证券时报·数据宝统计，截至8月21日，市场融资融券余额为21467.95亿元，较前一交易日的21475.69亿元减少7.74亿元。当日京沪深市场融资买入额为2611.55亿元，前一交易日为2643.76亿元；当日的融券卖出量为1.36亿股，前一交易日为1.32亿股。从个券来看，融资方面，共有3714只个券出现融资买入，3717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(%)872931无锡鼎邦766.26145.981.38-2.23920118太湖远大935.90130.341.500.04603626科森科技48826.7352.236.349.99301108洁雅股份4960.9647.312.5410.23600590泰豪科技46576.1544.474.42-3.03301002崧盛股份6927.5443.693.1411.64301369联动科技13867.7239.198.263.23688718唯赛勃5594.7238.841.9010.91688351微电生理10050.7236.363.01-0.85301189奥尼电子8713.3036.232.065.43688178万德斯8630.4335.973.894.99001390古麒绒材10091.7634.558.05-2.85002369卓翼科技33243.5232.915.5610.00002635安洁科技34373.0530.895.70-2.93300893松原安全8529.2229.721.596.16871245威博液压1490.1629.671.13-7.59688657浩辰软件8839.3629.433.74-6.68836270天铭科技682.1328.200.461.67002468申通快递58835.3227.162.062.47830839万通液压6218.3126.622.03-10.55002729好利科技19458.3726.617.022.66301295美硕科技10239.9226.3112.881.08835179凯德石英4920.7125.582.050.38301448开创电气7923.2825.434.435.77300057万顺新材23549.9024.524.9510.91838810春光智能539.3524.360.502.37832876慧为智能1640.4524.251.125.74300949奥雅股份4704.6523.823.084.82301210金杨股份18732.2723.769.104.99831195三祥科技2416.4623.631.562.96　　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(%)832651天罡股份587.40-50.891.130.38836942恒立钻具3047.59-33.601.58-2.74873132泰鹏智能260.10-33.360.38-0.28831641格利尔298.09-31.390.321.01836717瑞星股份174.98-28.230.30-1.05872392佳合科技275.21-27.990.18-2.46837403康农种业2107.26-26.871.384.15871970大禹生物121.61-24.010.171.46870299灿能电力775.02-23.500.831.32920027交大铁发1472.74-22.041.760.79301273瑞晨环保3572.00-21.403.49-0.27870204沪江材料1644.58-21.301.43-1.20834475三友科技1220.24-21.111.28-1.39001335信凯科技6860.31-20.257.54-1.37301338凯格精机19095.99-19.998.45-2.78832278鹿得医疗855.70-19.530.97-1.10688337普源精电9722.22-19.203.65-4.18301398星源卓镁13339.86-18.507.95-8.43835207众诚科技1260.06-18.420.73-1.38832419路斯股份1540.00-18.350.700.30835508殷图网联511.88-18.340.540.83002553南方精工41138.35-18.295.04-1.36835857百甲科技677.65-18.240.75-1.02870726鸿智科技803.41-18.160.56-1.44838262太湖雪444.15-18.100.51-0.22301161唯万密封18697.82-17.797.81-1.25000539粤电力A20133.73-17.661.660.42301413安培龙26389.94-17.604.070.60836414欧普泰279.78-17.160.33-1.27870866绿亨科技784.21-17.040.810.49（文章来源：证券时报网）