The realization of carbon peaking and “Carbon Neutrality” has become one of the main goals of government and enterprise reform. Based on data from the “Carbon Neutrality” concept plate from iFinD, this paper empirically analyzes the supporting role of the capital market on the macro policy release, studies the feedback of the capital market on this policy goal, and gives an empirical explanation of the policy effect based on various order trading data and social attention data. The findings show that, compared with the control group of stocks with similar characteristics, “Carbon Neutrality” concept stocks have significantly positive return performances after the announcement of the dual carbon goal, and this positive feedback occurs in advance. Further, trading data form different kinds of orders play heterogeneous roles in the policy effect. The positive return feedback of “Carbon Neutrality” concept stocks mainly comes from the superlarge trades, which appears after the policy is announced and before the concept stocks are launched. In contrast, medium and small trades fail to play a supporting role, revealing the essential role of institutional investors. Additionally, sociallevel attention also plays a vital role in the feedback on the dual carbon policy. Baidu searchindex data can significantly improve the return of “Carbon Neutrality” concept stocks, strengthen the significant positive impact of superlarge trades, and speed up information absorption. To sum up, this paper reports the positive feedback of the capital market on the national macro policies and reveals the essential role of superlarge orders in the market. The findings are important to encourage enterprises to develop and expand doublecarbonrelated initiatives and ultimately achieve the joint promotion of the capital market and the real economy.