The law of averages ...?

Unless your winnings were so huge as to directly affect future markets (e.g. by scaring off other punters) the fact that your bot has had a lucky streak doesn't make it any more likely to have an unlucky streak.  To quote from Wikipedia:

The gambler's fallacy, also known as the Monte Carlo fallacy or the fallacy of the maturity of chances, is the false belief that if deviations from expected behaviour are observed in repeated independent trials of some random process then these deviations are likely to be evened out by opposite deviations in the future. For example, if a fair coin is tossed repeatedly and tails comes up a larger number of times than is expected, a gambler may incorrectly believe that this means that heads is more likely in future tosses.^[1] Such an event is often referred to as being "due".

So just enjoy your extra winnings I'd say.