Check out the companies making the biggest moves midday: Lululemon — Shares of Lululemon fell 12% after the athletic apparel company gave a weaker-than-expected fourth-quarter outlook. In the third quarter, the company beat Wall Street's expectations on the top and bottom lines. Beyond Meat — Beyond Meat's stock dropped more than 8% after being downgraded by Argus to sell from hold. The firm's analyst cited falling demand amid weaker economic conditions. Broadcom — Broadcom gained 3.1% after giving an upbeat revenue forecast and reporting better-than-expected quarterly results after the bell Thursday. The chipmaker also increased its dividend by 12.2% and…