Starting out with back testing

External question — Quantitative Finance Stack Exchange Author: Frosty Zephyr Original post: https://quant.stackexchange.com/questions/63659 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I am new to quant, but have skirted around the various competencies required. I have a couple of engineering degrees; a masters in finance, and I also work as a relationship director in a commercial bank for institutional clients. I have a portfolio strategy I'd like to test. I've (very slowly!) figured out the math and modelled it in excel. The strategy selects ETFs from different asset classes using momentum measures and then algorithmically weights them using risk parity concepts. So I'm using using matrices and iterative methods for the weighting, and selecting ETFs from various "buckets" of asset classses based on momentum. I'd really appreciate some advice on the "best" platform(s) to backtest - I have to confess I'm a bit confused about how/where to go about doing this. Some other points that may be useful: I'm not a programmer, but could probably figure it out if needed. I did some programming as an engineer, but that was roughly a million years ago in languages not particularly relevant to quant I'd be looking at rebalancing monthly I'd rather not spend too much money doing the back testing as my investable portfolio is miniscule at the moment My current broker is Interactive though it isn't clear to me that they have the capability I need for backtesting Thanks in advance - any advice would be appreciated.