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Adtran Holdings shares owned by Granahan Investment Management

Quarter-by-quarter ownership of Adtran Holdings (ADTN) shares owned by Granahan Investment Management from 13F filings

Historical chart of Granahan Investment Management investment in Adtran Holdings

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All positions including Adtran Holdings held by Granahan Investment Management consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Adtran Holdings by Granahan Investment Management

Quarter filed Position value Share count Share price at filing
2025-09-30 $5.5M 583k 9.38
2025-06-30 $1.8M 200k 8.97
2025-03-31 $315k 36k 8.72