Index change event
S&P MidCap 400 & SmallCap 600 Additions & Index Changes: MOH & ROAD – 16th July 2026
On 16 July 2026, S&P Dow Jones Indices announced 4 index changes affecting 3 companies in the S&P MidCap 400 and S&P SmallCap 600. The most notable move was Molina Healthcare joining the S&P MidCap 400 from the S&P SmallCap 600.
Announced
2026-07-16
Effective
July 21, 2026 at 5:00:00 PM
Indexes Affected
S&P MidCap 400, S&P SmallCap 600
4
Index Changes in Total
2
Additions
2
Deletions
1
Companies that changed index
What happened to the prices
By the next day's close, the 2 additions with price data had peaked at an average of +3.02%, against +1.36% for National Storage Affiliates Trust, the only deletion with price data. The largest mover was Construction Partners, with a peak of +5.15%. The moves are measured from the first extended-hours price after the announcement, except for 1 name with no recorded trade after 17:15 ET, measured from the 16:00 ET close.
Molina Healthcare went against the other addition: its next-day open was -0.48% from the post-announcement price, while the 2 additions averaged +0.66%.
In Short
4 index changes: 2 additions and 2 deletions.
1 company moved from one S&P index to another, out of 3 in total.
Largest peak move: Construction Partners, +5.15% by the next day's close.
The changes, index by index
An empty cell means the company was not in the S&P family before, or left it.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
S&P MidCap 400 Additions: Molina Healthcare (MOH)
1 company joined the S&P MidCap 400 and 1 left, effective 22 July 2026. Molina Healthcare moved up from the S&P SmallCap 600 and National Storage Affiliates Trust left the S&P family. Molina Healthcare peaked at +0.88% by the next day's close.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Molina Healthcare | MOH | S&P SmallCap 600 | S&P MidCap 400 | 07/22/2026 |
S&P SmallCap 600 Additions: Construction Partners (ROAD)
1 company joined the S&P SmallCap 600 and 1 left, effective 22 July 2026. Construction Partners is new to the S&P family and Molina Healthcare moved up to the S&P MidCap 400. Construction Partners peaked at +5.15% by the next day's close.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Construction Partners | ROAD | S&P SmallCap 600 | 07/22/2026 |
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Price reaction
The close price is the last price before the announcement. Percentages are measured from the open price after the announcement, or from the close for a company with no price after it.
S&P 500 Additions Changes
Company | Ticker | Source Index | Final Index | Close Price | Open Price at Announcement | % Change +5 min | % Change +30 min | % Change at 20:00 Hrs | % Change by Next Day Open | % Highest Change by Next Day Close |
|---|---|---|---|---|---|---|---|---|---|---|
S&P MidCap 400 Additions Changes
Company | Ticker | Source Index | Final Index | Close Price | Open Price at Announcement | % Change +5 min | % Change +30 min | % Change at 20:00 Hrs | % Change by Next Day Open | % Highest Change by Next Day Close |
|---|---|---|---|---|---|---|---|---|---|---|
Molina Healthcare | MOH | S&P SmallCap 600 | S&P MidCap 400 | 224.82 | 224.69 | -0.53% | -0.53% | -0.53% | -0.48% | +0.88% |
S&P SmallCap 600 Additions Changes
Not a Investment Advice
Company | Ticker | Source Index | Final Index | Close Price | Open Price at Announcement | % Change +5 min | % Change +30 min | % Change at 20:00 Hrs | % Change by Next Day Open | % Highest Change by Next Day Close |
|---|---|---|---|---|---|---|---|---|---|---|
Construction Partners | ROAD | S&P SmallCap 600 | 102.41 | 103.89 | +2.80% | +2.80% | +2.80% | +1.80% | +5.15% |
Not a Investment Advice
This page is research about past price behaviour. It is not a recommendation to buy or sell.