Index change event
S&P MidCap 400 & SmallCap 600 Additions & Index Changes: PATH & VSNT – 23rd December 2025
On 23 December 2025, S&P Dow Jones Indices announced 4 index changes affecting 4 companies in the S&P MidCap 400 and S&P SmallCap 600. The most notable move was UiPath joining the S&P MidCap 400.
Announced
2025-12-23
Effective
January 1, 2026 at 4:00:00 PM
Indexes Affected
S&P MidCap 400, S&P SmallCap 600
4
Index Changes in Total
2
Additions
2
Deletions
0
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 +5.23%, against +0.24% for the 2 deletions. The largest mover was UiPath, with a peak of +8.95%. The moves are measured from the first extended-hours price after the announcement, except for 2 names with no recorded trade after 17:15 ET, measured from the 16:00 ET close.
Synovus Financial went against the other deletion: its next-day open was +0.17% from the post-announcement price, while the 2 deletions averaged -0.43%.
In Short
4 index changes: 2 additions and 2 deletions.
No company moved between indexes, and the changes took effect on 2 dates.
Largest peak move: UiPath, +8.95% 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: UiPath (PATH)
1 company joined the S&P MidCap 400 and 1 left, effective 2 January 2026. UiPath is new to the S&P family and Synovus Financial left the S&P family. UiPath peaked at +8.95% by the next day's close.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
UiPath | PATH | S&P MidCap 400 | 01/02/2026 |
S&P SmallCap 600 Additions: Versant Media Group (VSNT)
1 company joined the S&P SmallCap 600 and 1 left, effective 6 January 2026. Versant Media Group is new to the S&P family and Brandywine Realty Trust left the S&P family. Versant Media Group peaked at +1.51% by the next day's close.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Versant Media Group | VSNT | S&P SmallCap 600 | 01/06/2026 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
UiPath | PATH | S&P MidCap 400 | 15.96 | 15.97 | +5.20% | +3.81% | +6.76% | +6.32% | +8.95% |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
Versant Media Group | VSNT | S&P SmallCap 600 | 45.75 | +0.52% | +1.51% |
Not a Investment Advice
This page is research about past price behaviour. It is not a recommendation to buy or sell.