证券时报·数据宝统计，截至7月31日，市场融资融券余额为19848.27亿元，较前一交易日的19847.48亿元增加0.79亿元。当日京沪深市场融资买入额为2046.95亿元，前一交易日为1944.79亿元；当日的融券卖出量为0.94亿股，前一交易日为0.78亿股。从个券来看，融资方面，共有3707只个券出现融资买入，3711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(%)830974凯大催化731.95120.580.63-3.64831768拾比佰887.6864.381.00-1.28301200大族数控54408.2642.1411.279.76002401中远海科70622.4938.558.383.04601869长飞光纤30884.1737.131.494.59837344三元基因3647.8836.290.93-4.75839725惠丰钻石1847.9634.911.510.14300149睿智医药25525.4534.543.613.56001367海森药业10622.7031.9310.343.71300869康泰医学22955.6731.084.381.07688136科兴制药31638.3029.272.9513.15838030德众汽车1646.7329.171.91-2.19000921海信家电47059.0627.412.00-5.55430425乐创技术1471.0426.391.09-3.87688700东威科技45514.8026.083.206.93300965恒宇信通4315.7224.503.17-5.80688020方邦股份13493.9623.302.932.12871634新威凌1130.7423.291.03-1.01300005探路者14331.4922.361.86-1.36301316慧博云通90796.3321.777.9313.31836892广咨国际1056.8021.700.39-6.09300267尔康制药31703.8221.664.754.92002017东信和平86482.7721.556.001.89834950迅安科技516.2621.470.58-0.13873152天宏锂电849.0620.070.64-2.57603229奥翔药业37705.4419.903.9110.05688720艾森股份13402.8819.825.450.07301662宏工科技12619.2719.687.491.76301395仁信新材3076.2719.161.910.86301512智信精密5191.8819.144.82-1.90　　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(%)871857泓禧科技262.06-31.450.181.05873527夜光明508.55-31.160.65-0.28872392佳合科技286.96-27.660.220.00836717瑞星股份122.66-23.640.22-3.90430564天润科技881.28-22.280.82-4.19920682球冠电缆2060.07-20.501.07-2.49832471美邦科技233.28-20.050.28-1.31603273天元智能5358.80-19.984.5310.02688565力源科技4627.79-19.193.09-2.25600968海油发展20055.84-18.960.49-1.46835892中科美菱582.41-18.830.93-0.88430017星昊医药2833.45-18.530.928.03872931无锡鼎邦320.71-17.700.61-3.69836263中航泰达1073.31-17.690.67-6.96301070开勒股份11374.69-17.334.261.26300938信测标准26490.24-17.257.232.31832145恒合股份36.05-17.060.030.37688702盛科通信9404.62-16.900.681.16301097天益医疗3814.93-16.734.58-0.79301150中一科技12592.65-16.663.7411.69301326捷邦科技10416.59-16.354.7013.89871642通易航天1465.71-15.810.740.51002370亚太药业18441.79-15.803.67-6.14832876慧为智能1315.21-15.631.040.12002097山河智能49750.49-15.433.50-3.50688361中科飞测16871.22-15.300.77-3.14600010包钢股份216668.20-15.272.57-7.88688307中润光学8222.65-15.163.670.55688084晶品特装14463.18-14.974.04-2.62688081兴图新科3790.29-14.871.720.19（文章来源：证券时报网）