Index change event
S&P SmallCap 600 Additions & Index Changes: ACT – 9th April 2025
On 9 April 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. Enact Holdings replaced SolarWinds in the S&P SmallCap 600.
Announced
2025-04-09
Effective
April 15, 2025 at 5:00:00 PM
Indexes Affected
S&P SmallCap 600
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, Enact Holdings, the only addition with price data, had peaked at +4.59%, against +0.65% for SolarWinds, the only deletion with price data. The moves are measured from the first extended-hours price after the 17:15 ET announcement.
With one addition and one deletion priced, there is no group to stand out from: Enact Holdings opened the next day at +2.21% and SolarWinds at +0.59%, both 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: Enact Holdings, +4.59% 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 |
|---|---|---|---|---|
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
S&P SmallCap 600 Additions: Enact Holdings (ACT)
1 company joined the S&P SmallCap 600 and 1 left, effective 16 April 2025. Enact Holdings is new to the S&P family and SolarWinds left the S&P family. Enact Holdings peaked at +4.59% by the next day's close.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Enact Holdings | ACT | S&P SmallCap 600 | 04/16/2025 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
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 |
|---|---|---|---|---|---|---|---|---|---|---|
Enact Holdings | ACT | S&P SmallCap 600 | 33.37 | 34.87 | +1.49% | +0.66% | +1.20% | +2.21% | +4.59% |
Not a Investment Advice
This page is research about past price behaviour. It is not a recommendation to buy or sell.