I recently made a purchase of stock and made a good gain on it. However, i need the funds to make a purchase ASAP. Is it possible to withdraw the money from my cash-only brokerage account into my checking account without violating and settlement, T+3 regulations?
Yes, via a margin account, one can trade or transfer on unsettled funds.
These are tight regulations that begin with the Federal Reserve, extend to FINRA, and downward.
In a cash account, this is not possible.
Since speed is a necessity, a margin account can actually be approved nearly instantly.