** Shares of advanced materials firm ASP Isotopes ASPI.O down 10% at $12.65 post-market as it seeks equity raise
** Washington, D.C.-based co commences stock offering; deal size not disclosed
** Cantor Fitzgerald and Lucid Capital Markets are joint bookrunners
** Co has ~93 4 mln shares outstanding as of Oct 10, filing shows, giving it about $1.3 bln market cap
** Shares rose for third straight session on Tues racking up a 59% gain along the way
** Stock finished session up 5.5% at record high close of $14.05, up 210% YTD
(Lance Tupper is a Reuters market analyst. The views expressed are his own)
((lance.tupper@tr.com 1-646-279-6380))