The flashing of some ominous technical reversal patterns should give technology investors reason to worry—just not enough to make them sell, as the sector’s recent weakness remains just a speed bump on the longer-term charts. The PowerShares QQQ Trust exchange-traded fund QQQ, +0.33% which tracks the technology-heavy Nasdaq 100 Index NDX, +0.31% tumbled 2.3% Monday to suffer a fifth-straight loss, the longest such streak since the nine-session stretch ending Nov. 4, 2016. All but 3 of the QQQ’s components lost ground, led by the 6.8% tumble in Facebook Inc. FB, -2.05% shares. The information technology sector carries a 61.2% weighting in the QQQs, compared with a 25.5% weighting in the SPDR S&P 500 ETF SPY, +0.07% which tracks the S&P 500 index. The QQQ’s selloff at Monday’s open created a downside gap in the charts, between Friday’s intraday low of $170.93 and Monday’s high of $169.22. Coupled with an upside gap between the March 8 intraday high of $169.98 and the March 9 low of $170.82, an “island reversal” pattern has formed to warn of a short-term top. via