Reading #47: Market Efficiency Flashcards
informationally efficient capital market
current price of security fully, quickly and rationally reflects all avail. info
in perfectively efficient, use passive or active?
passive because active wld underperf. due to trans. costs and mgmt fees
Name factors of market efficiency
of participants, availability of info, impediments to trading, trans& info costs
Weak form efficient market
current security prices FULLY reflect all CURRENT avail. security mkt data. cannot use tech analysis to returns (based on past perf)
Semi Strong Form market efficiency
sec. prices rapidly adjust without bias to arrival of new public info. cannot use fundamental analysis for returns
strong form mkt efficiency
fully reflects PUBLIC and PRIVATE sources and no one has monopolistic access to info
loss aversion
investors more risk averse with potential losses and less risk averse with potential gains
define overreaction effect
“stocks with poor returns over three to five-year periods that had higher subsequent performance than stocks with high returns in the prior period.”
define overreaction effect
“stocks with poor returns over three to five-year periods that had higher subsequent performance than stocks with high returns in the prior period.”
define momentum effect
“Stocks with high previous short-term returns that have high subsequent returns”
define “Information cascades”
“refers to uninformed traders watching the actions of informed traders when making investment decisions”
define Herding behavior
“when trading occurs in clusters, not necessarily driven by information.”
define Narrow framing
“refers to investors viewing events in isolation”