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Overlap Matrix Compare filer portfolios side by side
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Beneficial Ownership Recent 13D / 13G >5% stakes

13F Activity

13F Statistics Aggregate filing statistics
Latest Filings Newest 13F submissions
13F Trends Sector and flow trends
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Conviction Heat Map Crowded positions at a glance

Markets

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IPO Feed S-1 registrations turned into structured data
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Short interest & flow

Most Shorted Squeeze Risk Largest Short Volume Highest Off-Exchange Share

Ownership & fundamentals

Insider Sentiment Largest Buybacks Going-Concern Flags

Institutions 13F filings, portfolios & smart money

Filers & Rankings

Browse Filers Top by AUM Smart Money Index Superinvestors AUM Movers Most-Held Stocks Last Quarter's Movers Overlap Matrix Clone Backtest Beneficial Ownership

13F Activity

13F Statistics Latest Filings 13F Trends Double-Down Report Conviction Heat Map

Markets Insiders, funds, macro, IPOs & Congress

Insider Trading Funds & ETFs Investment Advisers Economic Data Economic Calendar FDA Calendar IPO Feed Congress Net Worth Congress Leaderboard

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Mark Massero

Mark Massero

Analyst

Analyst — BTIG

Earnings-call appearances

Guardant Health, Inc. Q4 FY2025 Earnings Call
Guardant Health, Inc. (GH)

2026-02-19

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