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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
ANBT
351
American National Bank & Trust
Texas
$66K -$3.53K -16 -5%
PTC
352
Private Trust Company
Ohio
$65.3K -$5.95K -27 -9%
Jones Financial Companies
353
Jones Financial Companies
Missouri
$58.8K +$18.5K +84 +52%
EWA
354
EverSource Wealth Advisors
Alabama
$56.3K -$9.92K -45 -16%
HNB
355
Huntington National Bank
Ohio
$52.5K -$70.8K -321 -59%
BAMF
356
BI Asset Management Fondsmaeglerselskab
Denmark
$52K – – –
GRP
357
Global Retirement Partners
California
$51K +$43.6K +198 +1,238%
QL
358
Quarry LP
New York
$50.5K -$23.8K -108 -34%
WSFS
359
Wilmington Savings Fund Society
Delaware
$47.2K -$11.7K -53 -21%
WT
360
Whittier Trust
California
$46.2K – – –
MEG
361
Millstone Evans Group
Colorado
$42K +$11.5K +52 +42%
W
362
WealthCollab
Washington
$38.9K – – –
HFS
363
Hantz Financial Services
Michigan
$34K +$20.5K +93 +190%
MAM
364
Meeder Asset Management
Ohio
$33.9K +$31.3K +142 New
RFP
365
Root Financial Partners
California
$33.4K +$30.9K +140 New
Mitsubishi UFJ Asset Management
366
Mitsubishi UFJ Asset Management
Japan
$31.5K – – –
C
367
Covestor
United Kingdom
$28K -$61.7K -280 -71%
AAP
368
Arax Advisory Partners
Colorado
$24.3K -$18.5K -84 -45%
TCOT
369
Trust Company of Toledo
Ohio
$23.6K – – –
SAM
370
Smartleaf Asset Management
Massachusetts
$23.4K +$16.8K +76 +345%
PFBT
371
Parkside Financial Bank & Trust
Missouri
$22.9K – – –
SS
372
SBI Securities
Japan
$22.2K – – –
HIM
373
Hillsdale Investment Management
Ontario, Canada
$21.5K -$672K -3,050 -97%
GAG
374
Goodman Advisory Group
Massachusetts
$19.3K – – –
ADL
375
Asset Dedication LLC
California
$18.1K – – –
13 14
15
16 17

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.