  In a stock market, the numeraire portfolio, if it exists, is the portfolio
with the highest expected logarithmic growth rate at all times. A numeraire
market is a stock market for which the market portfolio is the numeraire
portfolio. We study open markets, markets comprising the higher capitalization
stocks within a broad equity universe. The stocks we consider are represented
by continuous semimartingales, and we construct an example of a numeraire
market that is asymptotically stable.
