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Index change event
S&P index changes, effective 13 and 23 March 2026
The March rebalance was the largest of the year: four new S&P 500 names, four changes in the S&P 100, and a wide turnover in the SmallCap 600.
Announced
2026-03-06
Effective
March 22, 2026 at 5:00:00 PM
Indexes Affected
4
What happened to the prices
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Four semiconductor and power names joined the S&P 100.
Four financial and consumer names left the S&P 100.
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The changes, index by index
An empty cell means the company was not in the S&P family before, or left it.
S&P 500
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Coherent | COHR | S&P MidCap 400 | S&P 500 | 03/23/2026 |
EchoStar | SATS | S&P MidCap 400 | S&P 500 | 03/23/2026 |
Lumentum Holdings | LITE | S&P MidCap 400 | S&P 500 | 03/23/2026 |
Vertiv Holdings | VRT | S&P 500 | 03/23/2026 |
S&P MidCap 400
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
CareTrust REIT | CTRE | S&P SmallCap 600 | S&P MidCap 400 | 03/23/2026 |
InterDigital | IDCC | S&P SmallCap 600 | S&P MidCap 400 | 03/23/2026 |
Moog | MOG.A | S&P SmallCap 600 | S&P MidCap 400 | 03/23/2026 |
SiTime | SITM | S&P SmallCap 600 | S&P MidCap 400 | 03/23/2026 |
Solstice Advanced Materials | SOLS | S&P SmallCap 600 | S&P MidCap 400 | 03/23/2026 |
Vicor | VICR | S&P SmallCap 600 | S&P MidCap 400 | 03/23/2026 |
S&P SmallCap 600
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
ASGN | ASGN | S&P MidCap 400 | S&P SmallCap 600 | 03/23/2026 |
Argan | AGX | S&P SmallCap 600 | 03/23/2026 | |
Kemper | KMPR | S&P MidCap 400 | S&P SmallCap 600 | 03/23/2026 |
Lamb Weston Holdings | LW | S&P 500 | S&P SmallCap 600 | 03/23/2026 |
Laureate Education | LAUR | S&P SmallCap 600 | 03/23/2026 | |
Life Time Group Holdings | LTH | S&P SmallCap 600 | 03/23/2026 | |
Life360 | LIF | S&P SmallCap 600 | 03/23/2026 | |
Lyft | LYFT | S&P SmallCap 600 | 03/23/2026 | |
Match Group | MTCH | S&P 500 | S&P SmallCap 600 | 03/23/2026 |
Molina Healthcare | MOH | S&P 500 | S&P SmallCap 600 | 03/23/2026 |
NAPCO Security Technologies | NSSC | S&P SmallCap 600 | 03/13/2026 | |
Paycom Software | PAYC | S&P 500 | S&P SmallCap 600 | 03/23/2026 |
Rithm Capital | RITM | S&P SmallCap 600 | 03/23/2026 | |
Sphere Entertainment | SPHR | S&P SmallCap 600 | 03/23/2026 | |
VSE | VSEC | S&P SmallCap 600 | 03/23/2026 | |
ZoomInfo Technologies | GTM | S&P MidCap 400 | S&P SmallCap 600 | 03/23/2026 |
S&P 100
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Applied Materials | AMAT | S&P 100 | 03/23/2026 | |
GE Vernova | GEV | S&P 100 | 03/23/2026 | |
Lam Research | LRCX | S&P 100 | 03/23/2026 | |
Micron Technology | MU | S&P 100 | 03/23/2026 |
Price reaction
The close price is the last price before the announcement. All percentages are measured from the open price after the announcement.
Additions
Company | Ticker | Close Price | Open Price at Announcement | % Change +5 min | % Change +30 min | % Change at 20:00 Hrs | % Highest Change by Next Day Close |
|---|---|---|---|---|---|---|---|
Applied Materials | AMAT | 324.74 | +4.44% | ||||
GE Vernova | GEV | 789.23 | +5.23% | ||||
Lam Research | LRCX | 199.33 | +6.11% | ||||
Micron Technology | MU | 370.30 | +5.32% | ||||
Coherent | COHR | 235.72 | +7.91% | ||||
EchoStar | SATS | ||||||
Lumentum Holdings | LITE | 558.44 | +14.79% | ||||
Vertiv Holdings | VRT | 241.78 | +10.29% | ||||
CareTrust REIT | CTRE | 39.94 | +0.79% | ||||
InterDigital | IDCC | 357.06 | +2.22% | ||||
Moog | MOG.A | 316.80 | +0.29% | ||||
SiTime | SITM | 327.35 | +9.22% | ||||
Solstice Advanced Materials | SOLS | 72.17 | +2.44% | ||||
Vicor | VICR | 162.67 | +4.91% | ||||
ASGN | ASGN | ||||||
Argan | AGX | 414.20 | +12.86% | ||||
Kemper | KMPR | 31.78 | +0.44% | ||||
Lamb Weston Holdings | LW | 46.03 | +1.59% | ||||
Laureate Education | LAUR | 31.67 | +8.83% | ||||
Life Time Group Holdings | LTH | 25.37 | +7.09% | ||||
Life360 | LIF | 45.08 | +6.46% | ||||
Lyft | LYFT | 13.25 | +4.57% | ||||
Match Group | MTCH | 30.47 | +2.25% | ||||
Molina Healthcare | MOH | 144.47 | +2.57% | ||||
NAPCO Security Technologies | NSSC | 41.16 | +5.10% | ||||
Paycom Software | PAYC | 138.01 | +0.62% | ||||
Rithm Capital | RITM | 9.65 | +2.69% | ||||
Sphere Entertainment | SPHR | 112.82 | +5.91% | ||||
VSE | VSEC | 209.39 | +6.01% | ||||
ZoomInfo Technologies | GTM | 6.56 | +0.23% |
Deletions
Company | Ticker | Close Price | Open Price at Announcement | % Change +5 min | % Change +30 min | % Change at 20:00 Hrs | % Highest Change by Next Day Close |
|---|---|---|---|---|---|---|---|
American Intl Group | AIG | 78.72 | -0.24% | ||||
MetLife | MET | 71.83 | -1.10% | ||||
PayPal Holdings | PYPL | 46.97 | -0.95% | ||||
Target | TGT | 120.79 | -0.52% | ||||
AH Realty Trust | AHRT | 6.22 | -2.73% | ||||
ANGI | ANGI | 8.82 | +0.34% | ||||
Alexander & Baldwin | ALEX | ||||||
Bloomin' Brands | BLMN | 6.01 | -2.66% | ||||
Cars.com | CARS | 8.12 | -1.11% | ||||
Dave & Buster's Entertainment | PLAY | 13.97 | -0.04% | ||||
KKR Real Estate Finance Trust | KREF | 7.18 | -0.70% | ||||
Myriad Genetics | MYGN | 5.15 | +1.55% | ||||
Summit Hotel Properties | INN | 4.51 | -1.55% | ||||
SunCoke Energy | SXC | 5.92 | -0.34% |
Not a Investment Advice
This page is research about past price behaviour. It is not a recommendation to buy or sell.
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