After-Hours Stock Movers:

Opiant Pharmaceuticals, Inc.(NASDAQ: OPNT) 51.7% HIGHER; Announced positive top-line results from its confirmatory pharmacokinetic study for OPNT003, nasal nalmefene, for opioid overdose.

IDEAYA Biosciences, Inc. (Nasdaq: IDYA) 10.9% LOWER; announced that it intends to offer and sell up to $80 million of shares of its common stock in an underwritten public offering.

Immersion Corporation (NASDAQ: IMMR) 9% HIGHER; sees second-quarter revenues between $10.5 to $11.0 million, versus the consensus of $8 million.

Manhattan Bridge Capital, Inc. (Nasdaq: LOAN) 6.7% LOWER; announced today that it is proposing to offer its common shares, par value $0.001 per share, in an underwritten public offering.

ConforMIS Inc (NASDAQ: CFMS) 4.8% HIGHER; reached a settlement with Wright Medical and Tornier related to patent infringement lawsuit.

SMART Global Holdings, Inc. (NASDAQ: SGH) 4% HIGHER; reported Q3 EPS of $1.39, $0.30 better than the analyst estimate of $1.09. Revenue for the quarter came in at $437.7 million versus the consensus estimate of $415.57 million. SMART Global Holdings, Inc. sees Q4 2021 EPS of $1.45-$1.75, versus the consensus of $1.23. SMART Global Holdings, Inc. sees Q4 2021 revenue of $440-480 million, versus the consensus of $439.35 million.

ChemoCentryx (NASDAQ: CCXI) 3.9% HIGHER; Stifel upgraded from Hold to Buy with a price target of $31.00 (from $26.00).

Ellington Financial Inc. (NYSE: EFC) 2.9% LOWER; announced today that it has commenced an underwritten public offering of 7,500,000 shares of common stock.

Steel Dynamics, Inc. (NASDAQ: STLD) 2.2% HIGHER; announced that the company's board of directors authorized an additional share repurchase program of up to $1.0 billion of the company's common stock. The authorization is effective immediately and is additive to the previous $500 million program, which had $51 million remaining authorized and available for repurchase at June 30, 2021.