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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
IP
276
Investment Partners
Ohio
$329K -$22K -100 -7%
MSRPS
277
Maryland State Retirement & Pension System
Maryland
$328K -$42.1K -191 -12%
DWT
278
Dorsey & Whitney Trust
South Dakota
$328K -$9.92K -45 -3%
PCM
279
Polymer Capital Management
New York
$326K -$170K -770 -36%
PD
280
Point72 (DIFC)
United Arab Emirates
$324K +$194K +882 +185%
SLAM
281
Swiss Life Asset Management
$321K +$297K +1,346 New
GI
282
GAMMA Investing
California
$318K +$17.9K +81 +6%
CIM
283
Cambria Investment Management
California
$316K -$12.3M -55,906 -98%
TWM
284
Tolleson Wealth Management
Texas
$314K – – –
M&T Bank
285
M&T Bank
New York
$305K -$79.3K -360 -22%
MNA
286
Manning & Napier Advisors
New York
$296K +$273K +1,240 New
SSWM
287
Sheets Smith Wealth Management
North Carolina
$293K – – –
QC
288
Quent Capital
New York
$289K +$220 +1 +0.1%
MML Investors Services
289
MML Investors Services
Massachusetts
$289K +$26.4K +120 +11%
ProShare Advisors
290
ProShare Advisors
Maryland
$288K -$11.5K -52 -4%
UCFA
291
United Capital Financial Advisors
Texas
$283K -$882 -4 -0.3%
ACGA
292
Atlanta Consulting Group Advisors
Georgia
$274K – – –
Bessemer Group
293
Bessemer Group
New Jersey
$273K -$38.6K -175 -13%
DekaBank Deutsche Girozentrale
294
DekaBank Deutsche Girozentrale
Germany
$271K – – –
CCA
295
Cadent Capital Advisors
Oklahoma
$270K -$11K -50 -4%
CL
296
Choreo LLC
Illinois
$267K -$33.5K -152 -12%
BC
297
Bayforest Capital
United Kingdom
$267K +$247K +1,121 New
MCM
298
MAI Capital Management
Ohio
$264K -$1.1K -5 -0.4%
BONH
299
Bank of New Hampshire
New Hampshire
$263K – – –
CCA
300
Checchi Capital Advisers
California
$258K +$5.51K +25 +2%
10 11
12
13 14

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.