S&P Dow Jones Indices added Vylor to the S&P 500 on October 1, the day the separation closed. Corteva’s deletion from the S&P 500 and addition to the MidCap 400 become effective before trading opens October 6.
The legal spinnee is therefore the company carrying the large-cap index membership. The former parent keeps the Corteva name and CTVA ticker but moves into the mid-cap benchmark as a focused crop-protection company.
Vylor joined the S&P 500 on the distribution date
Corteva shareholders received one Vylor share for each Corteva share held on the September 24 record date. The distribution was completed October 1, and Vylor began regular-way trading on the New York Stock Exchange under VYLR.
S&P added Vylor to the S&P 500 that day. Corteva will replace Olin ($OLN) in the S&P MidCap 400 before the October 6 open, while Olin moves to the S&P SmallCap 600.
| Company | Ticker | Index after Oct. 6 rebalance |
|---|---|---|
| Vylor | VYLR | S&P 500 |
| Corteva | CTVA | S&P MidCap 400 |
| Olin | OLN | S&P SmallCap 600 |
S&P said the remaining Corteva is more representative of the mid-cap market after the separation. Vylor contains the seed and advanced-genetics operations, while Corteva now consists primarily of crop protection.
The accounting treatment also follows Vylor
The legal form can make the index assignment look counterintuitive. Corteva distributed Vylor to shareholders, so Vylor is the legal spinnee. Corteva’s October 1 Form 8-K says Vylor is nevertheless treated as the accounting successor to pre-spinoff Corteva because of its relative significance.
As a result, Corteva’s historical consolidated financial statements become Vylor’s historical financial statements for periods before the separation. The index treatment reaches the same practical destination: Vylor carries forward the S&P 500 membership, while the continuing CTVA company enters the MidCap 400.
Vylor changes sectors on October 6
S&P is also changing Vylor’s Global Industry Classification Standard sector to Consumer Staples effective October 6. Corteva remains in Materials as it enters the S&P MidCap 400.
Benchmark changes create mechanical portfolio adjustments for funds that track the affected indexes. S&P 500 portfolios need Vylor exposure, MidCap 400 portfolios need Corteva, and sector-index products may also adjust when Vylor moves into Consumer Staples.
Those index flows can influence trading around an effective date without changing the underlying businesses. After the rebalance, the two stocks still have to be valued on their own earnings, balance sheets and prospects.
The post-spinoff identities are now clearer
The completed separation leaves Vylor with the historical financial statements, the S&P 500 membership and a Consumer Staples classification. Corteva retains the CTVA ticker and corporate name but now represents a smaller, crop-protection-focused company in the S&P MidCap 400.
We covered the Vylor distribution terms, trading dates and capital structure before the separation. Vylor is also now listed on our Recent Spinoffs page with the other completed 2026 transactions.