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Biogen Idec shares owned by Costello Asset Management

Quarter-by-quarter ownership of Biogen Idec (BIIB) shares owned by Costello Asset Management from 13F filings

Historical chart of Costello Asset Management investment in Biogen Idec

Tip: Access up to 7 years of quarterly data

All positions including Biogen Idec held by Costello Asset Management consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Biogen Idec by Costello Asset Management

Quarter filed Position value Share count Share price at filing
2025-12-31 $53k 300 175.99
2025-09-30 $42k 300 140.08
2025-06-30 $38k 300 125.59
2025-03-31 $41k 300 136.84