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Andreessen Horowitz has secured over $15 billion in its largest funding round to date, focusing on investments in artificial intelligence, biotech, and defense. This capital boost increases the firm's assets under management to over $90 billion and includes significant allocations for its growth, American Dynamism, and Bio & Health funds. The fundraising represents approximately 18% of total U.S. venture capital raised in 2025, underscoring the firm's commitment to American technological leadership.