Market Essence: 13F Tracker
See what the whales hold
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Now built for iPhone Duo: browse 13,000+ institutions on one page and read a fund's whole book on the other. Every 13F filing, straight from SEC EDGAR.
Four times a year, every institution managing over $100M must tell the SEC exactly what it holds. Those 13F filings are public — but they're buried in raw XML tables nobody reads. Market Essence turns them into pictures.
BROWSE THE WHOLE UNIVERSE
• All 13,000+ 13F-filing institutions, searchable by name
• Vanguard, Berkshire Hathaway and Citadel free forever — every other fund unlocks with one Premium subscription
PROFILE — WHO IS THIS FUND?
• Portfolio value with its full filing history since 2013
• Identity facts straight from EDGAR: focus, headquarters, filing record
• Concentration at a glance: how much rides on the top 10 positions
HOLDINGS — WHAT DO THEY OWN RIGHT NOW?
• Treemap of the entire book — re-tile it by value, by share count, or by what changed this quarter
• Sunburst rings: how concentrated is the book, and in what
• Bubble chart: are the big bets being fed or faded?
• The full position list, filterable and searchable
HISTORY — HOW HAS THE BOOK SHIFTED?
• Money map: the quarter's selling flows into the quarter's buying, one honest sankey diagram
• Bought vs sold, ranked face to face
• Composition heatmap with three lenses — weight, quarter-over-quarter change, and action (the fund's behavioural fingerprint)
• Auto-detected streaks: "bought 6 quarters straight"
• Focus any period: entire history, last 2 quarters, last 4, or a custom range
STOCKS — FOLLOW ONE NAME
• Tap any stock for its whole journey in the fund's book: shares vs value, every add and trim, peak weight, and how it ranks today
• Smart lists mean no typing: top holdings, biggest adds, biggest trims, new & exited
Data comes directly from SEC EDGAR and updates as new filings land each quarter. Market Essence is not affiliated with or endorsed by the U.S. Securities and Exchange Commission. Nothing in the app is investment advice.
SUBSCRIPTION
Market Essence Premium — US$4.99 per month, auto-renewing monthly until
cancelled. Payment is charged to your Apple ID at confirmation of purchase.
The subscription renews automatically unless it is turned off at least 24
hours before the end of the current period; manage or cancel in Settings >
Apple ID > Subscriptions.
Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy:
https://marketessence.tech/privacy-and-terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
BUILT FOR IPHONE DUO
Market Essence now makes full use of both displays on iPhone Duo. Closed, the tabs sit in the side bar beside the clock and every screen stays clear of it. Open, the app spreads across the whole inner display: browse the registry on one page and read a fund's snapshot — value since 2013, concentration, top holdings — on the other. Institution pages lay out side by side, and the charts use the extra width to show far more history: up to 23 quarters in the composition heatmap, 22 in net flow, and more named positions in the treemap. Fold or unfold at any time and you stay exactly where you were.
ALSO IN THIS RELEASE
- Scrubbing the portfolio-value chart now picks the exact quarter under your finger.
- Built with the latest iOS SDK.
Questions or ideas? marketessence.tech/contact-us
The developer, Zaichuang Cui, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Zaichuang Cui
- Size
- 43.7 MB
- Category
- Finance
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Premium Monthly $4.99
- Copyright
- © 2026 Zaichuang Cui
