Index change event
S&P SmallCap 600 Additions & Index Changes: KGS – 1st August 2025
On 1 August 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. Kodiak Gas Services replaced NV5 Global in the S&P SmallCap 600.
Announced
2025-08-01
Effective
August 5, 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, Kodiak Gas Services, the only addition with price data, had peaked at +0.33%; the deletion, NV5 Global, has no next-day prices. The moves are measured from the first extended-hours price after the 17:15 ET announcement.
Only Kodiak Gas Services has next-day prices, so there is no group to compare it with: it opened the next day at -1.02% 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: Kodiak Gas Services, +0.33% 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: Kodiak Gas Services (KGS)
1 company joined the S&P SmallCap 600 and 1 left, effective 6 August 2025. Kodiak Gas Services is new to the S&P family and NV5 Global left the S&P family. Kodiak Gas Services peaked at +0.33% by the next day's close.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Kodiak Gas Services | KGS | S&P SmallCap 600 | 08/06/2025 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
Kodiak Gas Services | KGS | S&P SmallCap 600 | 31.30 | 33.27 | 0.00% | -0.15% | -0.78% | -1.02% | +0.33% |
Not a Investment Advice
This page is research about past price behaviour. It is not a recommendation to buy or sell.