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Abstrak :
Dalam penelitian ini peneliti memberikan bukti empiris yakni pentingnya faktor positive feedback trading bagi perilaku nilai tukar. Dengan mengandalkan model GARCH augmented feedback model yaitu model nilai tukar Laopodis (2005) peneliti menganalisis parameter autokorelasi nilai tukar dan volatilitas untuk mendapatkan wawasan lebih dalam mengenai karakteristik nilai tukar yang diinduksi oleh trader yang mengikuti strategi positive feedback trading. Dugaan peneliti adalah positive feedback trader memiliki pengaruh terhadap volatilitas nilai tukar Negara-Negara ASEAN dan menginduksi autokorelasi negatif return selama periode volatilitas yang tinggi. Hasil penelitian adalah selama periode 1995-2014, hanya negara Singapura yang terdapat positive feedback trading secara signifikan, sedangkan pada periode krisis 1997-1998, negara yang terdapat positive feedback trading secara signifikan adalah Thailand, Indonesia, Malaysia, Filipina, Brunei, Singapura. ...... In this study, researcher provides empirical evidence of the importance of positive feedback trading factor for the behavior of the exchange rate. By relying on the model of the exchange rate Laopodis(2005) which is GARCH augmented feedback model, researcher analyzed autocorrelation parameters and volatility of exchange rates to gain more insight into the characteristics of the exchange rate induced by traders who follow positive feedback trading strategy. The alleged researcher are positive feedback traders have an influence on the exchange rate volatility of ASEAN Countries and induce negative autocorrelation return during periods of high volatility. Results of the study are during the period 1995-2014, only Singapore that there is positive feedback trading significantly, while in the period 1997-1998 crises, Thailand, Indonesia, Malaysia, Philippines, Brunei, Singapore, there are any positive feedback trading significantly.

Abstrak :
Tujuan penelitian ini adalah menganalisis penyebab dan konsekuensi perilaku herding oleh investor asing dan domestik di Bursa Efek Indonesia. Faktor-faktor penyebab perilaku herding difokuskan pada karakteristik saham, meliputi ukuran perusahaan, tingkat likuiditas, imbal hasil masa lalu, dan volatilitas imbal hasil. Teknik analisis yang digunakan adalah analisis data panel, yaitu model fixed effect dan model random effect. Hasil penelitian menunjukkan bahwa baik investor asing maupun investor domestik berperilaku herding, tetapi tingkat herding investor asing lebih tinggi dibandingkan investor domestik. Selain itu, tingkat sell-herding oleh investor asing dan domestik lebih tinggi dibandingkan tingkat buy-herding. Penelitian ini menemukan bukti signifikan bahwa perilaku herding oleh investor asing dan domestik sama-sama termasuk dalam kategori unintentional herding. Investor asing merupakan momentum trader, sedangkan investor domestik merupakan contrarian trader. Portofolio saham yang di-herd buy dan di-herd sell oleh investor asing menghasilkan imbal hasil positif di masa depan, menunjukkan bahwa buy-herding dan sell-herding oleh investor asing, secara terpisah, menguntungkan dan merugikan investor. Di lain pihak, buy-herding dan sell-herding oleh investor domestik merugikan investor. Hal ini ditunjukkan oleh imbal hasil negatif di masa depan untuk portofolio saham yang di-herd buy oleh investor domestik, sedangkan portofolio saham yang di-herd sell mempunyai imbal positif di masa depan. Terakhir, perilaku buy-herding investor asing tidak mendestabilisasi harga saham, tetapi tidak demikian dengan perilaku sell-herding investor asing. Baik perilaku buy-herding maupun sell-herding oleh investor domestik mendestabilisasi harga saham. ...... This study investigates causes and consequences of foreign and domestic investor herding in Indonesia Stock Exchange. Causes of herding are focused on stock characteristics, such as size, stock liquidity, past returns, and volatility. The analysis technique used in this study is fixed effect and random effect panel regression model. Results show that both foreign and domestic herd, but foreign investors herding level is higher than domestic’s. Furthermore, sell-herding level of both foreign and domestic investors is higher than buy-herding level. This study find significant evidence of foreign and domestic investor herding is driven by past returns. Domestic investors tend to herd more on firms with bigger capitalization. Foreign investors are momentum traders, while domestic investors are contrarian trader. The portfolio that foreign investors herd buy and herd sell produce positive returns in the future, suggest buy-herding and sell-herding by foreign investors have a desirable and adverse effect on investors, respectively. By contrast, buy-herding and sell-herding by domestic investors incur losses. This is indicated by negative returns in the future for the portfolios that domestic investors herd buy, while the portfolios that domestic investors herd sell generate positive returns in the future. Lastly, foreign investors buy-herding behavior does not have potential to destabilize stock prices, but not so with foreign sell-herding behavior. Either domestic buy-herding or sell-herding destabilizes the stock prices.