If you want to place a limit order to sell the shares you will be receiving, call the Fidelity active trader desk at 877 907 4429 and they'll place your order and waive the fee since you can't physically trade YOUR shares If you owned shares of $CLBR that were converting today, they won't be available online until tomorrow. If you didn't already own shares and want to trade $PEW, then you can go on Fidelity and look up the ticker and buy and sell freely online. But if you held $CLBR, you won't receive your $PEW shares until tomorrow.