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UPDATE 2-Large block trades that caused selling raises questions about cause

(Adds background about Archegos, block sales, links, recasts)

March 27 (Reuters) - A number of large block trades on Friday which investors said caused big drops in the stocks of a clutch of companies has raised speculation about what was behind them, with Goldman Sachs said to be a bank involved in the sales.

Shares in ViacomCBS and Discovery tumbled around 27% each on Friday, while U.S.-listed shares of China based Baidu and Tencent Music plunged during the week, dropping as much as 33.5% and 48.5%, respectively, from Tuesday’s closing levels.

Investors and analysts on Friday cited large blocks of shares in both Viacom and Discovery companies as being put in the market on Friday, calling them massive volumes, likely exacerbating the declines. Viacom also on Friday was downgraded by Wells Fargo.

A source familiar with the matter said on Saturday that Goldman Sachs Group Inc was involved in the large block trades.

Bloomberg and the Financial Times on Saturday reported that Goldman liquidated more than $10 billion of stocks in the block trades.

The Financial Times reported that Goldman told counterparties that the sales were prompted by a “forced deleveraging”, citing people with knowledge of the matter.

CNBC reported here that the selling pressure was due to liqudation of positions by family office Archegos Capital Management, citing a source with direct knowledge of the situation. A person at Archegos who answered the phone declined to comment. Archegos was founded by Bill Hwang, who founded and ran Tiger Asia according to a page capture here of the fund's website. Tiger Asia was a Hong Kong based fund fund here that sought to profit on bets on securities in Asia.

An email to clients seen by Bloomberg News bloom.bg/3lYOrZm said Goldman sold $6.6 billion worth of shares of Baidu Inc, Tencent Music Entertainment Group and Vipshop Holdings Ltd , before the U.S. market opened on Friday, the Bloomberg report on Saturday said.

Following this, Goldman sold $3.9 billion worth of shares in ViacomCBS Inc, Discovery Inc, Farfetch Ltd , iQIYI Inc and GSX Techedu Inc, according to the report.

The Financial Times reported that Morgan Stanley sold $4 billion worth of shares earlier in the day, followed by another $4 billion in the afternoon.

Morgan Stanley and Goldman Sachs declined to comment. (Reporting by Juby Babu in Bengaluru; Additional reporting by Ken Li, Megan Davies and Sinead Carew; Editing by Diane Craft and Daniel Wallis)

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