Core Insights - Beyond Meat's stock price surged approximately 600% over three days, with a single-day increase of over 146%, marking its largest single-day gain in history [1] - The catalysts for this stock price increase include its inclusion in Roundhill's meme stock ETF and the announcement of an expanded distribution agreement with Walmart [1] - Roundhill's meme ETF had previously been shut down due to lack of investor interest but was relaunched following an influx of retail investor capital [1] - Beyond Meat, once a favorite among retail investors as a "meme stock," had recorded negative returns for five consecutive years and had fallen to "penny stock" status from its IPO peak [1] - Analysts suggest that the inclusion in the ETF may have triggered a short squeeze, as over 63% of Beyond Meat's float was sold short [1]