Facebook’s rocky relationship with investors just keeps getting worse.

After hitting a new low Tuesday as shares tumbled 6% to $21.71, the drop continued Wednesday. The stock (FB) was down more than 3% to $21.01 at one point.

Four trading sessions after the social-networking giant reported earnings for the first time as a public company, concerns about growth and share valuation are far from over.

The shares are now almost 45% below the $38 a share IPO price when it started trading May 18.

Read More: USAtoday