Today's Pre-Open Stock Movers:

Siebert Financial Corp. (NASDAQ: SIEB) 241% HIGHER; sees gains, possibly as traders leave Robinhood.

GameStop Corp. (NYSE: GME) 99% HIGHER; Robinhood will again allow limited trades

Koss Corporation (NASDAQ: KOSS) 69% HIGHER; Robinhood will again allow limited trades

AMC (NYSE: AMC) 65% HIGHER; Robinhood will again allow limited trades

Novavax, Inc. (Nasdaq: NVAX) 54% HIGHER; announced that NVX-CoV2373, its protein-based COVID-19 vaccine candidate, met the primary endpoint, with a vaccine efficacy of 89.3%, in its Phase 3 clinical trial conducted in the United Kingdom (UK). The study assessed efficacy during a period with high transmission and with a new UK variant strain of the virus emerging and circulating widely. It was conducted in partnership with the UK Governments Vaccines Taskforce. Novavax also announced successful results of its Phase 2b study conducted in South Africa.

Ucommune International Ltd. (NASDAQ: UK) 27.9% LOWER; announced the pricing of an underwritten offering of 4,938,271 Class A ordinary shares (the "Ordinary Shares") and warrants (the "Warrants") to purchase 4,938,271 Class A ordinary shares at a combined offering price of US$4.05 for one Ordinary Share and one Warrant to purchase one Ordinary Share.

Riot Blockchain, Inc. (NASDAQ: RIOT) 25% HIGHER; bitcoin surges on Elon Musk plug

Marathon Patent Group, Inc. (NASDAQ: MARA) 22% HIGHER; bitcoin surges on Elon Musk plug

9 Meter Biopharma (NASDAQ: NMTR) 20.6% HIGHER; Oppenheimer initiates coverage with an Outperform rating and a price target of $6.00.

Outlook Therapeutics, Inc. (Nasdaq: OTLK) 17.2% LOWER; announced today that, due to demand, the underwriter has agreed to increase the size of the previously announced public offering and purchase on a firm commitment basis 35,000,000 shares of common stock of Outlook Therapeutics, at a price to the public of $1.00 per share, less underwriting discounts and commissions. The closing of the offering is expected to occur on or about February 2, 2021, subject to satisfaction of customary closing conditions.

Moderna, Inc. (NASDAQ: MRNA) 17% HIGHER; gains as J&J vaccine data not as robust

Skyworks Solutions (NASDAQ: SWKS) 15% HIGHER; reported Q1 EPS of $3.36, $1.28 better than the analyst estimate of $2.08. Revenue for the quarter came in at $1.5 billion versus the consensus estimate of $1.06 billion. Skyworks Solutions sees Q2 2021 EPS of $2.34, versus the consensus of $1.70. Skyworks Solutions sees Q2 2021 revenue of $1.125-1.175 billion, versus the consensus of $0.915 billion.

BlackBerry (NYSE: BB) 10.2% HIGHER; Robinhood will again allow limited trades

Bed Bath & Beyond Inc. (NASDAQ: BBBY) 9.4% HIGHER; Robinhood will again allow limited trades

Evelo Biosciences, Inc. (Nasdaq: EVLO) 8.7% LOWER; announced that it intends to offer and sell, subject to market and other conditions, $50 million of its common stock in an underwritten public offering.

Adamis Pharmaceuticals Corporation (Nasdaq: ADMP) 8.6% LOWER; announced today that it intends to offer to sell shares of its common stock in an underwritten public offering.

Aspira Women's Heath (NASDAQ: AWH) 7.2% HIGHER; Cantor Fitzgerald initiates coverage with an Overweight rating and a price target of $10.00.

Neuronetics, Inc. (NASDAQ: STIM) 5% LOWER; announced that it has commenced an underwritten public offering of its common stock.

Juniper Networks (NYSE: JNPR) 4.3% LOWER; reported Q4 EPS of $0.55, $0.02 better than the analyst estimate of $0.53. Revenue for the quarter came in at $1.22 billion versus the consensus estimate of $1.19 billion.

U.S. Xpress Enterprises (NYSE: USX) 3% LOWER; reported Q4 EPS of $0.15, $0.03 worse than the analyst estimate of $0.18. Revenue for the quarter came in at $455.74 million versus the consensus estimate of $459.12 million.