high-frequency trading noun a type of stock market trading that uses very complex technology to trade extremely quickly, often making tiny profits which nevertheless add up to substantial sums

Lewis’s book, Flash Boys, is driving a huge amount of attention toward the topic of high frequency trading, and it has rekindled some of [sic] basic arguments over its impact on markets and investors.

[http://www.businessweek.com/ 01 April 2014]

dark pool noun a private stock market, usually owned by a major financial institution

The dark pool is not required to report whatever happens to it in real time to the world outside of it.

[WNYC: Leonard Lopate Show (culture and information) 23 April 2014]

Nisa noun a new version of the ISA, a UK tax-free savings scheme

‘Nisa’ rules come into effect from July, but there is still confusion over the time limits for topping up fixed-rate cash Isas.

[www.telegraph.co.uk 12 May 2014]

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