NEW YORK — Tesla has acquired around $1.5 billion in Bitcoin under an investment policy at the electric car maker headed by Elon Musk, and it plans to begin accepting the digital currency as payment for vehicles soon.

The California company revealed the new strategy in a filing with the U.S. Securities and Exchange Commission early Monday, saying its investment in digital currency and other “alternative reserve assets” may grow.

Bitcoin spiked 14% and appeared to briefly hit an all-time high. Shares of Tesla moved higher as well.

In its fourth quarter earnings report last month, Tesla said it had cash and cash equivalents of $19.4 billion.