Following the biggest daily surge in oil prices ever... and another major surge in prices today, things have gone a little bit slightly turbo for "investors" in one leveraged oil ETN.

Unprecedented spikes in price along with a record 'super-contango' have left the VelocityShares Daily 3x Inverse Crude exchange-traded notes, or DWTIF, worthless, according to Credit Suisse.

"Because the Closing Indicative Value of the ETNs will be $0 on April 2, 2020 and on all future days...

...investors who buy the ETNs at any time at any price above $0 will likely suffer a complete loss of their investment," Credit Suisse said.

As Bloomberg reports, that's one of the final chapters in a once-popular product that amassed more than $1 billion in assets at its peak over four years ago.

Until the last two days, the bearish triple-leveraged ETN, had screamed higher in 2020 as oil prices have collapsed at a record pace amid a double-whammy of supply- and demand-concerns. At its peak on March 18th, DWTIF was up a stunning 978% year-to-date...