Corteva Inc. (NYSE:CTVA) stock plunged about 82% Thursday after the agricultural company completed the spin-off of its seed and genetics business into Vylor Inc. (NYSE:VYLR).

The sharp decline largely reflects the transfer of Vylor's value out of Corteva rather than an equivalent destruction of shareholder value.

Corteva Completes Vylor Spin-Off

Corteva said Thursday it successfully completed the separation of its seed business. The company will now operate as a pure-play global crop protection business.

Corteva shareholders of record as of Sept. 24 were entitled to receive Vylor shares while retaining their Corteva holdings.

As a result, part of the value previously reflected in Corteva's stock is now represented by the separately traded Vylor business. That makes Corteva's post-spin share price difficult to compare directly with its pre-separation level.

Court Clears Separation

The transaction moved forward after a last-minute legal challenge.

The U.S. Court of Appeals for the Fourth Circuit on Wednesday reversed a procedural ruling involving California's effort to delay the separation. However, the appeals court did not rule on the merits of California's request.

The case returned to the District Court, which denied California's motion to block the transaction. Corteva then proceeded with the distribution.

Vylor Takes On Existing Debt

Corteva also said Thursday that Vylor completed the final stage of previously announced private debt exchange offers tied to the separation.

Eligible holders tendered about $434.8 million of EIDP's 2.300% senior notes due 2030, $476.2 million of its 5.125% notes due 2032 and $527.6 million of its 4.800% notes due 2033.

Under the exchange, participating investors will receive corresponding Vylor notes. The new notes carry the same interest rates, maturity dates and interest payment dates as the related EIDP notes.

The exchange was conditioned on completion of the Corteva separation and was expected to settle alongside the transaction.

Corteva Becomes Pure-Play Crop Protection Company

Following the separation, Corteva said its crop protection business has nearly 9,000 employees serving growers in about 110 countries.

The company said the business increased revenue by more than $1 billion between 2020 and 2025. Segment operating EBITDA margins expanded by about 250 basis points over that period.

The company also highlighted an $11 billion crop protection pipeline. It expects to launch 12 new active ingredients over the next decade, including five biological products.

About 65% of sales now come from differentiated technologies, according to the company.

CTVA Price Action: Corteva shares were down 81.35% at $14.48 during premarket trading on Thursday, according to market data.