近日,華中農(nóng)業(yè)大學(xué)經(jīng)濟(jì)管理學(xué)院農(nóng)業(yè)產(chǎn)業(yè)與技術(shù)經(jīng)濟(jì)團(tuán)隊(duì)發(fā)表了關(guān)于農(nóng)產(chǎn)品期貨市場的價(jià)格發(fā)現(xiàn)功能的研究成果。該研究基于三種平均價(jià)格發(fā)現(xiàn)貢獻(xiàn)度量方法,以及動(dòng)態(tài)價(jià)格發(fā)現(xiàn)度量方法,研究了中國農(nóng)產(chǎn)品期貨市場的價(jià)格發(fā)現(xiàn)功能及農(nóng)業(yè)政策、交易量對(duì)價(jià)格發(fā)現(xiàn)的影響。研究成果以“Dynamic price discovery in Chinese agricultural futures markets”為題在Journal of Asian Economics發(fā)表。
隨著國家經(jīng)濟(jì)的快速發(fā)展和金融市場的不斷完善,我國期貨市場取得了巨大的進(jìn)展。經(jīng)過20多年的發(fā)展,中國兩個(gè)主要的農(nóng)產(chǎn)品期貨交易所——大連商品交易所和鄭州商品交易所,目前已上市二十六個(gè)農(nóng)產(chǎn)品期貨品種,涵蓋了糧、油、棉、糖、蛋等重要農(nóng)產(chǎn)品。2018 年,大商所和鄭商所的總交易額分別達(dá)到52.2和38.22萬億元人民幣。作為世界第二大經(jīng)濟(jì)體和主要農(nóng)產(chǎn)品進(jìn)口國,中國農(nóng)產(chǎn)品期貨市場的發(fā)展以及不斷增長的市場份額,使其在全球范圍內(nèi)具有重要影響。然而,已有研究多關(guān)注我國農(nóng)產(chǎn)品期貨市場的平均價(jià)格發(fā)現(xiàn)貢獻(xiàn)率,尚未充分探索我國農(nóng)產(chǎn)品期貨市場價(jià)格發(fā)現(xiàn)功能如何隨時(shí)間變化。中國農(nóng)產(chǎn)品期貨市場在過去二十多年經(jīng)歷了顯著的改善和巨大的變化,在此背景下,僅關(guān)注價(jià)格發(fā)現(xiàn)的平均貢獻(xiàn)率可能會(huì)損失有用信息,甚至得到誤導(dǎo)性結(jié)論。
該研究基于三種成熟的平均價(jià)格發(fā)現(xiàn)貢獻(xiàn)度量方法,以及動(dòng)態(tài)價(jià)格發(fā)現(xiàn)度量方法,研究了中國農(nóng)產(chǎn)品期貨市場在價(jià)格發(fā)現(xiàn)過程中的作用?;?4 種農(nóng)產(chǎn)品的日度期貨和現(xiàn)貨價(jià)格,發(fā)現(xiàn) 11個(gè)農(nóng)產(chǎn)品期貨品種有效發(fā)揮了價(jià)格發(fā)現(xiàn)功能。此外,以市場化為導(dǎo)向的政策變化增強(qiáng)了大多數(shù)期貨品種的價(jià)格發(fā)現(xiàn)功能,但嚴(yán)重依賴國外進(jìn)口的農(nóng)產(chǎn)品除外。該研究的結(jié)果還表明,對(duì)于成交十分低迷的合約,交易量在決定期貨市場是否能有效發(fā)揮價(jià)格發(fā)現(xiàn)功能方面尤其重要。該研究使用平均和動(dòng)態(tài)價(jià)格發(fā)現(xiàn)貢獻(xiàn)度量方法,為評(píng)估我國農(nóng)產(chǎn)品期貨市場的效率提供了一個(gè)綜合判斷。其結(jié)果也表明,農(nóng)產(chǎn)品現(xiàn)貨市場的市場化改革有助于加強(qiáng)期貨市場的定價(jià)能力。
華中農(nóng)業(yè)大學(xué)經(jīng)濟(jì)管理學(xué)院博士研究生李苗為論文第一作者,我校經(jīng)濟(jì)管理學(xué)院熊濤教授為論文通訊作者。該研究得到了國家自然科學(xué)基金項(xiàng)目(71771101)的資助。
英文摘要:
Research has not fully explored how Chinese agricultural futures markets perform their price discovery function over time. Our paper examines the role of Chinese agricultural futures markets in the price discovery process based on three well-established measurements of average price discovery contribution, and more importantly, the dynamic price discovery measurement. Using daily futures and spot prices from fourteen agricultural commodities, we find eleven contracts are efficient in price discovery. Besides, market-oriented changes in policies strengthen the price discovery performance of most futures markets, except for commodities that rely heavily on imports from other countries. Our results also suggest that trading activity is particularly important in determining whether thinly traded contracts are efficient in price discovery. Our paper provides a comprehensive judgment involving both average and dynamic price discovery contribution measurements on assessing the efficiency of Chinese agricultural futures markets. Our results might also serve as a reminder that market-oriented reforms in the spot markets of commodities might be useful to intensify the pricing power of the futures markets.
論文鏈接:https://www.sciencedirect.com/science/article/pii/S1049007821000993?dgcid=author