Did short-sell play on Olam start in May?

On speculations that Muddy Waters may have started to build its short positions against commodities player Olam International as early as six months ago, SMU LKCSB Associate Dean (Research) and Professor of Finance Melvyn Teo noted that short-sellers like Mr James Chanos, an American hedge fund manager and founder of Kynikos Associates, build up their positions over time before announcing to the public what they believe is wrong with the company. "They form an investment thesis, build their positions, then go out to the media and tell them why they shorted the stock and what's wrong with them," Prof Teo said. “It's quite common for dedicated short-sellers to operate in this way."