نااطمینانی سیاست های اقتصادی و بازار سهام ایران با تکیه بر رویکرد تغییر رژیمی مارکف
الموضوعات : دانش مالی تحلیل اوراق بهادارحسین امیری 1 , محبوبه پیرداده بیرانوند 2
1 - استادیار، دانشکده اقتصاد، دانشگاه خوارزمی، تهران، ایران
2 - دانش آموخته کارشناسی ارشد، دانشکده اقتصاد، دانشگاه خوارزمی، تهران، ایران.
الکلمات المفتاحية: بازده سهام, نااطمینانی سیاست های اقتصادی, مدل مارکف سوئیچینگ,
ملخص المقالة :
از جمله عواملی که سرمایه گذاران در تصمیم گیری های خود مد نظر قرار می دهند، نرخ بازده سهام است. دستیابی به این بازده در شرایطی امکان پذیر است که ثبات اقتصادی وجود داشته باشد. یکی از جنبه های ثبات اقتصادی، ثبات سیاست های اقتصادی است که نقش مهمی در اقتصاد کشور ایفا می کند. به گونه ای که اگر نااطمینانی نسبت به سیاست های اقتصادی وجود داشته باشد، این نااطمینانی موجب نااطمینانی فعالان اقتصادی نسبت به تحولات آینده ی اقتصاد خواهد شد و به دنبال آن صاحبان سرمایه دیگر قادر به تصمیم گیری برای آینده از جمله سرمایه گذاری نبوده و بازار پول و بازار سرمایه با مشکل مواجه خواهد شد. در این مقاله اثر نااطمینانی سیاست های اقتصادی بر بازده بازار سهام با استفاده از مدل های خطی و غیرخطی (مارکف سوئیچینگ) طی دوره زمانی 1395-1360 بررسی شده است. در پژوهش فوق از متغیرهای نرخ رشد اقتصادی، نرخ تورم، نرخ بیکاری، نرخ سود حقیقی، نااطمینانی سیاست های اقتصادی و نرخ رشد نقدینگی به عنوان متغیرهای مستقل استفاده می شود. یافته های مقاله نشان می دهد که نااطمینانی در سیاست های اقتصادی موجب کاهش بازده بازار سهام می شود. همچنین ارتباط بین بازده بازار سهام و نااطمینانی سیاست های اقتصادی غیرخطی و اثر نااطمینانی بر بازده سهام در رژیم با نوسانات بالا قوی تر و پایدارتر است. لذا اتخاذ سیاست های مناسب و پایدار اقتصادی از سوی سیاستگذاران اقتصادی به ویژه در حوزه پولی و مالی توصیه می شود.
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