Need to see the prospectus first. But I'd prefer an index ETF (FTSE NSE15 or 25) than owning the shares of an exchange.
Will NSE continue to grow? Yes as well as from other securities they'll launch.
Will it grow at the 2013 pace? Not easy to repeat that growth.
Will NSE face another exchange rival(s) in future? Likely.
Since this KE exchange is still a toddler, I'd rate it a buy as it still has room for growth as EAC econ expands enabling more listings. NSE has a few firms listed (some which hardly trade for days/weeks) compared with JSE or egypt or nigeria exchanges; it's a toddler. Then look at the other EAC exchanges that have lesser listed firms and static trading...
$15/barrel oil... The commodities lehman moment arrives as well as Sovereign debt volcano!