Astera Labs, Inc. (ALAB) Institutional Ownership

Ownership Summary

Astera Labs, Inc. (NASDAQ:ALAB) currently has 19 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• Institutional ownership in Astera Labs edged down to 0.1% in December 2025, compared to 63.4% in September 2025.
• On a quarter-over-quarter basis, institutional holdings shifted by 82.15%, with a year-over-year a decrease of 95.38% in the count of filers.
• A review of institutional activity for Astera Labs shows 8 of 19 filers increasing their positions, while 9 reduced their stake, and 2 remained unchanged.
• This class of investors increased its holdings in Astera Labs to 97.53K shares for the 13F-cycle ending December 2025, up by 43.99K shares quarter on quarter, and down 96.49Mn shares year over year.
• The top institutional stake in Astera Labs as of December 31, 2025 belongs to SG Americas Securities, LLC, which owns 46.72K shares, or 0.03% of the company.
• Among the most significant buyers of Astera Labs during December 2025 were SG Americas Securities, LLC (26.09K), NORDEA INVESTMENT MANAGEMENT AB (11.86K), NorthCrest Asset Manangement, LLC (6.53K), GAMMA Investing LLC (186), Hilltop National Bank (100).
• Leading sellers of Astera Labs stock in December 2025 included Central Pacific Bank - Trust Division (222), Grove Bank & Trust (221), Harbour Capital Advisors, LLC (200), Teamwork Financial Advisors, LLC (160), GSG Advisors LLC (52).
• The top 10 institutional holders of Astera Labs for the quarter ending December 2025 included SG Americas Securities, LLC (46.72K), NORDEA INVESTMENT MANAGEMENT AB (11.86K), GSG Advisors LLC (8.33K), Harbour Capital Advisors, LLC (6.76K), NorthCrest Asset Manangement, LLC (6.53K), Teamwork Financial Advisors, LLC (5.88K), Central Pacific Bank - Trust Division (3.34K), Diversified Trust Co (2.68K), Wedmont Private Capital (1.53K), Avior Wealth Management, LLC (1.49K).