Koch Industries-owned Wood River Capital, LLC filed a 13D/A form with the SEC disclosing ownership of 19.2 million Aspen Aerogels (ASPN) shares, or 27.6% of the company, up from its prior 21%.

Investors in Aspen Technology, Inc. AZPN need to pay close attention to the stock based on moves in the options market lately. That is because the Apr 17, 2025 $140.00 Put had some of the highest ...