光華講壇——社會(huì)名流與企業(yè)家論壇第6503期
主題:做空活動(dòng)中的戰(zhàn)略性公告 Strategic Announcements in Short-Selling Campaigns
主講人:香港中文大學(xué)(深圳)經(jīng)管學(xué)院 陳鏡璇助理教授
主持人:西南財(cái)經(jīng)大學(xué)金融研究院 牛子龍副教授
時(shí)間:4月25日 14:00-15:30
地點(diǎn):光華校區(qū)35棟金融研究院202會(huì)議室
主辦單位:金融研究院 科研處
主講人簡(jiǎn)介:
陳鏡璇,香港中文大學(xué)(深圳)經(jīng)管學(xué)院助理教授。陳鏡璇在倫敦政治經(jīng)濟(jì)學(xué)院(LSE)獲得金融學(xué)博士學(xué)位,在中國(guó)人民大學(xué)獲得金融學(xué)碩士學(xué)位,在北京大學(xué)獲得數(shù)學(xué)學(xué)士學(xué)位。她還是倫敦政治經(jīng)濟(jì)學(xué)院金融市場(chǎng)小組和保羅-伍利中心的學(xué)者。她的主要研究領(lǐng)域是金融中介、信息經(jīng)濟(jì)學(xué)和資產(chǎn)定價(jià),目前的研究方向是金融市場(chǎng)中通過(guò)通信和交易進(jìn)行的信息傳遞。她的論文被國(guó)際重要學(xué)術(shù)會(huì)議邀請(qǐng),如AFA、EFA、SFS Cavalcade NA、EEA-ESEM等。
內(nèi)容提要:
本文研究了對(duì)沖基金在做空活動(dòng)期間如何戰(zhàn)略性地披露其私人信息。利用歐盟市場(chǎng)上對(duì)沖基金的自愿公告和每日做空頭寸的數(shù)據(jù),我記錄了兩類(lèi)基金的存在:公告者和跟隨者。公告者通常是規(guī)模較小且年輕的基金:(1)建立做空頭寸;(2)發(fā)布關(guān)于做空目標(biāo)的研究報(bào)告;(3)并在短時(shí)間內(nèi)從價(jià)格下跌中獲利。跟隨者通常是規(guī)模較大的基金,在報(bào)告發(fā)布后進(jìn)入市場(chǎng),并在公告者退出后增加其做空頭寸。為了理解做空者之間的戰(zhàn)略互動(dòng),我提供了一個(gè)模型來(lái)解釋規(guī)模如何影響做空者的激勵(lì)和行為。在面臨杠桿約束時(shí),規(guī)模較小的基金更多地受益于披露。相反,規(guī)模較大的基金通過(guò)向價(jià)格發(fā)現(xiàn)提供資金,從他人的私人信息中獲利。我描述了這種做空活動(dòng)對(duì)市場(chǎng)效率的影響,并確認(rèn)了模型預(yù)測(cè),即具有較低借貸成本和較大錯(cuò)誤定價(jià)的股票更有可能被對(duì)沖基金公告。
I study how hedge funds strategically disclose their private information during short-selling campaigns. Using data on hedge funds' voluntary announcements and daily short positions in the EU market, I document the existence of two groups of funds: Announcers and Followers. Announcers, typically small and young, (1) establish short positions, (2) publish research reports about short targets, and (3) realise profits from the falling price within a short time frame. Followers, usually large, enter at the release of the report and increase their short positions even after announcers exit. To understand the strategic interaction among short sellers, I provide a model to explain how size affects a short seller’s incentive and behaviour. Small funds benefit more from disclosing when facing binding leverage constraints. In contrast, large funds profit from others’ private information by offering capital to price discovery. I characterize the effect of such short-selling campaigns on market efficiency and confirm the model prediction that stocks with lower borrowing costs and larger mispricing are more likely to be announced by hedge funds.