22 Stocks Moving in Wednesday's Pre-Market Session

Gainers

Stealth BioTherapeutics Corp MITO rose 37.2% to $1.99 in pre-market trading after the company said it received orphan drug designation from the European Medicines Agency for elamipretide for the treatment of Barth syndrome.
AMC Entertainment Holdings, Inc. AMC rose 18.6% to $38.01 in pre-market trading. AMC Entertainment shares jumped around 23% on Tuesday after the company announced it raised $230.5 million of new equity from Mudrick Capital.
BlackBerry Limited BB rose 16.3% to $13.44 in pre-market trading on renewed interest in the stock from retail investors. The company’s stock jumped around 15% on Tuesday.
Neovasc Inc. NVCN rose 14.5% to $1.10 in pre-market trading after gaining over 5% on Tuesday. The company, last week, received NASDAQ notification regarding minimum bid price deficiency.
Orbital Energy Group, Inc. OEG shares rose 9.7% to $8.38 in pre-market trading. Orbital Energy Group jumped 115% on Tuesday after the company announced its subsidiary, Gibson Technical Services, reached an agreement with TEC on a 700-mile engineering and construction project across central Mississippi.
Koss Corporation KOSS rose 9.4% to $26.42 in pre-market trading amid renewed retail investor interest in the stock.
Siebert Financial Corp. SIEB rose 8.4% to $4.93 in pre-market trading after gaining 10% on Tuesday.
Washington Prime Group Inc. WPG shares rose 7.8% to $5.11 in pre-market trading. Washington Prime Group shares surged around 114% on Tuesday on abnormally-high volume.
TOMI Environmental Solutions, Inc. TOMZ rose 7.5% to $2.87 in pre-market trading. The company, last month, reported Q1 results.
Express, Inc. EXPR rose 7.3% to $5.12 in pre-market trading after gaining over 11% on Tuesday.
Vertex Energy, Inc. VTNR shares rose 6.2% to $9.12 in pre-market trading after climbing 10% on Tuesday. The company, last week, announced it will acquire an Alabama refinery and related logistics assets for $75 million.
Ashford Hospitality Trust, Inc. AHT rose 5.3% to $5.15 in pre-market trading. Ashford Hospitality Trust shares jumped over 20% on Tuesday on above-average volume.
Medallia Inc MDLA rose 4.5% to $26.20 in pre-market trading after the company reported better-than-expected Q1 sales results.
Ambarella Inc AMBA rose 4.1% to $105.30 in pre-market trading after the company reported better-than-expected Q1 results and issued Q2 sales guidance above estimates.
Zoom Video Communications, Inc. ZM rose 2.1% to $334.49 in pre-market trading after the company reported upbeat results for its first quarter and lifted its forecast for the year.

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Check out these big penny stock gainers and losers

Losers

iRhythm Technologies, Inc. IRTC shares fell 13.4% to $66.01 in pre-market trading after the company reaffirmed guidance and announced CEO Michael Coyle to step down due to personal matters.
Byrna Technologies Inc BYRN fell 7.5% to $21.90 in pre-market trading after the company announced a proposed public offering of common stock.
SCYNEXIS, Inc. SCYX shares fell 5.7% to $9.40 in pre-market trading. SCYNEXIS, last week, reported a loss for its first quarter.
MoSys, Inc. MOSY fell 5.7% to $5.98 in pre-market trading after jumping over 20% on Tuesday.
HeadHunter Group PLC HHR fell 4.7% to $39.80 in pre-market trading after the company reported the launch of follow-on offering of 4.5 million ADSs.
Liquid Media Group Ltd. YVR fell 4.6% to $2.06 in pre-market trading after surging 14% on Tuesday.
Lizhi Inc. LIZI fell 4.1% to $7.23 in pre-market trading after reporting a Q1 loss.