Elon Musk is back on top. The Tesla Inc. chief executive officer’s wealth rose to $199.9 billion after the rocket company he founded completed another funding round, vaulting him atop the Bloomberg Billionaires Index for the second time this year. Tesla Inc. trimmed prices for its cheapest Model 3 and Model Y while raising prices for the Performance versions, according to the electric carmaker’s website. The Model 3 Standard Range Plus is now 2.6% cheaper at $36,990 in the U.S. The price of the Model Y Standard Range was cut by 4.8% to $39,990. North America’s first Bitcoin ETF got off to a stellar start in its debut, with investors exchanging $165 million worth of shares. After a relentless surge in the world’s largest digital currency, the first Bitcoin productthat’s officially labeled an exchange-traded fund debuted Thursday in Toronto. It’s worth noting, though, that Europe has several crypto-tracking products that function like an ETF. The new fund, called Purpose Bitcoin ETF (ticker BTCC), invests directly in “physical/digital Bitcoin,” issuer Purpose Investments Inc. said in a statement.