AFFILIATED MANAGERS GROUP (AMG): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in AMG · Financials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
23
13F filers
Aggregate Value
$1.0B
Across holders
Last Price
$358.94
2026-08-24
Sector
Financials
GICS
Quarterly fund activity9 increased10 reduced5 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| ARIEL INVESTMENTS, LLC CIK 0000936753 | Institutional Manager | 1000K | $338.3M | 33.6% | 3.4% | Reduced | $-345.8M | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 875K | $296.1M | 29.4% | 0.1% | Added | +$294.3M | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 269K | $90.9M | 9.0% | 0.1% | Added | +$38.7M | Q2 2026 |
| Fisher Asset Management, LLC CIK 0000850529 | Institutional Manager | 246K | $83.4M | 8.3% | 0.0% | Reduced | $-2.3M | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 198K | $67.2M | 6.7% | 0.0% | Reduced | +$63.3M | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 117K | $39.7M | 3.9% | 0.1% | Added | +$2.6M | Q2 2026 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC CIK 0001556921 | Hedge Fund | 54K | $18.3M | 1.8% | 0.1% | Reduced | $-26.0M | Q2 2026 |
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 43K | $14.5M | 1.4% | 0.0% | Added | $-12.1M | Q2 2026 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 27K | $9.0M | 0.9% | 0.0% | Reduced | $-13.4M | Q2 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 | Hedge Fund | 25K | $8.4M | 0.8% | 0.0% | Unchanged | +$0 | Q2 2026 |
Reduced
Institutional Manager
$338.3M· 33.6% of total· 3.4% port· 1000K sh· $-345.8M QoQ· Q2 2026
Added
Hedge Fund
$296.1M· 29.4% of total· 0.1% port· 875K sh· +$294.3M QoQ· Q2 2026
Added
Hedge Fund
$90.9M· 9.0% of total· 0.1% port· 269K sh· +$38.7M QoQ· Q2 2026
Reduced
Institutional Manager
$83.4M· 8.3% of total· 0.0% port· 246K sh· $-2.3M QoQ· Q2 2026
Reduced
Hedge Fund
$67.2M· 6.7% of total· 0.0% port· 198K sh· +$63.3M QoQ· Q2 2026
Added
Hedge Fund
$39.7M· 3.9% of total· 0.1% port· 117K sh· +$2.6M QoQ· Q2 2026
Reduced
Hedge Fund
$18.3M· 1.8% of total· 0.1% port· 54K sh· $-26.0M QoQ· Q2 2026
Added
Hedge Fund
$14.5M· 1.4% of total· 0.0% port· 43K sh· $-12.1M QoQ· Q2 2026
Reduced
Hedge Fund
$9.0M· 0.9% of total· 0.0% port· 27K sh· $-13.4M QoQ· Q2 2026
Unchanged
Hedge Fund
$8.4M· 0.8% of total· 0.0% port· 25K sh· +$0 QoQ· Q2 2026
Reduced
Hedge Fund
$8.1M· 0.8% of total· 0.0% port· 24K sh· $-1.0M QoQ· Q2 2026
Added
Hedge Fund
$7.9M· 0.8% of total· 0.0% port· 23K sh· +$5.5M QoQ· Q2 2026
Added
Hedge Fund
$6.0M· 0.6% of total· 0.0% port· 18K sh· +$5.1M QoQ· Q2 2026
Added
Hedge Fund
$4.9M· 0.5% of total· 0.5% port· 14K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$4.0M· 0.4% of total· 0.0% port· 12K sh· $-73K QoQ· Q2 2026
Reduced
Hedge Fund
$2.7M· 0.3% of total· 0.0% port· 8K sh· $-1.6M QoQ· Q2 2026
Unchanged
Hedge Fund
$1.9M· 0.2% of total· 0.0% port· 6K sh· $-648K QoQ· Q2 2026
Added
Hedge Fund
$1.9M· 0.2% of total· 0.0% port· 6K sh· +$161K QoQ· Q2 2026
Unchanged
Hedge Fund
$1.9M· 0.2% of total· 0.1% port· 6K sh· +$0 QoQ· Q2 2026
Reduced
Hedge Fund
$1.4M· 0.1% of total· 0.0% port· 4K sh· $-3.2M QoQ· Q2 2026
Unchanged
Institutional Manager
$795K· 0.1% of total· 0.0% port· 2K sh· +$0 QoQ· Q2 2026
Added
Institutional Manager
$203K· 0.0% of total· 0.0% port· 600 sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$81K· 0.0% of total· 0.0% port· 238 sh· $-123K QoQ· Q2 2026
1–10 of 23
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