Elon Musk is again valued at around $1 trillion in net worth after a market rally lifts the value of his holdings. Quartz reports Forbes estimated Musk’s net worth at $1 trillion on Monday, up about $30.6 billion from Friday’s close. NDTV and Mint similarly attribute the change to gains in his stakes in SpaceX and Tesla.

According to NDTV, Musk’s fortune rises to about $1.04 trillion, citing the Bloomberg Billionaires Index, with the increase driven by higher shares in SpaceX and Tesla Inc. Mint also reports a move back to trillionaire status, saying a sharp rise in SpaceX shares is the main driver, while Tesla contributes to the rebound. Across the outlets, the differing figures reflect different wealth-tracking methodologies and reported indexes, but the underlying cause is the same: gains in the public market values of SpaceX-related interests and Tesla stock.