Day Variances in Profit/Loss

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Sjpiercy
Posts: 6
Joined: Fri Jun 26, 2015 11:38 pm

Hi everyone,
I am sure there is an obvious answer to what I am about to ask but I just cant find it!

Over the last month I have developed an automation package on BA that runs on the UK and Ireland horses 7 days a week. It follows the same process for every single race each day.

A pattern has emerged regarding when I make losses but not sure why?!?!

For the last 4 weeks every Saturday/Sunday has been a loss maker with this automation, every monday has been pretty much breakeven give or take £10.00 and every tuesday, wednesday, thursday and friday has been very profitable. Startling at respectable on tuesday and GREAT on friday!

Why is this?

Ive kept a spreadsheet listing every race, time, day, venue, etc and no reasons are jumping out at me as to why this would be the case.

Any advice? Ideally I dont want to not trade on SAT/SUN/MON.


Steve
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marksmeets302
Posts: 527
Joined: Thu Dec 10, 2009 4:37 pm

Same here, but with different days. It tends to change over time though: Wednesday has always been a very good day for me. Clearly remember that because it would offset pc payment on that day. Lately, not so good. Friday and Saturday have always been kind to me. Sunday can be an underperformer month after month, and then suddenly change to very profitable.

I've tried changing stakes but that gives me the emotional discomfort of not knowing if I could have done better. Now I only change stakes based on the season we're in.

Sorry I can't help you with this, but at least you're not alone!
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LeTiss
Posts: 5488
Joined: Fri May 08, 2009 6:04 pm

That's why I love trading!

It's impossible to ask that question here and get the perfect response. It's for you to analyse why it works some days and not others

At weekends there will be some people trading who don't trade during the week, as they have jobs.

Therefore, slight differences in markets can be expected

You will NEVER produce an automated strategy that produces a contstant P+L return, there will always be variances

You just need to look at the bigger picture - is it making money...Yes/No?
What can I do to tweak it on days where it loses money?

Don't be disheartened, we've all been there - it's all part of the game mush
PeterLe
Posts: 3727
Joined: Wed Apr 15, 2009 3:19 pm

Gents
I went through this many years ago...
If you search on the forum there is a spreadsheet produced by NigelK..You couple it with the extract of your P&L and it produces a great breakdown of your P&L against course etc....
When I was using it with my daily automated in running system (over many years) a clear pattern emerged..In the early days I dropped the Irish racing and found that, amongst others Ling, Southwell and Wolv were all net negative (so I remove them from the algo, and conversely on the positive courses I upped the stakes..).. so on and so forth....

(NB: Things dont stay static for ever though; in the latter years I found Wolverhampton became one of the best courses.(it may have been after the hotel on track closed??)..anyway I had some big in play wins there...
So the message is that you need to constantly monitor over time..
Regards
Peter
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gazuty
Posts: 2557
Joined: Sun Jun 26, 2011 11:03 am

Exactly. Different markets have different profiles.

Figuring out the most profitable is key.

And you also need enough data to ensure you are not being fooled by randomness. It's hard to sort the signal from the noise.
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hilly2908
Posts: 91
Joined: Wed Mar 18, 2015 7:55 pm

I second what Letiss said about weekends having an additional set of people rather then just the weekday crowd and think its generally excepted that there is a lot more "Real" money going throught the market at this time rather than just traders battling it out which could in part explain why your making a loss at this time of the week.

I would look at tweeking your automation for these days or just not use it - after all better to do nothing than run it knowing its making a conatant loss on these days.

Regards
Andy
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