AMGAffiliated Managers Group, Inc.

$387.34+60% 1Y
Latest close: a new 52-week highOct 9, 2026what changed →

Who owns AMG

558 institutions reported holding AMG for 2026Q2, together 91% of the company, more than the 535 a quarter earlier.

558

Institutions reporting a position · as of 2026Q2 · up from 535 the quarter before

Shares held by institutions
25.1M

Shares held by institutions · 91% of the company · long US equity positions only, as reported on Form 13F

Reported value
$8.47B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
33%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
53
New positions
82
Positions exited
61
Added to
146
Reduced
196
Top 10 holdersof the company
47%
Shares sold shortsettled Sep 15, 2026
1.0M
Short interestof shares outstanding
3.8%
Days to coverat the average daily volume
3.8
Change in the short positionsince the Aug 31, 2026 count
+20%
Institutional ownership by quarter, 2013Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q255825.1M$8.47B
2026Q153524.7M$6.83B
2025Q450125.9M$7.44B
2025Q344426.2M$6.25B
2025Q242826.8M$5.28B
2025Q139327.7M$4.65B
2024Q440428.3M$5.20B
2024Q341828.3M$5.04B
2024Q240329.3M$4.57B
2024Q139830.4M$5.09B
2023Q438131.5M$4.77B
2023Q335331.8M$4.14B
2023Q237533.4M$4.94B
2023Q138235.2M$4.90B
2022Q436535.0M$5.50B
2022Q332936.3M$4.06B
Largest reported holders, 2026Q2
HolderShares% of companyValue
BlackRock Inc.2.8M10%$938M
VANGUARD GROUP INC2.8M10%$936M
MORGAN STANLEY1.5M5.4%$503M
Robeco Investment Management, Inc.1.0M3.6%$339M
ARIEL INVESTMENTS, LLC1.0M3.6%$338M
STATE STREET CORP0.9M3.2%$299M
MILLENNIUM MANAGEMENT LLC0.9M3.2%$296M
FULLER & THALER ASSET MANAGEMENT, INC.0.9M3.1%$290M
DIMENSIONAL FUND ADVISORS LP0.7M2.4%$227M
GEODE CAPITAL MANAGEMENT LLC0.6M2.1%$200M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20261.0M3.8%3.8
Aug 31, 20260.9M3.2%3.3
Aug 14, 20260.7M2.5%2.8
Jul 31, 20260.8M2.8%2.7
Jul 15, 20260.9M3.2%3.8
Jun 30, 20261.0M3.8%2.9
Jun 15, 20261.3M4.6%3.2
May 29, 20261.0M3.7%3.2
May 15, 20260.8M3.0%2.7
Apr 30, 20260.7M2.6%2.0
Apr 15, 20261.0M3.6%2.8
Mar 31, 20260.8M2.8%2.0

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

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