In order to reveal similarities and differences in time-series, finding underlying hidden trends, can be thought as all trends which are explaining a whole timeseries set, is very important. In the project, with the help of decompose a mixture data via Non-negative matrix factorization (NMF), time series into its constitute parts, the underlying trends extraction is tried to achieve. After NMF reveals underlying trends (bases), resulting encodings become prepared for clustering with k-Means algorithm.