Earnings / Industry directory / Materials & Chemicals Paperboard Mills 1 stock in Materials & Chemicals · SIC 2631. Company snapshot 2026-11-13 · Calculated market cap as of 2026-11-06 · USD Find a company or ticker Stocks in Paperboard Mills. Sorted by market cap, largest first. Ticker Company Market Cap Revenue (TTM) Net Income (TTM) CLW Clearwater Paper Corp $224.21M $1.51BTTM ended 2026-09-30 $2.40MTTM ended 2026-09-30 No matching companies.