AMG Institutional Ownership
Who owns Affiliated Managers Group, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 566 funds reported holding AMG at Jun 30, 2026, together owning 97.6% of the company.
- ●232 buying vs 266 selling
- ▲Held by funds +1.6 pts
- ▲Funds holding +18
- ▼Superinvestors: 2 added, 3 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 566 | 548 | +3.3% |
| In funds' top 10 | 6 | 5 | +20.0% |
| 13F shares | 25.2M | 24.8M | +1.7% |
| Held by funds | 97.6% | 96.0% | +1.6 pts |
| New positions | 75 | 80 | −6.3% |
| Increased | 157 | 213 | −26.3% |
| Reduced | 214 | 135 | +58.5% |
| Sold out | 52 | 47 | +10.6% |
| Calls (shares) | 32K | 2,500 | +1184.0% |
| Puts (shares) | 500 | 1,680 | −70.2% |
| Put/call ratio | 0.02 | 3.84 | −99.6% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in AMG
All superinvestors →
Who owns AMG
share of fund held shares- Index and passive funds34.9%
- Active managers and hedge funds44.4%
- Banks and brokers16.0%
- Pensions, insurers and other4.7%
The top 10 holders own 47.9% of all AMG shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
157 funds changed their position- Swedbank ABNew+60K sh
- Channing Capital Management, LLCTrimmed−47K sh
- Calamos Advisors LLCSold out−35K sh
- Capricorn Fund Managers LtdTrimmed−17K sh
- Arbejdsmarkedets TillaegspensionTrimmed−16K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 10.72% | 2.8M | $938M | −95K |
| 2 | Morgan Stanley | 5.75% | 1.5M | $503M | −245K |
| 3 | Vanguard Portfolio Management LLC | 5.38% | 1.4M | $471M | +32K |
| 4 | Vanguard Capital Management LLC | 4.45% | 1.2M | $390M | −24K |
| 5 | Boston Partners | 3.87% | 1M | $339M | +31K |
| 6 | Ariel Investments, LLC | 3.87% | 1000K | $338M | −64K |
| 7 | State Street Corp | 3.42% | 883K | $299M | −43K |
| 8 | Millennium Management LLC | 3.38% | 875K | $296M | +870K |
| 9 | Fuller & Thaler Asset Management, Inc. | 3.32% | 858K | $290M | +98K |
| 10 | Dimensional Fund Advisors LP | 2.59% | 670K | $227M | −48K |
- Millennium Management LLC+870K sh+$294M
- Norges Bank+361K sh+$122M
- Qube Research & Technologies Ltd+115K sh+$38.7M
- Fuller & Thaler Asset Management, Inc.+98K sh+$33M
- Goldman Sachs Group Inc+73K sh+$24.7M
- Zurich Insurance Group Ltd/FI+71K sh+$24.1M
- Capricorn Fund Managers Ltd+69K sh+$23.4M
- Invesco Ltd.+64K sh+$21.7M
- Morgan Stanley−245K sh−$83M
- Artisan Partners Limited Partnership−174K sh−$48M
- Woodline Partners LP−146K sh−$40.4M
- BlackRock, Inc.−95K sh−$32.1M
- Clarkston Capital Partners, LLC−85K sh−$28.8M
- Voloridge Investment Management, LLC−77K sh−$26M
- Man Group plc−67K sh−$22.5M
- Ariel Investments, LLC−64K sh−$21.8M
AMG institutional ownership FAQ
Who owns the most AMG stock?
In Q2 2026 13F filings the largest holder of AMG was BlackRock, Inc., followed by Morgan Stanley and Vanguard Portfolio Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of AMG is owned by institutions?
Funds that file 13F reports held 97.6% of AMG's shares at Jun 30, 2026, compared with 96.0% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying AMG?
In Q2 2026, 232 funds bought AMG (75 of them new positions) and 266 sold (52 sold out completely). Among well known investors, 2 added and 3 cut. Our fund sentiment for AMG is neutral.
What is AMG's institutional put/call ratio?
Funds reported $169K of AMG puts against $10.9M of calls, a put/call ratio of 0.02 (3.84 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this AMG ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.