On the T&S you see several big trades, say 25,000 shares each. For that stock this is a bullish sign because it indicates that an institution is opening/increasing a position, right? Or is it? There must be someone on both sides of a trade, and most individuals don't have 25,000 shares to sell in a single transaction. So, it seems logical to me that when you see a block trade, there is an institution on both sides. PLEASE correct me if this assertion is incorrect. If this is correct, then although one institution is buying another institution is selling thereby decreasing/closing a position in that stock. So how can one draw any conclusions whatsoever when there are block trades on the T&S ???? Can someone explain please?