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Buy Day today: Good (62) Broad market participation · no major macro event
REFR

Research Frontiers Incorporated

Technology · Electronic Components

0.3865$ +1.7% vs. previous close Closing price · As of: Sep 17, 2026

Ownership

Ownership Structure

Who owns Research Frontiers Incorporated (REFR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 78.0% of the shares are freely tradable; institutional investors hold 13.7%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 13.7%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 15.3%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 78.0%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 1.3%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 35Mio.

Largest Shareholders

Institutions

Institutions REFR
Name Stake (%) Shares Change (%) Date
We Are One Seven, LLC 2.54 886,602 -3.4 06/30/2026
BlackRock Inc 1.74 608,398 +0.5 03/31/2026
Vanguard Capital Management, LLC 1.63 568,154 +0.0 03/31/2026
The Colony Group LLC 1.42 496,422 +0.0 03/31/2026
Geode Capital Management, LLC 0.87 302,761 -2.7 03/31/2026
Vanguard Fiduciary Trust Co 0.51 177,030 +0.0 03/31/2026
Susquehanna International Group, LLP 0.45 156,786 +27.5 03/31/2026

Funds

Funds REFR
Name Stake (%) Shares Change (%) Date
Vanguard MStar Total Stk Mkt Idx Invest 0.83 288,587 +0.0 07/31/2026
Vanguard Institutional Extnd Mkt Idx Tr 0.81 282,644 +0.0 07/31/2026
Fidelity Extended Market Index 0.41 144,603 -0.2 07/31/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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