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$QSI

$1.22▲ -3.9% YTD

5 SEC 13D/G filings tracked · Last updated Oct 8, 2026

Filing History
News
QSI ▼ -3.9% - Quantum-Si incorporated
CP $1.22▲ -3.9%Oct 8, 2026 · ThinkSabio Blog

$QSI - Quantum-Si Demonstrates Detection of 19 Amino Acids in Proteus™ Development Program…

News
QSI ▲ +2.7% - Quantum-Si incorporated
CP $0.75▲ +2.7%Sep 15, 2026 · ThinkSabio Blog

$QSI - Quantum-Si Announces Detection of 18 Amino Acids Using a Developmental Sequencing Kit on Proteus™…

News
QSI ▲ +1.3% - Quantum-Si incorporated
CP $0.78▲ +1.3%Sep 9, 2026 · ThinkSabio Blog

$QSI - Quantum-Si Expands Proteus™ Roadshow with Additional U.S. and European Cities…

SEC 13D/G
QSI - Quantum-Si incorporated - SEC Filing Update (28-AUG-2026) | ThinkSabio - Stocks Simplified
$0.79▼ -31.90%Aug 28, 2026 · ThinkSabio Blog

$QSI SEC 13D/G institutional ownership filing. Healthcare sector. SEC Filing Update: #QSI Quantum-Si incorporated : $0.79 Sector: Healthcare | YTD: 🔽…

SEC 13D/G
$QSI SEC Filing Update (29-JUL-2026) | ThinkSabio - Stocks Simplified
$0.72▼ -37.93%Jul 29, 2026 · ThinkSabio Blog

$QSI SEC 13D/G institutional ownership filing. Healthcare sector. SEC Filing Update: #QSI : $0.72 Sector: Healthcare | YTD: 🔽 -37.93% The SEC disclose…