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Overlap Matrix Compare filer portfolios side by side
Clone Backtest Backtest a combined clone of several filers
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13F Activity

13F Statistics Aggregate filing statistics
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Conviction Heat Map Crowded positions at a glance

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IPO Feed S-1 registrations turned into structured data
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Congress Leaderboard Members ranked by portfolio performance

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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

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John Castle

John Castle

CEO

CEO

Earnings-call appearances

Foster L B Co Q1 FY2026 Earnings Call
Foster L B Co (FSTR)

2026-05-04
Foster L B Co Q4 FY2025 Earnings Call
Foster L B Co (FSTR)

2026-03-03

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