Index change event
S&P MidCap 400 Additions & Index Changes: SARO – 16th January 2026
On 16 January 2026, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P MidCap 400. StandardAero replaced Frontier Communications Parent in the S&P MidCap 400.
Announced
2026-01-16
Effective
January 21, 2026 at 4:00:00 PM
Indexes Affected
S&P MidCap 400
2
Index Changes in Total
1
Additions
1
Deletions
0
Companies that changed index
What happened to the prices
By the next day's close, StandardAero, the only addition with price data, had peaked at +6.46%; the deletion, Frontier Communications Parent, has no next-day prices. The moves are measured from the first extended-hours price after the 17:15 ET announcement.
Only StandardAero has next-day prices, so there is no group to compare it with: it opened the next day at +5.48% from the first price after the announcement.
In Short
2 index changes: 1 addition and 1 deletion.
No company moved from one S&P index to another in this announcement.
Largest peak move: StandardAero, +6.46% 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: StandardAero (SARO)
1 company joined the S&P MidCap 400 and 1 left, effective 22 January 2026. StandardAero is new to the S&P family and Frontier Communications Parent left the S&P family. StandardAero peaked at +6.46% by the next day's close.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
StandardAero | SARO | S&P MidCap 400 | 01/22/2026 |
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Price reaction
The close price is the last price before the announcement. All percentages are measured from the open price after the announcement.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
StandardAero | SARO | S&P MidCap 400 | 32.48 | 32.64 | +5.51% | +5.64% | +5.73% | +5.48% | +6.46% |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
Not a Investment Advice
This page is research about past price behaviour. It is not a recommendation to buy or sell.