JPMorgan's $1.59T 13F Is a Mega-Cap Core, but the Top Five Still Total Only 18.0%

JPMorgan Chase & Co ran a $1.59 trillion Q4 2025 13F that looks exactly like you would expect from a system-scale institution: NVIDIA, Microsoft, Apple, Amazon, and Broadcom sit at the top, but the top five still amount to only 18.0% of assets. That is the important tension. The bank has massive exposure to the winners of the market, yet the overall book remains broad enough that no single name can define it.

TL;DR

• 13F AUM: $1.59T.
• Largest holding: NVDA at 5.34%.
• Top-5 concentration: 18.03%.
• Top-10 concentration: 26.27%.
• Main read: This is a mega-cap-heavy book, but not a fragile one.
• Cross-check: Compare with our giant-filer breadth comparison, our mega-cap ownership map, and our scale guide.

Filing Snapshot

The Book Is Concentrated in Leadership, Not in Structure

It is easy to look at the top line-up and conclude that JPMorgan is just another giant institution hugging the same winners as everyone else. That is directionally true, but incomplete. The more useful insight is structural. Even with NVIDIA, Microsoft, and Apple at the top, the weights remain moderate. No position is above 6%, and the top ten do not even reach 27%.

That tells you this filing behaves less like a conviction fund and more like a very large institutional representation of market leadership. The bank clearly wants exposure to the strongest compounders and infrastructure winners, but it is not delegating total portfolio behavior to them.

Why the SPY Line Matters

One of the more useful tells in the top ten is SPY at 1.91%. That confirms the book is not only about single-name ownership. It also uses benchmark exposure directly. In practical terms, JPMorgan's filing reads like a layered institutional core: flagship tech winners, broad market representation, and then a long tail that keeps the portfolio from becoming a pure momentum statement.

What Analysts Might Misread

The common mistake is to overread the dollar values. Yes, the bank owns an enormous amount of NVDA and MSFT. But what matters for portfolio behavior is that these still occupy single-digit weights. The book is giant, not reckless.

Questions Investors Search For

Is JPMorgan Chase highly concentrated in mega-cap tech?

It is clearly tilted toward mega-cap leaders, but the overall concentration remains moderate for a filing of this size.

Why does an 18% top five matter?

Because it shows the portfolio still has significant breadth even though the same famous winners lead the book.

What does SPY in the top ten suggest?

That the filing mixes single-name leadership exposure with direct benchmark sleeves.

How should retail investors use this filing?

As a map of institutional market leadership, not as a copy-paste high-conviction portfolio.