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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
NMERB
176
New Mexico Educational Retirement Board
New Mexico
$1.55M – – –
CIA
177
Citadel Investment Advisory
Ohio
$1.53M -$3.75K -17 -0.3%
NMIMC
178
Northwestern Mutual Investment Management Company
Wisconsin
$1.51M -$3.09K -14 -0.2%
LPL Financial
179
LPL Financial
California
$1.48M +$610K +2,769 +80%
Carson Wealth (CWM LLC)
180
Carson Wealth (CWM LLC)
Nebraska
$1.43M -$109K -496 -8%
MAM
181
Martingale Asset Management
Massachusetts
$1.37M -$196K -890 -13%
OPERF
182
Oregon Public Employees Retirement Fund
Oregon
$1.36M -$33.1K -150 -3%
PCM
183
Penn Capital Management
Pennsylvania
$1.32M -$475K -2,156 -28%
Neuberger Berman Group
184
Neuberger Berman Group
New York
$1.32M -$12.8K -58 -1%
OIA
185
OneDigital Investment Advisors
Kansas
$1.29M -$19.2K -87 -2%
Lazard Asset Management
186
Lazard Asset Management
New York
$1.27M +$1.17M +5,319 +66,488%
AIP
187
Ameritas Investment Partners
Nebraska
$1.27M -$42.8K -194 -4%
LAM
188
L2 Asset Management
Massachusetts
$1.25M +$105K +478 +10%
RIM
189
Redwood Investment Management
Arizona
$1.2M -$426K -1,934 -28%
Two Sigma Advisers
190
Two Sigma Advisers
New York
$1.19M -$441K -2,000 -29%
Mariner
191
Mariner
Kansas
$1.17M +$24.5K +111 +2%
BNP Paribas Financial Markets
192
BNP Paribas Financial Markets
France
$1.17M -$127K -574 -10%
VT
193
Vise Technologies
New York
$1.16M -$60.6K -275 -5%
BTI
194
Blue Trust Inc
Georgia
$1.14M +$4.19K +19 +0.4%
Mackenzie Financial
195
Mackenzie Financial
Ontario, Canada
$1.14M +$209K +950 +25%
Ensign Peak Advisors
196
Ensign Peak Advisors
Utah
$1.09M -$1.18M -5,360 -54%
TCM
197
Traub Capital Management
Massachusetts
$1.09M -$44.1K -200 -4%
SG Americas Securities
198
SG Americas Securities
New York
$986K +$232K +1,051 +34%
WLG
199
Williamson Legacy Group
Indiana
$965K +$892K +4,047 New
PMAM
200
Picton Mahoney Asset Management
Ontario, Canada
$934K +$112K +509 +15%
6 7
8
9 10

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.