科技股空头终于开始投降了 They had been net short Nasdaq-100 futures for 28 straight weeks -- the longest stretch since the global financial crisis. The streak broke last week as the 100-member index clocked its 40th record for the year. Hedge funds’ push to buy about 7,000 futures contracts was nothing to write home about, but it tipped the positioning scale to net long for the first time since late February.