RE: I am a new investor28 Feb 2021 16:34
While I do agree it's nice to be wrapped in ISA on big wins, it is also important to remember that your losses in ISA are equally wrapped and cannot be used to offset other CGT-subject gains. The right choice about investing in/out of an ISA are dependent on the specifics of your wealth composition, and your tax planning. In case of risky shares (like O&G exploration surely are), I see ISA as the best choice if you do not mind the potential losses (i.e. you do not need to offset), and if you handle your ISA shares portfolio carefully, leaving yourself always some margins to potentially have to average down on unfortunate event of dilutions or SP retrace. For that you shall either save enough ISA allowance to be able to deposit more cash and buy when you need to average down, or have already a decent portfolio so you can redistribute your holdings shelving some gains from a blue investment to average down a red one. I'm not a financial advisor, just my 2 cents.