v3.25.3

Fair value of financial instruments and marketable securities - Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024
Financial assets and liabilities measured at fair value on recurring basis
Marketable securities - available for sale	$ 971,244		$ 330,953
ClearPoint Equity Investments				$ 10,028
Contingent consideration payable		$ 0	800
Transfers of assets measured between Level 1, Level 2, and Level 3	0		0
Recurring basis
Financial assets and liabilities measured at fair value on recurring basis
Marketable securities - available for sale	971,244		330,953
Marketable securities - equity investments	43,956		29,034
ClearPoint Equity Investments	19,493		13,759
Recurring basis \| Quoted prices in active markets for identical assets (Level 1)
Financial assets and liabilities measured at fair value on recurring basis
Marketable securities - equity investments	43,956		29,034
ClearPoint Equity Investments	19,493		13,759
Recurring basis \| Significant other observable inputs (Level 2)
Financial assets and liabilities measured at fair value on recurring basis
Marketable securities - available for sale	$ 971,244		330,953
Recurring basis \| Net Sales Milestones
Financial assets and liabilities measured at fair value on recurring basis
Contingent consideration payable			800
Recurring basis \| Net Sales Milestones \| Significant unobservable inputs (Level 3)
Financial assets and liabilities measured at fair value on recurring basis
Contingent consideration payable			$ 800

Amount of investment in equity security of ClearPoint Neuro, Inc. measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of transfers of assets measured on a recurring basis between Level 1, Level 2, and Level 3 of the fair value hierarchy.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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PTC THERAPEUTICS, INC. 10-Q