[Cryptography] Business opportunities in crypto

[Kent Borg]

On 4/13/21 2:01 PM, Jerry Leichter wrote:
> but is there one that's implementable efficiently enough to match the 
> sub-millisecond times on which markets run these days?

Lop off some zeros, I think.

A few years back I read about some folks making bids /really/ fast. 
Kinda less than zero latency: They had an FPGA on a network card that 
started sending out a bid before the quote it was based on had been 
fully received. The trick being they could set the bid price at the last 
moment. They could also abandon sending if their guess was wrong.

(A bit like how, in an under powered car, one can pass a truck on a 
curvy little Mexican road: accelerate on the assumption the oncoming 
lane /will/ be clear when you get to the little straightaway you think 
you can see ahead. If when you get there it /is/ clear, go! If not, hit 
the brakes. Similar idea.)

Whether abandoned packets annoyed the exchange they did not say. (What 
my passengers thought of the technique is a question, too.)

-kb, the Kent who doesn't drive on curvy little Mexican roads anymore, alas.

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