The coronavirus pandemic boosted the fortunes of Allied Healthcare Products, a manufacturer of respirators, but it was bad for several other St. Louis companies. Two big coal miners, a shoe retailer and a life reinsurance company were among the firms negatively affected by COVID-19.

Here’s a summary of the stock market’s biggest winners and losers in 2020 among public companies that have their headquarters or top executives in the St. Louis area.

David Nicklaus | St. Louis Post-Dispatch