There are large and famous funds that have lasted despite all that you say. So it is very possible to achieve fame, have your positions known, and have people trade against you, and still not be forced into selling your entire public portfolio to satisfy a margin call.
This is why hedging and neurotic levels of risk-management are necessary. Running a highly levered and highly correlated portfolio is a disaster waiting to happen regardless of whether your overall thesis is correct or not.
This is why hedging and neurotic levels of risk-management are necessary. Running a highly levered and highly correlated portfolio is a disaster waiting to happen regardless of whether your overall thesis is correct or not.