of +23 holders.
  • The largest Affiliated Managers Group buyer in Q3 2025 was Alyeska Investment Group, an estimated $65M added.
  • The largest Affiliated Managers Group seller in Q3 2025 was Millennium Management, an estimated $122M sold.

Based on aggregated 13F filings for Q3 2025.