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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
ONB
301
Old National Bancorp
Indiana
$257K -$2.2K -10 -0.9%
PAM
302
Panagora Asset Management
Massachusetts
$255K – – –
ECM
303
EMC Capital Management
Texas
$253K – – –
Commonwealth Equity Services
304
Commonwealth Equity Services
Massachusetts
$252K -$5.07K -23 -2%
Marshall Wace
305
Marshall Wace
United Kingdom
$251K -$1.7M -7,696 -88%
AC
306
AlphaCore Capital
California
$250K +$176K +799 +322%
ECM
307
Evergreen Capital Management
Washington
$248K +$229K +1,040 New
CIBC Asset Management
308
CIBC Asset Management
Ontario, Canada
$244K – – –
WA
309
Waverly Advisors
Alabama
$242K -$8.6K -39 -4%
SCM
310
Shelton Capital Management
Colorado
$240K -$11.2K -51 -5%
BFG
311
Birch Financial Group
New Hampshire
$238K -$19.6K -89 -8%
SC
312
Syon Capital
California
$236K +$218K +989 New
PA
313
Parallel Advisors
California
$236K -$2.2K -10 -1%
CPC
314
Cookson Peirce & Co
Pennsylvania
$234K +$216K +981 New
AI
315
Atria Investments
North Carolina
$233K +$215K +977 New
CPIG
316
Chicago Partners Investment Group
Illinois
$232K +$212K +964 New
CAPTRUST Financial Advisors
317
CAPTRUST Financial Advisors
North Carolina
$231K -$182K -824 -46%
CFG
318
Cooper Financial Group
California
$227K +$210K +951 New
TCA
319
Transcend Capital Advisors
New Jersey
$226K +$209K +949 New
KFSC
320
Keystone Financial Services (Colorado)
Colorado
$225K +$208K +942 New
CCA
321
Childress Capital Advisors
Texas
$221K +$204K +926 New
AGP
322
Autumn Glory Partners
Texas
$221K +$204K +925 New
FC
323
Farringdon Capital
United Kingdom
$214K +$197K +896 New
MPM
324
MBB Public Markets
Illinois
$213K +$197K +894 New
TPCW
325
TD Private Client Wealth
New York
$212K -$11K -50 -5%
11 12
13
14 15

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.