AUM (Assets Under Management) is the total market value of assets an investment firm manages on behalf of clients. It is the standard yardstick for ranking asset managers — BlackRock leads with roughly $11 trillion.

How can I see what stocks these firms actually hold?

US institutional managers with over $100M in US equities must file Form 13F with the SEC within 45 days after each quarter ends. These filings are free to view on SEC EDGAR and reveal every US-listed stock position — this is how Berkshire Hathaway's or Bridgewater's portfolios become public.

Should I copy BlackRock's or Vanguard's portfolio?

Mostly no — their giant holdings largely mirror index funds (their positions in Apple or Microsoft reflect index weights, not conviction bets). Hedge fund 13Fs (Berkshire, Bridgewater) are more informative, but remember filings are up to 45 days stale and exclude shorts and non-US assets.

What's the difference between an asset manager and a hedge fund?

Traditional asset managers run mutual funds and ETFs for the general public under strict regulation, mostly long-only. Hedge funds serve qualified investors, use leverage, shorting and derivatives, and charge performance fees.

Can I invest in the asset managers themselves?

Yes — many are listed: BlackRock (BLK), Blackstone (BX), KKR (KKR), T. Rowe Price (TROW), Franklin Resources (BEN), Invesco (IVZ) trade on US exchanges, and their earnings tend to track global asset prices and fund flows.

Global Investing12 min readUpdated 2026-07-04

Top 20 Global Asset Managers 2026

BlackRock to DWS — the world's largest money managers by AUM, famous hedge funds, and how to peek inside their portfolios.

TL;DR

BlackRock (~$11.5T) and Vanguard (~$9.9T) manage more money than most countries' GDP.
The top of the table is dominated by US passive giants; Europe's largest is Amundi (#8).
Hedge funds like Bridgewater or Citadel are far smaller by AUM but famous for performance.
You can legally see their US stock holdings each quarter via SEC 13F filings — free on EDGAR.

What is an asset manager?

An asset manager invests money on behalf of clients — pension funds, insurers, and individual investors — through mutual funds, ETFs, and institutional mandates. Firms are ranked by AUM (Assets Under Management), the total market value of everything they run. The industry splits broadly into passive giants that track indexes at minimal cost (Vanguard, State Street) and active managers that try to beat the market (Fidelity, Capital Group, T. Rowe Price).

Top 20 by AUM (2026)

#	Manager	HQ	AUM	Known for
1	BlackRock	New York, US	$11.5T	World #1 · runs iShares ETFs
2	Vanguard	Pennsylvania, US	$9.9T	Index fund pioneer · VOO, VTI
3	Fidelity	Boston, US	$5.5T	Active management · 401(k) leader
4	State Street (SSGA)	Boston, US	$4.7T	Runs SPY, the first & largest ETF
5	J.P. Morgan AM	New York, US	$3.6T	Largest bank-owned · JEPI ETFs
6	Goldman Sachs AM	New York, US	$2.9T	Institutional & alternatives
7	Capital Group	Los Angeles, US	$2.8T	American Funds · long-term active
8	Amundi	Paris, France	$2.4T	Europe's largest asset manager
9	BNY Investments	New York, US	$2.0T	World's largest custodian bank arm
10	PIMCO (Allianz)	California, US	$2.0T	The bond king
11	UBS AM	Zurich, Switzerland	$1.9T	Absorbed Credit Suisse
12	Invesco	Atlanta, US	$1.9T	Runs QQQ (Nasdaq-100 ETF)
13	Franklin Templeton	California, US	$1.7T	Emerging markets pioneer
14	T. Rowe Price	Baltimore, US	$1.6T	Growth-stock active specialist
15	Morgan Stanley IM	New York, US	$1.6T	Expanded via Eaton Vance
16	Legal & General (LGIM)	London, UK	$1.5T	UK's largest · pension LDI
17	Northern Trust AM	Chicago, US	$1.3T	Institutional & custody focus
18	Wellington Management	Boston, US	$1.3T	Sub-advises Vanguard active funds
19	Natixis IM	Paris, France	$1.3T	Multi-boutique (Harris, Loomis)
20	DWS	Frankfurt, Germany	$1.1T	Deutsche Bank arm · Xtrackers

※ AUM figures are approximate (late 2025 – 2026 public disclosures, $1T = $1 trillion). Rankings vary slightly by source and reporting date.

Four types you should tell apart

Passive giants

Track indexes at near-zero fees. Vanguard, SSGA, and BlackRock's iShares. Their stock holdings mirror index weights.

Active managers

Pick stocks to beat the market — Fidelity, Capital Group, T. Rowe Price. Higher fees, conviction-driven portfolios.

Hedge funds

Qualified investors only. Use leverage, shorts and derivatives — Bridgewater, Citadel, Renaissance.

Private equity

Buy whole companies or private assets — Blackstone, KKR, Carlyle, Apollo. Long lock-ups, not daily-traded.

Smaller by AUM, bigger by fame

AUM rankings miss the firms investors actually talk about. These names move markets through performance, ideas, or sheer legend:

Firm	Type	Famous for
Berkshire Hathaway	Holding co.	Warren Buffett · value investing icon
Bridgewater	Hedge fund	World's largest hedge fund · Ray Dalio
Renaissance Technologies	Hedge fund	Quant legend · Medallion Fund
Citadel	Hedge fund	Highest cumulative gains · Ken Griffin
Blackstone	Private equity	#1 in alternatives ($1T+)
KKR · Carlyle · Apollo	Private equity	Top global PE firms
ARK Invest	Thematic ETF	Cathie Wood · disruptive innovation
Baillie Gifford	Long-term growth	Early Tesla & Amazon backer
Mirae Asset	Korea's #1	TIGER ETFs · acquired Global X
Samsung AM	Korea ETF #1	KODEX ETF series

How to see their actual portfolios (13F filings)

US law requires institutional managers with over $100M in US equities to disclose their holdings quarterly via Form 13F, filed with the SEC within 45 days of quarter-end. Anyone can read them for free on SEC EDGAR. This is exactly how the media reports what Warren Buffett bought or sold each quarter.

Before you copy-trade a 13F

Up to 45 days stale — positions may already be sold.
Long US equities only: no shorts, bonds, or non-US holdings.
Index giants' filings (BlackRock, Vanguard) mostly reflect index weights, not conviction.
Hedge fund filings (Berkshire, Bridgewater, Citadel) are the informative ones.

Frequently Asked Questions

This article is for informational purposes only and is not investment advice. AUM figures are approximations compiled from public disclosures and may differ from the latest reported values. All investment decisions are your own responsibility.