周二大(da)盤(pan)震蕩下(xia)(xia)行，最終(zhong)滬深300指數收盤(pan)下(xia)(xia)跌(die)2.59%，期(qi)指走勢(shi)強于現貨(huo)走勢(shi)，其中，主力(li)合約收盤(pan)下(xia)(xia)跌(die)1.97%，升水幅度(du)增(zeng)加(jia)26.76點至(zhi)(zhi)31.70點，持(chi)倉(cang)量減(jian)(jian)(jian)(jian)(jian)少(shao)6015手(shou)(shou)(shou)(shou)(shou)至(zhi)(zhi)154446手(shou)(shou)(shou)(shou)(shou)。從主力(li)席位(wei)持(chi)倉(cang)變化(hua)情況看(kan)，多頭(tou)前20合計(ji)減(jian)(jian)(jian)(jian)(jian)倉(cang)93手(shou)(shou)(shou)(shou)(shou)，空(kong)(kong)頭(tou)前20合計(ji)減(jian)(jian)(jian)(jian)(jian)倉(cang)7582手(shou)(shou)(shou)(shou)(shou)，主力(li)凈(jing)空(kong)(kong)持(chi)倉(cang)減(jian)(jian)(jian)(jian)(jian)少(shao)2875手(shou)(shou)(shou)(shou)(shou)至(zhi)(zhi)14608手(shou)(shou)(shou)(shou)(shou)。具(ju)體(ti)席位(wei)上，中信期(qi)貨(huo)加(jia)倉(cang)582手(shou)(shou)(shou)(shou)(shou)多單(dan)(dan)并減(jian)(jian)(jian)(jian)(jian)倉(cang)1187手(shou)(shou)(shou)(shou)(shou)空(kong)(kong)單(dan)(dan)，凈(jing)空(kong)(kong)持(chi)倉(cang)減(jian)(jian)(jian)(jian)(jian)少(shao)1769手(shou)(shou)(shou)(shou)(shou)至(zhi)(zhi)1996手(shou)(shou)(shou)(shou)(shou)；國泰君安加(jia)倉(cang)700手(shou)(shou)(shou)(shou)(shou)多單(dan)(dan)并減(jian)(jian)(jian)(jian)(jian)倉(cang)635手(shou)(shou)(shou)(shou)(shou)空(kong)(kong)單(dan)(dan)，凈(jing)空(kong)(kong)持(chi)倉(cang)減(jian)(jian)(jian)(jian)(jian)少(shao)1335手(shou)(shou)(shou)(shou)(shou)至(zhi)(zhi)752手(shou)(shou)(shou)(shou)(shou)。綜合來看(kan)，多頭(tou)在前期(qi)高點附(fu)近(jin)遭遇空(kong)(kong)頭(tou)狙擊，而傳(chuan)統兩大(da)主力(li)減(jian)(jian)(jian)(jian)(jian)小(xiao)空(kong)(kong)單(dan)(dan)力(li)度(du)，或預示多空(kong)(kong)雙方短(duan)期(qi)還(huan)有爭奪。