证券时报·数据宝统计，截至8月18日，市场融资融券余额为21023.09亿元，较前一交易日的20626.42亿元增加396.67亿元。当日京沪深市场融资买入额为3266.31亿元，前一交易日为2473.57亿元；当日的融券卖出量为1.04亿股，前一交易日为0.68亿股。从个券来看，融资方面，共有3712只个券出现融资买入，3716只个券出现融资偿还。其中，融资余额环比增幅前30和环比降幅前30的股票如下：（数据宝）
　　A股融资余额环比增加前30股一览
证券代码证券简称融资余额（万元）环比增长（%）占流通市值比例（%）涨跌幅(%)838924广脉科技3464.0794.331.914.01873223荣亿精密1109.1493.210.9719.02301560众捷汽车9399.0085.339.3716.00872808曙光数创21455.5580.771.1129.99688448磁谷科技30080.0569.869.6515.97688617惠泰医疗7545.5065.280.19-3.19832225利通科技9557.7762.263.7710.43834261一诺威1873.4255.390.685.29300939秋田微15859.4254.073.727.71871970大禹生物158.3446.430.233.42836717瑞星股份287.0545.710.503.60838837华原股份1558.4845.560.648.70873570坤博精工1817.7643.421.593.90002267陕天然气20639.0743.272.137.53300855图南股份24688.9843.212.691.79836699海达尔1210.8841.640.9730.00830839万通液压2309.3941.631.0211.84300854中兰环保6080.9540.384.158.82837092汉鑫科技1459.6539.741.024.30600563法拉电子40617.4439.191.530.09831039国义招标1390.9838.360.542.19300814中富电路34584.9038.023.5710.37920106林泰新材2688.3637.400.84-2.24688669聚石化学13596.8036.664.22-3.97301125腾亚精工6327.8336.612.64-3.55301565中仑新材16240.9636.595.206.23600208衢州发展127145.1036.142.80-2.55836221易实精密1631.6035.911.222.55301397溯联股份38304.7835.6511.035.59002549凯美特气37983.5835.333.202.76　　A股融资余额环比下降前30股一览
证券代码证券简称融资余额（万元）环比降幅（%）占流通市值比例（%）涨跌幅(%)836270天铭科技860.85-68.440.593.12830974凯大催化269.64-57.280.233.85873706铁拓机械2682.91-38.402.144.33838171邦德股份965.23-35.220.854.79832145恒合股份42.27-33.190.042.14870508丰安股份119.73-32.760.135.32301235华康洁净6548.88-30.432.7113.39920016中草香料827.47-28.161.252.36836547无锡晶海1051.54-27.711.123.09603803瑞斯康达9909.50-27.432.670.23430090同辉信息625.34-25.170.4512.20836942恒立钻具4417.30-24.682.142.40300133华策影视59965.92-24.213.9720.00002210飞马国际34516.41-22.234.23-0.97833427华维设计522.52-21.620.608.82872351华光源海804.37-21.420.782.11002657中科金财83190.01-21.026.379.99837046亿能电力581.07-20.830.703.24838262太湖雪377.77-20.440.453.03920101志高机械1069.42-20.380.95-0.27002383合众思壮31082.17-20.213.981.15688583思看科技8921.83-20.095.102.11873665科强股份576.64-19.620.583.95871245威博液压1048.79-19.520.833.50688600皖仪科技11284.52-18.213.53-1.21688127蓝特光学17276.29-16.571.327.01834407驰诚股份307.39-16.340.465.15688655迅捷兴15638.33-16.234.274.61003040楚天龙33194.32-15.992.71-1.03920007酉立智能500.71-15.830.602.64（文章来源：证券时报网）