Among stocks trading above a dollar, Los Angeles biopharmaceutical research and development oncology company CytRx was the week’s leading gainer. Shares rose 42 percent to close at $2.51 on Friday.

Ritter Pharmaceuticals Inc., a Century City purveyor of therapeutic treatments for gastrointestinal diseases, also had a healthy week. Shares rose 19% percent to close at $1.41.

Commerce furniture designer and manufacturer Nova LifeStyle Inc. was the week’s biggest loser. Shares fell 18 percent to close at $1.26.

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