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The S&P 500 ESG Index uses environmental, social and governance data to rank and effectively recommend companies to investors. Its criteria include hundreds of data points per company that pertain to the way businesses affect the planet and treat stakeholders beyond shareholders — including customers, employees, vendors, partners and neighbors.
Changes to the index took effect on May 2, and a spokesperson for the index explained why they were made in a blog post published Wednesday.
It said that Tesla’s “lack of a low-carbon strategy” and “codes of business conduct,” along with racism and poor working conditions reported at Tesla’s factory in Fremont, California, affected the score. Tesla’s handling of an investigation by the National Highway Transportation Safety Administration also weighed on its score.
In Tesla’s first-quarter filing the company also disclosed it is being investigated for its handling of waste in the state of California, and that it had to pay a fine in Germany for failures to meet “take back” obligations in the country for spent batteries.
Meanwhile, California’s Department of Fair Employment and Housing sued Tesla over anti-Black harassment and discrimination in its Fremont car plant. The agency says it found evidence that Tesla routinely kept Black workers in low-level roles at the company, gave them more physically demanding and dangerous assignments and retaliated against them when they complained about racist slurs.
Last year, the National Labor Relations Board said Tesla had engaged in unfair labor practices, as well.
“While Tesla may be playing its part in taking fuel-powered cars off the road, it has fallen behind its peers when examined through a wider ESG lens,” the S&P spokesperson wrote.
Tesla CEO Elon Musk griped about the index on Wednesday morning on Twitter, where he boasts more than 90 million followers, saying S&P Global Ratings has “lost their integrity.”
In an earlier tweet on Musk wrote: “I am increasingly convinced that corporate ESG is the Devil Incarnate.”
In a company impact report that followed, Tesla wrote:
“Current environmental, social and governance (ESG) reporting does not measure the scope of positive impact on the world. Instead, it focuses on measuring the dollar value of risk / return. Individual investors — who entrust their money to ESG funds of large investment institutions — are perhaps unaware that their money can be used to buy shares of companies that make climate change worse, not better.”
In that report, Tesla contended that other automakers could achieve higher ESG ratings even if they barely reduce their greenhouse gas emissions and continue manufacturing internal combustion engine vehicles.
Tesla shares closed down more than 6% Wednesday amid a broad market sell-off. The company’s stock is down more than 30% this year.
Read More: Why Tesla was kicked out of the S&P 500’s ESG index