American Century Companies’s Aspen Aerogels ASPN Stock Holding History

American Century Companies's ASPN Position: Q1 2026 in Review

American Century Companies increased its Aspen Aerogels (ASPN) stake by 7.8% in Q1 2026, buying an estimated $303K and bringing the position to 1,247,783 shares worth $4.27M. The position accounts for ﹤0.01% of the portfolio, ranked #1843.

American Century Companies first reported a position in ASPN in Q4 2021 and has held it in 12 quarters since. The position peaked at $41.3M in Q3 2024. 166 funds tracked by Wall St. Rank hold ASPN as of Q1 2026.

• American Century Companies held 1,247,783 shares of Aspen Aerogels worth $4.27M as of Q1 2026.
• American Century Companies bought 89,805 Aspen Aerogels shares in Q1 2026, an estimated $303K.
• Aspen Aerogels made up ﹤0.01% of American Century Companies's portfolio in Q1 2026, its #1843 holding.
• American Century Companies first reported a position in Aspen Aerogels in Q4 2021 and has held it in 12 quarters since.
• American Century Companies's Aspen Aerogels position peaked at $41.3M in Q3 2024.
• 166 funds tracked by Wall St. Rank held Aspen Aerogels as of Q1 2026.

Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.