Your phone’s GPS works partly because Einstein was right about time. GPS satellites carry atomic clocks. Because they move quickly, relativity makes their clocks tick about 7 microseconds slower per day than clocks on Earth. But because they experience weaker gravity in orbit, their clocks tick about 45 microseconds faster. Net effect 38 microseconds per day. That sounds microscopic. It isn’t. Without correcting for it, GPS positioning errors would accumulate by roughly 10 kilometers per day. The remarkable part is what this says about systems built on measurement. A tiny error in something nobody notices can become enormous when repeated across a complex system. Markets have the same property. A timestamp slightly wrong. A price feed slightly delayed. A corporate action applied incorrectly. A tiny data error repeated millions of times. The individual error looks harmless. The system doesn’t care how small it was. Small errors become large when the system gives them enough time to compound. #Trading# #QuantFinance# #MarketData# #SystemsThinking#

if you want to get into quant trading, watch this over the weekend. MIT, Yale and Oxford put their quant finance material online for free. this walks you through what to actually study and in what order, so you're not just collecting courses. 9 minutes. no cost to any of it.

peak at some of the work we do for our lending / borrowing cluster coming on @eulerfinance ... imo data analytics is conquered but AI is miles from doing any decent quant finance. I've been writing a paper recently using fable and it required huge rafts of edits. What is was really good for was finding holes in logic and filling out the blanks but in most cases as you can see from the first two pages it’s just a pile of slop that needs almost a total rewrite. The way in which it words things makes it sound arrogant and annoying and frankly confusing to read. The logic had some major flaws I had to correct in a few places too. The edits are dense throughout all 25 pages.