In their report, Tesla stated that "Conversions in Q2 added $936M to our balance sheet." Assuming this is all Bitcoin, this suggests Tesla sold at around $28,900—a 7–10% decrease from their buy price. The company stated in a shareholder presentation that the "Bitcoin impairment" had damaged the company's Q2 profitability.
This is grim news for some crypto enthusiasts, a group that overlaps considerably with Tesla and Musk superfans. Musk's Bitcoin purchases helped to convince many new people to buy in, and the news of Tesla's decision caused a sharp 2.5% decrease in Bitcoin prices.