The distribution date of the PJT shares are on 10/1/15 at 12:01AM ET for those who hold shares as of 5:00PM ET on 9/22/15 according to the communication sent out by BX to its shareholders. Therefore, 10/1/15 is officially when said shares will commence trading publicly. There may also be slight trading of warrants for BX shares a few days prior according to the communication.
No, I didn't suggest that you said Stop Loss order. I was just pointing this out for people who think they are protecting themselves from further losses with a Stop Loss order when they can get nailed on a day such as 8/24 when the Dow tanked 1,000 points in a flash.
The WORSE thing to do is place a Stop Loss order in! In a volatile market, a Stop Loss order quickly becomes a Market order in which case, if suddenly the markets tank preciptiously, the order may be executed at a MUCH LOWER price than the Stop Loss price.