[Update 7:50PM: Updated Wilshire 10 minute chart. It looks decent for now. At some point though, if this is Minor wave 4, then the [b] wave would look better if it were to break upwards to a certain extent. So far it has been weak and unable to stick its nose above major resistance for a spell.
At any rate, there is no definitive pattern emerging just yet for minor wave 4 although we likely have at least the [a] wave marked correctly. We can imagine a triangle but its ultimate form has not been revealed.
This SPX imagines a short triangle although its probably not right.