Shares at PSX rally 1,000 points amid expectations of smooth IMF review / Dairy firm plans PS90m investment in Lockerbie site / Shares at PSX make marginal gains on hopes of new IMF deal / Bulls rampant at PSX as shares see biggest single-day gain a day after budget / Bulls rampant at PSX as shares gain 2,700 points in intraday trade a day after budget / Bulls return to PSX as shares gain 1,000 points