Index change event
S&P SmallCap 600 Additions & Index Changes: PTON & UTI – 21st May 2026
On 21 May 2026, S&P Dow Jones Indices announced 4 index changes affecting 4 companies in the S&P SmallCap 600. The most notable move was Universal Technical Institute joining the S&P SmallCap 600.
Announced
2026-05-21
Effective
May 26, 2026 at 5:00:00 PM
Indexes Affected
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 +11.23%, against +0.67% for the 2 deletions. The largest mover was Universal Technical Institute, with a peak of +11.64%. 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.
No name moved against its group: every addition with price data opened the next day above the post-announcement price and every deletion with price data opened above it.
In Short
4 index changes: 2 additions and 2 deletions.
No company moved from one S&P index to another in this announcement.
Largest peak move: Universal Technical Institute, +11.64% 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: Peloton Interactive (PTON) and Universal Technical Institute (UTI)
2 companies joined the S&P SmallCap 600 and 2 left, effective 27 May 2026. Peloton Interactive and Universal Technical Institute are new to the S&P family and Enviri Corporation and Veris Residential left the S&P family. The 2 additions with price data peaked at an average of +11.23% by the next day's close, led by Universal Technical Institute at +11.64%.
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Peloton Interactive | PTON | S&P SmallCap 600 | 05/27/2026 | |
Universal Technical Institute | UTI | S&P SmallCap 600 | 05/27/2026 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
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 |
|---|---|---|---|---|---|---|---|---|---|---|
Peloton Interactive | PTON | S&P SmallCap 600 | 5.18 | 5.22 | +5.75% | +6.70% | +5.35% | +3.07% | +10.82% | |
Universal Technical Institute | UTI | S&P SmallCap 600 | 36.60 | 37.10 | +1.62% | +3.80% | +4.04% | +6.58% | +11.64% |
Not a Investment Advice
This page is research about past price behaviour. It is not a recommendation to buy or sell.