Screen based portfolio system testing on MetaStock data! If you like the MetaStock System Tester because you can test your system on historical data, but it only works on one security at a time. If you like the MetaStock Explorer because you can screen and rank securities, but you can only look at one day at a time. If you're saying 'Why can't I back-test my system on historical for ALL of my security data at once?' With Pikker, now you can. Using Pikker, you can test your trading ideas the way you really trade; a portfolio of multiple securities selected from your universe of available securities.