Up on UPC $1.24/share on 20 shares, but greedily added 20 more, using $523 buying power on a $150 account. I should have sold into $17.42–17.62 resistance. Averaging up to $16.84 increased my risk from about $16 to $56, and I didn't recalculate it. The stock flushed, and I couldn't exit near $15.40. If adding, I should have waited for $18+ and used a stop-loss. Greed cost me the trade.