• Market regulator still investigating Castex share movements
  • Convertible bondholders complained of stock manipulation

India’s market regulator, which is probing unusual movements this year in the shares of Castex Technologies Ltd., said it hasn’t yet found any signs of wrongdoing.

Some holders of Castex’s convertible bonds complained to the Securities and Exchange Board of India in September, alleging manipulation of its shares with an aim to inflate the price and trigger conditions for a mandatory conversion of the debt. After surging almost 5 percent in 12 of the 16 sessions through July 13 to a record 362.65 rupees, the stock slumped by the daily 5 percent limit in the subsequent 42 days.

“We have not found any instance of market manipulation or unfair trading practices so far,” Sebi Chairman U.K. Sinha said in an interview. “If we find any evidence, they will not be spared.”

Castex’s share price tripled since the end of March until reaching the threshold that triggered the mandatory conversion. In September, the company decided to convert $137.4 million of foreign-currency debt outstanding into equities. The shares have tumbled 94 percent since July 14.

John Flintham, senior managing director of Amtek Auto Ltd., a group company of Castex, said Sept. 11 he had no knowledge of any stock-price manipulation.

Many investors have suffered significant losses “because the price of the shares remained unnaturally high only for (exactly) as long as long was required to give the company the opportunity to purport to exercise its conversion rights,” Quinn Emanuel Urquhart & Sullivan UK LLP, a law firm representing the bondholders, wrote in a letter dated Sept. 7 to Sebi’s Sinha.

“We have received a number of complaints on the issue,” Sinha said in his office in Mumbai. “We have informed them that we are investigating this.”

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