Shares in SmileDirectClub (NSDQ:SDC) regained some of their value this morning after closing down some -28% after their public debut yesterday.

Nashville, Tenn.-based SmileDirectClub makes 3D-printed clear dental aligners designed to provide an alternative to traditional braces. The company floated 58.5 million shares at $23 apiece in its $1.35 billion initial public offering yesterday, only to open at $20.55, down -10.7%.

The stock hit a $21.10 high and a $17.01 low yesterday before closing at $16.67 per share, off by -27.5%. SDC shares ticked up 3.4% to $17.24 apiece today in pre-market trading.

SmileDirectClub earmarked $493.4 million of the net proceeds — or approximately $664.4 million if an over-allotment option is exercised in full — to buy subsidiary SDC Financial and to repurchase shares from existing shareholders. J.P. Morgan, Citigroup, Bank of America, Merrill Lynch, Jefferies, UBS Investment Bank, Credit Suisse, Guggenheim Securities, Stifel, William Blair and Loop Capital Markets are expected to deliver their shares.

In a March arbitration hearing, SmileDirectClub won a decision that forced rival Align Technology (NSDQ:ALGN) to close its InvisAlign retail stores after an arbitrator decided that Align breached a non-compete contract with SmileDirectClub and “misused the SDC Entities’ confidential information and violated fiduciary duties” to SmileDirectClub.

In April, CVS (NYSE:CVS) announced a deal to launch SmileDirectClub SmileShops within hundreds of CVS pharmacies over the course of the year. SmileDirectClub’s website lists 92 SmileShop locations at CVS stores in 22 different states.