But not right away. Consider what will happen:
1) It will take X days, weeks, or months for the initial few million $ worth to be bought up. Those purchases have no effect on the exchange price, or maybe even a mild negative effect if some who were buying coins steadily via the exchanges switch over to BIT.
2) Once the initial few million in seed is bought up, Second Market will start to purchase more, maybe $5-10 million worth. If they do part or all of this on an exchange, the price impact will of course be strongly positive. However, given how many contacts they have for private placement, they'll likely acquire part or all of those coins from dark, non-exchange sources. If they purchase very few of those coins on exchanges, the immediate price impact will be negligible, but the medium-term effect will be dramatic.
The reason why is a bit subtle but very real: Insofar as the people Second Market buys the coins from would have sold those coins on exchanges if it weren't for SM giving them the wonderful opportunity to sell without slippage, that much less BTC is going to be available on the exchanges. The same amount of money chasing fewer BTC means a higher price per coin. But there will be a time delay, perhaps days or weeks, maybe in some cases months.
The fun part is that those who understand the time delay get to make money off those who are fooled by the time delay. Translation: Buy before the price rises and get in on the ground floor of the next stage of the bitcoin rocket.
if i were in charge of purchasing the coins for the trust i would make sure to buy a healthy part at the exchanges to drive up price. that will make BIT look even more attractive since performace inreases with price.