 Janus Henderson Group PLC grew its holdings in shares of SPS Commerce, Inc. NASDAQ:SPSC by 0.8 during the 1st quarter, HoldingsChannel.com reports. The firm owned 25,290 shares of the software makers stock after buying an additional 194 shares during the period. Janus Henderson Group PLCs holdings in SPS Commerce were worth 1,176,000 as of its ... 