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Nanophase Technologies Corporation shares owned by Vanguard Group

Quarter-by-quarter ownership of Nanophase Technologies Corporation (SLSN) shares owned by Vanguard Group from 13F filings

Historical chart of Vanguard Group investment in Nanophase Technologies Corporation

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All positions including Nanophase Technologies Corporation held by Vanguard Group consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Nanophase Technologies Corporation by Vanguard Group

Quarter filed Position value Share count Share price at filing
2025-12-31 $1.7M 1.0M 1.60
2025-09-30 $3.4M 1.0M 3.22
2025-06-30 $4.1M 941k 4.36
2011-09-30 $497k 730k 0.68
2011-06-30 $874k 729k 1.20
2011-03-31 $967k 676k 1.43