Let's check on the charts and indicators.
In the daily bar chart of NOK, below, we can see that the shares have been bottoming since September. Dips below $4 have been bought and prices turned higher in late April. NOK is trading above the rising 50-day moving average line and the rising 200-day moving average line.
The On-Balance-Volume (OBV) line shows strength from early November and again from early March. Buyers of NOK have been more aggressive and this helps to confirm the price gains. The Moving Average Convergence Divergence (MACD) oscillator is in a bullish alignment above the zero line.