After-Hours Movers Led By H & R Block, Ambarella, Wright Medical Group & Guidewire Software

Shares of Ambarella Inc AMBA fell 6.3 percent on Tuesday trading, ahead of the announcement of the company’s second quarter (fiscal 2016) financial results, scheduled for after the market closed.

Following the call, the stock continued to tumble, and is down about 1.4 percent in after-hours trading, although earnings came in at $0.88 per share and revenue, at $84.19 million, ahead of the Street’s estimate of $0.81 per share and $82.75 million -- Estimize.

H & R Block Inc HRB, which also fell (3.04 percent) during the regular trading session, ahead of its earnings report, rose more than 7.3 percent since the bell rang. The accounting and tax preparation firm retrieved a net loss of ($0.35) per share on revenue of $137.72 million, well ahead of the Street’s consensus, which called for a net loss of ($0.41) per share on revenue of $136.44 million.

Also falling on its earnings report like Ambarella is Guidewire Software Inc

GWRE,which has lost more than 5 percent since the market closed. The mid-cap software provider reported earnings of $0.35 per share on revenue of $12.92 million, widely surpassing guidance and consensus estimates. However, the stock is declining on poor guidance for the upcoming quarter and full fiscal 2016.

Wright Medical Group Inc WMGI WMGIZ, for its part, is the biggest gainer in Tuesday’s after-hours. Its WMGI stock is up more than 10 percent since the bell rang, and the WMGIZ shares, up almost 25 percent.

The surge was triggered by the announcement of the FDA approval for AUGMENT^® Bone Graft.

According to a press release issued on Tuesday afternoon, AUGMENT^® Bone Graft is the “First Clinically Proven, Cost-Effective Alternative to Autograft for Ankle and/or Hindfoot Fusion Indications.” Wright Medical Group will now be able to sell –commercially- and distribute AUGMENT Bone Graft in the U.S.