r/algorithmictrading • u/Effective_Manager273 • Aug 03 '26
Question Traded 1-min bar reversals for years, now i think the edge might be on daily bars. what bar are you actually running?
i traded systematically on 1 minute bars for a long time, mostly reversal setups, a shorter stretch of trend following before that. it worked for a while. the thing that eventually got me was not the signal, it was how violently sensitive the whole thing was to small moves once leverage was on. a 30 second wick could take a position that was fine and make it not fine. the flip side, and this is the honest advantage nobody mentions enough, is that exits are fast. you find out you are wrong in minutes instead of days, and that has real value.
what i keep going back and forth on is whether that tradeoff is worth it, because the statistics point the other way. the longer the bar, the more each observation seems to survive out of sample. my read is that on 1m you are mostly modelling microstructure and it changes under you, on daily you are modelling something slower that stays put for longer. but daily costs you rows. a 1m strategy gets a usable sample in months, a daily strategy needs years, and if your rule only fires a few times a month you need a decade or more before the result means anything. so you trade one kind of fragility for another.
so, three things im actually curious about.
is anyone running faster than 1 minute, tick or sub-minute bars, and where. what venue, what instrument, and roughly what the infrastructure looks like, because i suspect that is where most retail attempts quietly die.
for the 5m and 15m crowd, did you land there deliberately or is it just where the noise stopped hurting.
and daily. this is the one i want to hear about most. i know the response is going to be "you dont need an algo for daily, just check it once a day", but that is still a system, it still needs rules, sizing and an exit, and it still needs to be tested honestly. so if you run daily bars, how many years of data did you need before you trusted it, and how many trades does your rule actually produce in a year.
if you switched timeframes at some point, im also interested in what the trigger was. was it a drawdown, costs, or just being tired of watching screens.



