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題名 探究外資買賣超是否具有資訊內涵—臺灣股票市場的實證分析
Exploring the Information Content of Large Transactions of Net Buys/Sells from Foreign Institutional Investors — Evidence from the Taiwan Stock Market
作者 黃秋玲
Huang, Chiu-Ling
貢獻者 洪福聲
Hung, Fu-Sheng
黃秋玲
Huang, Chiu-Ling
關鍵詞 事件研究法
異常報酬率
Event Study
Abnormal Returns
日期 2024
上傳時間 5-Aug-2024 12:55:50 (UTC+8)
摘要 本文以事件研究法 (event study) 探究我國集中交易市場,自2008 年起至2023 年止,外資巨額交易的個股量能變化、持股比率變化和正負異常報酬率之間的關係,並比較外資買、賣超個股在不同產業間之異常報酬率的差異,以瞭解上述各項數據是否具有資訊內涵,得以做為投資參考的指標。因異常報酬率標準化可提高檢定能力,故本研究將樣本的異常報酬率都予以標準常態分配,並檢視各期的標準化平均異常報酬率 (SAR) 及標準化累計平均異常報酬率 (SCAR) 是否顯著異於0。 主要結果如下:首先,買超類各組別中,因「金融股」於訊息公布後持續正異常報酬率至次16日達最大正值,其資訊內涵效果最大,可供投資人做為投資參考標的。「買超張數組」於訊息公布後持續正異常報酬率至次2日達最大正值,可供偏好1、2天短線操作的投資人參考。再則,賣超類各組別中,因「電子股」於訊息公布後持續負異常報酬率至次11日達最大負值,其資訊內涵效果最大,可供投資人做為投資決策參考項目。最低「總持股比率組」,於訊息公布後持續負異常報酬率至次2日達最大負值,可供偏好1、2 天短線操作的投資人之觀察指標。總體而言,除了上述4組以外,外資無論是買超或賣超,對於預測未來股價趨勢的能力並不顯著,投資人無法藉由追蹤外資動向而獲得超額報酬。並且,外資交易的個股中,若屬成交量低的非主流股,其異常報酬率走勢與外資交易方向呈現負向關係。
This study uses the event study methodology to explore the relationship between the trading volume changes, changes in shareholding ratios, and abnormal returns of stocks with significant foreign capital transactions in Taiwan's centralized trading market from 2008 to 2023. Additionally, it compares the differences in abnormal returns of stocks with significant foreign capital buy and sell transactions across different industries to determine whether these data points contain informational value that could serve as investment reference indicators. Since the standardization of abnormal returns can enhance test power, this study normalizes the abnormal returns of the samples to a standard normal distribution and examines whether the standardized average abnormal returns (SAR) and the standardized cumulative average abnormal returns (SCAR) for each period are significantly different from zero. The empirical results of this study suggest the following: First, among the groups with net buy transactions, "financial stocks" demonstrated the most substantial informational content effect, with positive abnormal returns continuing up to the 16th day after the information disclosure, reaching their maximum positive value. This can serve as an investment reference for investors. The "net buy volume group" showed continuous positive abnormal returns up to the 2nd day after the information disclosure, reaching their maximum positive value, which can be a reference for investors preferring short-term operations of 1-2 days. Secondly, among the groups with net sell transactions, "electronics stocks" exhibited the most substantial informational content effect, with negative abnormal returns continuing up to the 11th day after the information disclosure, reaching their maximum negative value. This can serve as a decision-making reference for investors. The lowest "total shareholding ratio group" showed continuous negative abnormal returns up to the 2nd day after the information disclosure, reaching their maximum negative value, which can be an observation indicator for investors favoring short-term operations of 1-2 days. In conclusion, apart from the four groups mentioned above, foreign capital transactions, whether net buy or net sell, do not significantly predict future stock price trends. Investors cannot achieve excess returns by tracking foreign capital movements. Additionally, for stocks with low trading volumes that are not mainstream, the trend of abnormal returns tends to have a negative relationship with the direction of foreign capital transactions.
參考文獻 王子湄、蕭朝興 (2008) 。台灣股市三大法人委託型態與價格行為的實證分析。管理與系統,15(1),55-92。 李志宏、周冠男、謝育慈、林秋發 (2006) 。亞洲金融風暴前後外資交易行為與台灣股市互動關係之研究。 證券市場發展季刋,18(3), 47-72。 李顯儀、陳信宏、張志豪、莊英俊 (2012) 。美國次級房貸金融危機期間台灣股票市場外資交易行為研究。輔仁管理評論, 19(2)。 沈中華、李建然 (2000) 。事件研究法-財務與會計實證研究必備 (第一版)。 華泰文化。 周建新、簡淑敏 (2008) 。臺灣與國際股市極端值報酬相關性之研究。交大管理學報,28(1),205-250。 林福來、陳玉芬、白凱任 (2012) 。以滾動因果檢定法探討外資交易與股、匯市之動態關係。台灣金融財務季刊, 13(4), 079-105。 邱瑞琴、黃睦芸 (2011) 。開放外資及陸資投資國內證券市場發展史。證券暨期貨月刋,29(10),5-16。 邱麗卿 (2016) 。現金增資宣告期間的外資交易行為。中華管理評論國際學報,19(2)。 姜淑美、鄭婉秀、邱建良 (2003) 。外資交易行為、股市及匯市動態關係之研究。風險管理學報, 5(1), 45-64。 洪萬吉、鄭文傑 (2007) 。外資成交金額波動對台灣股票市場報酬之衝擊:Student's t分配與雙門檻-GARCH模型之應用。 Journal of Data Analysis,2(5),1-18。 高子荃、林楚雄、高偉舜 (2016) 。美國與國際股市之極值相依行為:極值連鎖理論的應用。應用經濟論叢,99,83-136。 郭敏華、紀鈞中 (2000) 。亞洲金融風暴前後外資投資行為暨報酬差異之探討。 管理評論, 19(1),81-118。 廖彥豪 (2006) 。三大機構投資人買賣超與台灣加權股價指數互動關係之研究。 南華大學財務管理研究所碩士論文。 歐婉如 (2009) 。匯率、外資買賣超與臺灣股價關係之研究。國立政治大學行政管理碩士學程碩士論文。 盧陽正、翁振益、方豪 (2008) 。臺灣股市三大法人持股調整、群聚效應、回饋交易、串流行為與群聚之動量持續性。管理與系統, 15(4),523-543。 蕭朝興、尤靜華、李家華 (2013) 。台灣股市機構投資人之交易策略和股票報酬。證券市場發展季刊,25(2),55-95。 蕭朝興、黃聖棠、黃聖志 (2008) 。臺灣股市外資之投資行爲。商管科技季刊, 9(4),547-573。 薛舜仁 (2004) 。專業外資(QFII)買賣超與我國股市、期貨市場的關聯性研究。 正修學報, 17,189-208。 謝中琮、李淑麗 (2001) 。國際資金流動對我國股票市場的影響。經濟研究年刋, 200203(2), 272-296。 類惠貞、李家豪與莊淨琳 (2008) 。壓力衝擊環境下之機構投資人從眾行爲-以台灣股票市場爲例。國立臺中技術學院學報, 9(1), 109-129。 Bae, S.C., Min, J.H., & Jung, S. (2011). Trading behavior, performance, and stock preference of foreigners, local institutions, and individual investors: Evidence from the Korean stock market. Asia‐Pacific Journal of Financial Studies, 40(2),199-239. Ball, R., & Finn, J.F. (1989). The effect of block transactions on share prices: Australian evidence. Journal of Banking & Finance, 13(3), 397-419. Boehmer, E., Masumeci, J., & Poulsen, B.A. (1991). Event-study methodology under conditions of event-induced variance. Journal of Financial Economics, 30(2), 253-272. Bowman, R.G. (1983). Understanding and conducting event studies. Journal of Business Finance & Accounting, 10(4), 561-584. Chan, K.C.L., & Lakonishok, J. (1995). The behavior of stock prices around institutional trades. The Journal of Finance, 50(4), 1147-1174. Close, N. (1975). Price reaction to large transactions in the Canadian equity markets. Financial Analysts Journal, 31(6), 50-57. Henderson, Jr, & Glenn, V. (1990). Problems and solutions in conducting event studies. The Journal of Risk and Insurance, 57(2), 282-306. Iwatsubo, K., & Watkins, C. (2021). The changing role of foreign investors in Tokyo stock price formation. Pacific-Basin Finance Journal, 67, 101548. Lakonishok, J., Shleifer, A., & Vishny, W.R. (1992). The impact of institutional trading on stock prices. Journal of Financial Economics, 32(1), 23-43. Marsh, T.A., & Wagner, N. (2003). Return-volume dependence and extremes in international equity markets. Research Program in Finance Working Paper, RPF-293 Vo, X.V. (2017). Trading of foreign investors and stock returns in an emerging market - Evidence from Vietnam. International Review of Financial Analysis, 52, 88-93. Wagner, N., & Marsh, T.A. (2005). Surprise volume and heteroskedasticity in equity market returns. Quantitative Finance, 5(2), 153-168. Ziebart, D.A. (1985). Control of beta reliability in studies of abnormal return magnitudes: A methodological note. Journal of Accounting Rresearch, 23(2), 920-926.
描述 碩士
國立政治大學
行政管理碩士學程
110921058
資料來源 http://thesis.lib.nccu.edu.tw/record/#G0110921058
資料類型 thesis
dc.contributor.advisor 洪福聲zh_TW
dc.contributor.advisor Hung, Fu-Shengen_US
dc.contributor.author (Authors) 黃秋玲zh_TW
dc.contributor.author (Authors) Huang, Chiu-Lingen_US
dc.creator (作者) 黃秋玲zh_TW
dc.creator (作者) Huang, Chiu-Lingen_US
dc.date (日期) 2024en_US
dc.date.accessioned 5-Aug-2024 12:55:50 (UTC+8)-
dc.date.available 5-Aug-2024 12:55:50 (UTC+8)-
dc.date.issued (上傳時間) 5-Aug-2024 12:55:50 (UTC+8)-
dc.identifier (Other Identifiers) G0110921058en_US
dc.identifier.uri (URI) https://nccur.lib.nccu.edu.tw/handle/140.119/152605-
dc.description (描述) 碩士zh_TW
dc.description (描述) 國立政治大學zh_TW
dc.description (描述) 行政管理碩士學程zh_TW
dc.description (描述) 110921058zh_TW
dc.description.abstract (摘要) 本文以事件研究法 (event study) 探究我國集中交易市場,自2008 年起至2023 年止,外資巨額交易的個股量能變化、持股比率變化和正負異常報酬率之間的關係,並比較外資買、賣超個股在不同產業間之異常報酬率的差異,以瞭解上述各項數據是否具有資訊內涵,得以做為投資參考的指標。因異常報酬率標準化可提高檢定能力,故本研究將樣本的異常報酬率都予以標準常態分配,並檢視各期的標準化平均異常報酬率 (SAR) 及標準化累計平均異常報酬率 (SCAR) 是否顯著異於0。 主要結果如下:首先,買超類各組別中,因「金融股」於訊息公布後持續正異常報酬率至次16日達最大正值,其資訊內涵效果最大,可供投資人做為投資參考標的。「買超張數組」於訊息公布後持續正異常報酬率至次2日達最大正值,可供偏好1、2天短線操作的投資人參考。再則,賣超類各組別中,因「電子股」於訊息公布後持續負異常報酬率至次11日達最大負值,其資訊內涵效果最大,可供投資人做為投資決策參考項目。最低「總持股比率組」,於訊息公布後持續負異常報酬率至次2日達最大負值,可供偏好1、2 天短線操作的投資人之觀察指標。總體而言,除了上述4組以外,外資無論是買超或賣超,對於預測未來股價趨勢的能力並不顯著,投資人無法藉由追蹤外資動向而獲得超額報酬。並且,外資交易的個股中,若屬成交量低的非主流股,其異常報酬率走勢與外資交易方向呈現負向關係。zh_TW
dc.description.abstract (摘要) This study uses the event study methodology to explore the relationship between the trading volume changes, changes in shareholding ratios, and abnormal returns of stocks with significant foreign capital transactions in Taiwan's centralized trading market from 2008 to 2023. Additionally, it compares the differences in abnormal returns of stocks with significant foreign capital buy and sell transactions across different industries to determine whether these data points contain informational value that could serve as investment reference indicators. Since the standardization of abnormal returns can enhance test power, this study normalizes the abnormal returns of the samples to a standard normal distribution and examines whether the standardized average abnormal returns (SAR) and the standardized cumulative average abnormal returns (SCAR) for each period are significantly different from zero. The empirical results of this study suggest the following: First, among the groups with net buy transactions, "financial stocks" demonstrated the most substantial informational content effect, with positive abnormal returns continuing up to the 16th day after the information disclosure, reaching their maximum positive value. This can serve as an investment reference for investors. The "net buy volume group" showed continuous positive abnormal returns up to the 2nd day after the information disclosure, reaching their maximum positive value, which can be a reference for investors preferring short-term operations of 1-2 days. Secondly, among the groups with net sell transactions, "electronics stocks" exhibited the most substantial informational content effect, with negative abnormal returns continuing up to the 11th day after the information disclosure, reaching their maximum negative value. This can serve as a decision-making reference for investors. The lowest "total shareholding ratio group" showed continuous negative abnormal returns up to the 2nd day after the information disclosure, reaching their maximum negative value, which can be an observation indicator for investors favoring short-term operations of 1-2 days. In conclusion, apart from the four groups mentioned above, foreign capital transactions, whether net buy or net sell, do not significantly predict future stock price trends. Investors cannot achieve excess returns by tracking foreign capital movements. Additionally, for stocks with low trading volumes that are not mainstream, the trend of abnormal returns tends to have a negative relationship with the direction of foreign capital transactions.en_US
dc.description.tableofcontents 第一章 緒論 1 第一節 研究背景與目的 1 第二節 研究方法與架構 4 第二章 文獻回顧 6 第三章 研究方法 10 第一節 事件研究法 10 第二節 研究範圍 17 第四章 實證結果與分析 23 第一節 買超類 23 第二節 賣超類 34 第三節 實證分析 45 第五章 結論 49 參考文獻 52zh_TW
dc.format.extent 5600487 bytes-
dc.format.mimetype application/pdf-
dc.source.uri (資料來源) http://thesis.lib.nccu.edu.tw/record/#G0110921058en_US
dc.subject (關鍵詞) 事件研究法zh_TW
dc.subject (關鍵詞) 異常報酬率zh_TW
dc.subject (關鍵詞) Event Studyen_US
dc.subject (關鍵詞) Abnormal Returnsen_US
dc.title (題名) 探究外資買賣超是否具有資訊內涵—臺灣股票市場的實證分析zh_TW
dc.title (題名) Exploring the Information Content of Large Transactions of Net Buys/Sells from Foreign Institutional Investors — Evidence from the Taiwan Stock Marketen_US
dc.type (資料類型) thesisen_US
dc.relation.reference (參考文獻) 王子湄、蕭朝興 (2008) 。台灣股市三大法人委託型態與價格行為的實證分析。管理與系統,15(1),55-92。 李志宏、周冠男、謝育慈、林秋發 (2006) 。亞洲金融風暴前後外資交易行為與台灣股市互動關係之研究。 證券市場發展季刋,18(3), 47-72。 李顯儀、陳信宏、張志豪、莊英俊 (2012) 。美國次級房貸金融危機期間台灣股票市場外資交易行為研究。輔仁管理評論, 19(2)。 沈中華、李建然 (2000) 。事件研究法-財務與會計實證研究必備 (第一版)。 華泰文化。 周建新、簡淑敏 (2008) 。臺灣與國際股市極端值報酬相關性之研究。交大管理學報,28(1),205-250。 林福來、陳玉芬、白凱任 (2012) 。以滾動因果檢定法探討外資交易與股、匯市之動態關係。台灣金融財務季刊, 13(4), 079-105。 邱瑞琴、黃睦芸 (2011) 。開放外資及陸資投資國內證券市場發展史。證券暨期貨月刋,29(10),5-16。 邱麗卿 (2016) 。現金增資宣告期間的外資交易行為。中華管理評論國際學報,19(2)。 姜淑美、鄭婉秀、邱建良 (2003) 。外資交易行為、股市及匯市動態關係之研究。風險管理學報, 5(1), 45-64。 洪萬吉、鄭文傑 (2007) 。外資成交金額波動對台灣股票市場報酬之衝擊:Student's t分配與雙門檻-GARCH模型之應用。 Journal of Data Analysis,2(5),1-18。 高子荃、林楚雄、高偉舜 (2016) 。美國與國際股市之極值相依行為:極值連鎖理論的應用。應用經濟論叢,99,83-136。 郭敏華、紀鈞中 (2000) 。亞洲金融風暴前後外資投資行為暨報酬差異之探討。 管理評論, 19(1),81-118。 廖彥豪 (2006) 。三大機構投資人買賣超與台灣加權股價指數互動關係之研究。 南華大學財務管理研究所碩士論文。 歐婉如 (2009) 。匯率、外資買賣超與臺灣股價關係之研究。國立政治大學行政管理碩士學程碩士論文。 盧陽正、翁振益、方豪 (2008) 。臺灣股市三大法人持股調整、群聚效應、回饋交易、串流行為與群聚之動量持續性。管理與系統, 15(4),523-543。 蕭朝興、尤靜華、李家華 (2013) 。台灣股市機構投資人之交易策略和股票報酬。證券市場發展季刊,25(2),55-95。 蕭朝興、黃聖棠、黃聖志 (2008) 。臺灣股市外資之投資行爲。商管科技季刊, 9(4),547-573。 薛舜仁 (2004) 。專業外資(QFII)買賣超與我國股市、期貨市場的關聯性研究。 正修學報, 17,189-208。 謝中琮、李淑麗 (2001) 。國際資金流動對我國股票市場的影響。經濟研究年刋, 200203(2), 272-296。 類惠貞、李家豪與莊淨琳 (2008) 。壓力衝擊環境下之機構投資人從眾行爲-以台灣股票市場爲例。國立臺中技術學院學報, 9(1), 109-129。 Bae, S.C., Min, J.H., & Jung, S. (2011). Trading behavior, performance, and stock preference of foreigners, local institutions, and individual investors: Evidence from the Korean stock market. Asia‐Pacific Journal of Financial Studies, 40(2),199-239. Ball, R., & Finn, J.F. (1989). The effect of block transactions on share prices: Australian evidence. Journal of Banking & Finance, 13(3), 397-419. Boehmer, E., Masumeci, J., & Poulsen, B.A. (1991). Event-study methodology under conditions of event-induced variance. Journal of Financial Economics, 30(2), 253-272. Bowman, R.G. (1983). Understanding and conducting event studies. Journal of Business Finance & Accounting, 10(4), 561-584. Chan, K.C.L., & Lakonishok, J. (1995). The behavior of stock prices around institutional trades. The Journal of Finance, 50(4), 1147-1174. Close, N. (1975). Price reaction to large transactions in the Canadian equity markets. Financial Analysts Journal, 31(6), 50-57. Henderson, Jr, & Glenn, V. (1990). Problems and solutions in conducting event studies. The Journal of Risk and Insurance, 57(2), 282-306. Iwatsubo, K., & Watkins, C. (2021). The changing role of foreign investors in Tokyo stock price formation. Pacific-Basin Finance Journal, 67, 101548. Lakonishok, J., Shleifer, A., & Vishny, W.R. (1992). The impact of institutional trading on stock prices. Journal of Financial Economics, 32(1), 23-43. Marsh, T.A., & Wagner, N. (2003). Return-volume dependence and extremes in international equity markets. Research Program in Finance Working Paper, RPF-293 Vo, X.V. (2017). Trading of foreign investors and stock returns in an emerging market - Evidence from Vietnam. International Review of Financial Analysis, 52, 88-93. Wagner, N., & Marsh, T.A. (2005). Surprise volume and heteroskedasticity in equity market returns. Quantitative Finance, 5(2), 153-168. Ziebart, D.A. (1985). Control of beta reliability in studies of abnormal return magnitudes: A methodological note. Journal of Accounting Rresearch, 23(2), 920-926.zh_TW