RE:Why is the SP showing weakness today?MrWidzo ... Readers Digest response ... in the current environment if you are a long term investor you need not worry ... this is just swingers having their fun ... everyone else is waiting for the anticipated big NR(s) such as the Nasdaq uplift and such.
FYI ... there is an enormous amount of free information available for learning about investing ... I recommend you find some and learn at least a few basics ... here is a good starting point; https://www.investopedia.com/ ... there are also a number of Facebook groups that may provide additional important info/tips. This type of research would be an important part of your DD (due diligence).
Cheers!