Rigetti Computing's stock has been on an absolute tear over the past few weeks.Quantum computing pure-play stocks have been on an unbelievable run over the past few weeks. One year ago, Rigetti Computing (RGTI -3.01%) was essentially a penny stock, trading for less than $1 per share. Now, it's worth nearly $50 per share. A huge chunk of that growth has come recently, as Rigetti Computing traded for about $15 at the start of September. There have been numerous headlines that have driven Rigetti Computing's s ...