Suppose I place a stop limit sell order at $10 (limit set at $9) for a stock that trades atm at $15. Will my order be visible on the open market immediately or only after it becomes a limit order (when the stock price on the open market reaches the $10 mark) ?

Same question for the stop order.

Update: If the stop order is not visible before the stop price is reached, is there anything legally preventing the brokerage firms/banks in sharing with third-parties their clients stop orders before they become market/limit orders ? I think this information could be used by short sellers (when they want to cover) and would be against the interest of longs.