周三(san)大盤(pan)沖高(gao)后回落，最終(zhong)滬(hu)深300指數(shu)收盤(pan)下跌1.04%。期(qi)指走勢弱于現貨指數(shu)走勢，其中(zhong)(zhong)，主(zhu)力(li)合(he)(he)約收盤(pan)下跌1.64%，由(you)升水17.95點轉為貼水9.77點，持(chi)(chi)(chi)倉量增(zeng)加(jia)(jia)2328手(shou)(shou)至117899手(shou)(shou)。從主(zhu)力(li)席(xi)位(wei)持(chi)(chi)(chi)倉變化情況(kuang)看，多(duo)(duo)頭前(qian)(qian)20合(he)(he)計加(jia)(jia)倉2728手(shou)(shou)，空(kong)頭前(qian)(qian)20合(he)(he)計加(jia)(jia)倉5466手(shou)(shou)，主(zhu)力(li)凈(jing)空(kong)持(chi)(chi)(chi)倉增(zeng)加(jia)(jia)1801手(shou)(shou)至11149手(shou)(shou)。具體席(xi)位(wei)上，中(zhong)(zhong)信(xin)期(qi)貨加(jia)(jia)倉2177手(shou)(shou)多(duo)(duo)單并減倉2848手(shou)(shou)空(kong)單，由(you)凈(jing)空(kong)持(chi)(chi)(chi)倉4881手(shou)(shou)轉為凈(jing)多(duo)(duo)持(chi)(chi)(chi)倉144手(shou)(shou)；海通期(qi)貨減倉2786手(shou)(shou)多(duo)(duo)單并加(jia)(jia)倉708手(shou)(shou)空(kong)單，凈(jing)空(kong)持(chi)(chi)(chi)倉增(zeng)加(jia)(jia)3494手(shou)(shou)至6233手(shou)(shou)。此外，國泰(tai)君安凈(jing)空(kong)持(chi)(chi)(chi)倉減少251手(shou)(shou)至4146手(shou)(shou)，永安期(qi)貨凈(jing)多(duo)(duo)持(chi)(chi)(chi)倉增(zeng)加(jia)(jia)1479手(shou)(shou)至4572手(shou)(shou)。綜(zong)合(he)(he)來看，中(zhong)(zhong)信(xin)期(qi)貨、國泰(tai)君安等前(qian)(qian)幾(ji)天(tian)主(zhu)空(kong)的席(xi)位(wei)增(zeng)加(jia)(jia)多(duo)(duo)單力(li)度，在降準利好的幫助下，多(duo)(duo)頭將展開反(fan)擊，但在關鍵點位(wei)空(kong)頭或(huo)反(fan)撲。