<p><strong><img src="https://static1.businessinsider.com/image/5d5ea3b82e22af1b9a2347e4-1336/screen shot 2015-11-24 at 111542 am.png" border="0" alt="Dr. Michael Burry" data-mce-source="Getty Images/ Astrid Stawiarz"></strong></p><bi-shortcode id="summary-shortcode" data-type="summary-shortcode" class="mceNonEditable" contenteditable="false">Summary List Placement</bi-shortcode><ul><li><strong>Michael Burry held put options on over 800,000 Tesla shares at the end of March.</strong></li><li><strong>"The Big Short" investor has blasted Elon Musk's automaker for its "ridiculous" valuation.</strong></li><li><strong>Burry's Scion fund also bet on oil and pharmaceutical stocks, and invested in a SPAC.</strong></li><li><strong><strong><a href="https://www.businessinsider.com/'hprecirc-bullet">See more stories on Insider's business page</a>.</strong></strong><hr></li></ul><p>Michael Burry shed light on his bet against Tesla in a <a href="https://www.sec.gov/Archives/edgar/data/1649339/000156761921010281/xslForm13F_X01/form13fInfoTable.xml">regulatory filing</a> on Monday. The investor's firm, Scion Asset Management, held bearish put options on over 800,000 shares of Elon Musk's electric-car company on March 31.</p><p>Burry's puts give him the right to sell those sharesworth $534 million at the end of Marchat a specified "strike price" before a certain expiration date. If Tesla's stock price falls below the strike price before the options expire, Burry can sell his shares for a profit.</p><p>The Scion chief <a href="https://markets.businessinsider.com/news/stocks/tesla-stock-big-short-michael-burry-elon-musk-share-issuance-2020-12-1029859345">revealed</a> he was short Tesla on December 2, describing the automaker's stock price of about $570 at the time as "ridiculous." He later <a href="https://markets.businessinsider.com/news/stocks/big-short-michael-burry-tesla-boom-internet-stocks-housing-bubbles-2021-2-1030086573">compared</a> the hype around Tesla to the dot-com and housing bubbles, and <a href="https://markets.businessinsider.com/news/stocks/big-short-michael-burry-predicts-tesla-stock-price-housing-bubble-2021-1-1029943006">told shareholders</a> to "enjoy it while it lasts."</p><p>Tesla's stock price surged to an intraday high of $900 in late January, but has slumped by more than a third since then to around $580 today. The decline has slashed the company's market capitalization from almost $870 billion at the peak to below $560 billion.</p><p>Burry is best known for his billion-dollar bet against the US housing bubble in the mid-2000s, which was immortalized in Michael Lewis' book "The Big Short." He also helped <a href="https://markets.businessinsider.com/news/stocks/big-short-investor-michael-burry-scion-gamestop-stock-price-frenzy-2021-2-1030050393'utm_source=markets&utm_medium=ingest" target="_blank" rel="noopener">lay the groundwork</a> for the GameStop <a href="https://markets.businessinsider.com/news/stocks/reddit-day-traders-wallstreetbets-gamestop-gme-rally-upending-stock-market-2021-1-1030009280">buying frenzy</a> earlier this year by taking a stake in the video-games retailer and pushing for changes back in 2019.</p><p>Scion made a raft of changes to its portfolio last quarter. It sold its stakes in companies such as Molson Coors and Wells Fargo, and dumped bullish call options on Citigroup and Pfizer stock. It also bought call options on Alphabet, CVS Health, and Facebook stock, and invested in Meredith, Zymeworks, and other companies.</p><p>The investment firm also doubled down on Kraft Heinz, which counts Warren Buffett as its biggest shareholder. Scion owned calls on about 1.2 million of the food group's shares at the end of March, up from 590,000 three months earlier.</p><p>Burry and his team seem bullish on pharmaceuticals and oil too. They invested in drugmakers Aerpio and Marinus last quarter, and bought stakes in Occidental Petroleum, Precision Drilling, and Scorpio Tankers.</p><p>Notably, Scion also disclosed a stake in Vector Acquisition Corp, a special-purpose acquisition company that struck a deal in March to take aerospace manufacturer Rocket Lab public. Burry cautioned last year that many SPACS aren't properly vetted, but Vector may be an exception.</p><p>Burry <a href="https://www.businessinsider.com/big-short-michael-burry-tweets-tesla-robinhood-bitcoin-gamestop-bubble-2021-3">called out</a> the <a href="https://markets.businessinsider.com/news/stocks/big-short-michael-burry-gamestop-stock-price-rally-insane-dangerous-2021-1-1030006593'utm_source=markets&utm_medium=ingest'utm_source=markets&utm_medium=ingest" target="_blank" rel="noopener">GameStop buying frenzy</a>, <a href="https://markets.businessinsider.com/currencies/news/big-short-michael-burry-says-bitcoin-speculative-bubble-crash-coming-2021-3-1030134627'utm_source=markets&utm_medium=ingest'utm_source=markets&utm_medium=ingest" target="_blank" rel="noopener">bitcoin</a>, and <a href="https://markets.businessinsider.com/news/stocks/big-short-investor-michael-burry-robinhood-trading-apps-dangerous-casino-2021-2-1030060706'utm_source=markets&utm_medium=ingest'utm_source=markets&utm_medium=ingest" target="_blank" rel="noopener">Robinhood</a> as evidence of dangerous speculation in markets earlier this year. He <a href="https://markets.businessinsider.com/currencies/news/big-short-investor-michael-burry-stop-tweets-sec-regulators-visit-2021-3-1030222890'utm_source=markets&utm_medium=ingest'utm_source=markets&utm_medium=ingest" target="_blank" rel="noopener">pledged to stop tweeting</a> in mid-March, citing a visit from federal regulators, and <a href="https://markets.businessinsider.com/currencies/news/big-short-michael-burry-deletes-twitter-profile-warning-market-bubbles-2021-4-1030275994'utm_source=markets&utm_medium=ingest" target="_blank" rel="noopener">deleted his Twitter profile</a> in April.</p><p><a href="https://markets.businessinsider.com/news/stocks/big-short-michael-burry-put-options-elon-musk-tesla-stock-2021-5-1030437431#comments">Join the conversation about this story »</a></p> <p>NOW WATCH: <a href="https://www.businessinsider.com/where-run-hide-earthquake-occurs-2017-6">Where you should go to stay safe during an earthquake</a></p>
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