It could definitely be beneficial to switch to an S-Corp to avoid the 21% corporate tax. Since an S-Corp is a pass-through entity, short-term capital gains will flow through to your personal return and be taxed at your ordinary income rate on your Form 1040. All things considered, this can still result in a lower overall tax burden.
With a C-Corp, profits are taxed at 21%, and if you pay yourself dividends, those are taxed again at your individual rate โ resulting in double taxation. So the C-Corp setup can sometimes be less than ideal. It also depends on how many and what types of shareholders you want the corporation to have. S-Corps have limitations in that regard.