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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

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Stocks
REFR
10-K/A

10-K/A

Research Frontiers Inc (REFR)

10-K/A 2025-04-16 For: 2023-12-31

View Original

Added on April 09, 2026

10-K/A · REFR

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