Bill Ackman still has his bounce.
This morning the hedge fund manager announced his biggest stake ever — 9.8% in industrial gas product maker Air Products International, according to CNBC's Maneet Ahuja.
Now shares of the stock are surging in pre-market trading, they're up 4.21% and the stock has surpassed its 52 week high.
Check it out in the chart below from MarketWatch: