Iain Withers

LONDON (Reuters). -Shares in Barclays LON: (LON) dropped as high as 6% on Tuesday morning after one of the top investors sold stock approximately equivalent to a 33% stake.

Goldman Sachs (NYSE) helped an unnamed investor launch a sale process for 575,000,000 shares Monday evening.

Although the Tuesday offering closed at 150 pence, it was still more than 6 percent off Monday’s close price. This put considerable pressure on its share price.

Barclays shares fell by around 6% in the first hour, just below its sale price. But, it recovered some lost ground. At 0727 GMT, the stock fell 4.3% to 153.5 pence.

According to Refiniv Eikon data, the Qatar Investment Authority (NYSE:) and Blackrock are two of the top shareholders holding around 3% in Barclays. Blackrock refused to respond when Reuters reached out on Monday. QIA, however, was unavailable for comment immediately.

Barclays is currently dealing with new compliance and risk issues after it revealed a loss of 450 million pounds ($589million) Monday as a result of overselling structured products to the United States.

Barclays stock fell 4% Monday after the disclosure.

Barclays stated that it may have to defer a 1 Billion Pound share buyback to avoid the losses it will suffer from the purchase of securities at their original purchase prices.

C.S. faces an uncertain future due to the regulatory error. Venkatakrishnan is the new chief executive at Barclays. His previous positions included leading the bank’s risk operations and global markets.

($1 = 0.7640 pounds)