6月13日收市後生效，上證50、滬深300、科創50等多條指數調整樣本股！
日前，中證指數有限公司宣佈將調整滬深300、中證500、中證1000、中證A50、中證A100、中證A500等指數樣本。
此次調整為指數樣本的定期例行調整，定期調整方案將於6月13日收市後正式生效。
根據指數規則，經指數專家委員會審議，滬深300指數更換7只樣本，軟通動力、中航成飛等調入指數；
中證500指數更換50只樣本，恒玄科技、百濟神州等調入指數；
中證1000指數更換100只樣本，萬辰集團、思瑞浦等調入指數；
中證A50指數更換4只樣本，北方稀土、東鵬飲料等調入指數；
中證A100指數更換5只樣本，中國重工、滬電股份等調入指數；
中證A500指數更換21只樣本，潤澤科技、恒玄科技等調入指數。
除以上指數之外，其他指數的樣本也將進行相應的調整。
本次樣本調整後，主要規模指數樣本契合資本市場結構變化和產業轉型升級趨勢，信息技術、通信服務、工業等行業樣本數量有所上升，對市場代表性進一步增強；中證A系列指數樣本行業分佈均衡，納入更多新興領域龍頭公司，對細分行業覆蓋度進一步提升。
滬深300指數中信息技術行業樣本數量增加2只，權重上升0.18%。中證500指數中信息技術行業樣本數量增加12只，權重上升1.82%；通信服務行業樣本數增加2只，權重上升0.27%。中證1000指數中，工業行業樣本數量增加10只，權重上升1.06%；可選消費行業樣本數量增加5只，權重上升0.93%。調整後科創板及創業板樣本數量分別為51只、124只、343只，權重分別為15.72%、25.83%、34.14%。
A系列指數行業分佈較傳統寬基指數更為均衡，中證A50權重佔比前三的中證一級行業分別為工業（19.83%）、金融（17.02%）、主要消費（14.53%）；中證A100指數中原材料、工業行業權重分別上升0.33%、0.12%；中證A500指數中新興行業佔比約46.5%，較調整前對新質生產力表徵性進一步提升。調整後，中證A50、中證A100和中證A500指數分別覆蓋30、28、35箇中證二級行業以及50、46、91箇中證三級行業，實現對各行業龍頭公司的均衡覆蓋。
從市值覆蓋率來看，滬深300、中證500和中證1000指數總市值覆蓋率分別為52.06%、14.77%和13.29%，中證A50、中證A100和中證A500指數總市值覆蓋率分別為16.19%、27.08%、52.78%。從基本面情況來看，滬深300、中證500和中證1000指數2024年報營業收入佔A股市場比為59.50%、15.45%、11.48%，淨利潤佔A股市場比為87.10%、9.00%、6.04%；中證A50、中證A100和中證A500指數2024年報營業收入佔A股市場比為18.56%、33.10%、62.17%，淨利潤佔A股市場比為20.94%、37.74%、72.64%。
從估值來看，按照5月28日收盤價計算，調整後的滬深300、中證500、中證1000、中證A50、中證A100、中證A500指數的滾動市盈率分別為12.26倍、21.38倍、25.46倍、16.48倍、13.89倍、13.50倍。
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