S&P 500 Movers | Winners: SMCI, WAB, DELL | Losers: GEV, NOW, PTC
A quiet market surface hides significant moves in individual stocks, raising questions about persistence and noise.
The S&P 500 returned -0.1% in a quiet session for the major indices. Yet beneath that surface, Super Micro Computer (SMCI) delivered a return of +19.8%, an enormous gain on a day the market barely moved. The key question for any investor is whether such an extreme move is a one-off event or part of a larger story. The day’s full list of winners and losers offers the first layer of evidence.
Wednesday’s S&P 500 Winners
The 10 stocks with the highest returns on the last trading day:
| # | Ticker | Company Name | 1-D Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | SMCI | Super Micro Computer | 19.8% | 4.4% |
| 2 | WAB | Westinghouse Air Brake Technologies | 10.0% | 36.2% |
| 3 | DELL | Dell Technologies | 9.3% | 254.2% |
| 4 | EQT | EQT | 8.5% | 1.3% |
| 5 | NRG | NRG Energy | 6.4% | -11.6% |
| 6 | EXE | Expand Energy | 5.2% | -14.6% |
| 7 | CME | CME | 5.0% | -6.1% |
| 8 | CEG | Constellation Energy | 4.8% | -22.0% |
| 9 | IP | International Paper | 4.8% | -0.9% |
| 10 | FCX | Freeport-McMoRan | 3.9% | 28.9% |
Wednesday’s S&P 500 Losers
And the 10 stocks with the lowest returns:
| # | Ticker | Company Name | 1-D Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | GEV | GE Vernova | -8.7% | 51.0% |
| 2 | NOW | ServiceNow | -6.5% | -37.7% |
| 3 | PTC | PTC | -6.3% | -35.1% |
| 4 | WDAY | Workday | -6.2% | -38.3% |
| 5 | PLTR | Palantir Technologies | -6.1% | -29.9% |
| 6 | COIN | Coinbase Global | -5.5% | -26.5% |
| 7 | DASH | DoorDash | -5.5% | -21.5% |
| 8 | TYL | Tyler Technologies | -5.1% | -37.4% |
| 9 | GLW | Corning | -5.1% | 76.5% |
| 10 | DXCM | DexCom | -4.4% | 7.6% |
Some moves are not a one-day story.
While most names on the daily lists are fresh, the persistence of weakness in Corning (GLW) stands out. The stock appears on both the one-day and one-month losers lists. Its one-month return is a significant -26.6%. The data shows its weakness has been building for weeks; even excluding today’s session, the stock still lost 22.6% over the other sessions this month.
Movers Over The Last Week
Widening the window to five trading days, these are the strongest and weakest S&P 500 names:
| # | Ticker | Company Name | 1-W Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | SMCI | Super Micro Computer | 13.6% | 4.4% |
| 2 | TRV | Travelers Companies | 13.0% | 29.3% |
| 3 | ABT | Abbott Laboratories | 12.7% | -18.2% |
| 4 | WAB | Westinghouse Air Brake Technologies | 11.7% | 36.2% |
| 5 | HAS | Hasbro | 10.6% | 10.2% |
| 6 | LITE | Lumentum | 10.3% | 125.1% |
| 7 | SWKS | Skyworks Solutions | 9.8% | 1.7% |
| 8 | EQT | EQT | 9.7% | 1.3% |
| 9 | STX | Seagate Technology | 9.6% | 230.6% |
| 10 | WDC | Western Digital | 8.3% | 223.4% |
| # | Ticker | Company Name | 1-W Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | MRNA | Moderna | -15.0% | 96.9% |
| 2 | ISRG | Intuitive Surgical | -12.4% | -39.8% |
| 3 | GLW | Corning | -11.7% | 76.5% |
| 4 | SNPS | Synopsys | -11.2% | -19.6% |
| 5 | CVNA | Carvana | -11.1% | -25.7% |
| 6 | DHR | Danaher | -10.8% | -21.4% |
| 7 | HOOD | Robinhood Markets | -9.6% | -7.6% |
| 8 | CDNS | Cadence Design Systems | -9.3% | 7.8% |
| 9 | TTD | Trade Desk | -9.2% | -53.7% |
| 10 | AXON | Axon Enterprise | -9.2% | -13.5% |
Movers Over The Last Month
And over the last 21 trading days:
| # | Ticker | Company Name | 1-M Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | PYPL | PayPal | 31.1% | -4.3% |
| 2 | TECH | Bio-Techne | 29.1% | 22.4% |
| 3 | MPC | Marathon Petroleum | 27.7% | 95.9% |
| 4 | VLO | Valero Energy | 27.5% | 93.1% |
| 5 | PSX | Phillips 66 | 25.5% | 66.4% |
| 6 | CF | CF Industries | 22.9% | 66.2% |
| 7 | GPN | Global Payments | 21.3% | 2.8% |
| 8 | VEEV | Veeva Systems | 20.5% | -17.3% |
| 9 | CRL | Charles River Laboratories International | 20.5% | 9.6% |
| 10 | TPL | Texas Pacific Land | 19.9% | 51.2% |
| # | Ticker | Company Name | 1-M Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | MRVL | Marvell Technology | -31.4% | 148.6% |
| 2 | ON | ON Semiconductor | -29.8% | 70.5% |
| 3 | SNDK | SanDisk | -29.7% | 573.7% |
| 4 | ORCL | Oracle | -27.9% | -34.8% |
| 5 | GNRC | Generac | -27.8% | 56.5% |
| 6 | INTC | Intel | -27.2% | 178.1% |
| 7 | COHR | Coherent | -26.6% | 69.1% |
| 8 | GLW | Corning | -26.6% | 76.5% |
| 9 | ALB | Albemarle | -25.0% | -16.5% |
| 10 | WDC | Western Digital | -24.0% | 223.4% |
A movers list is a map of attention, not a set of instructions.
The tables of extremes shown earlier are best used as a starting point for research. A large daily return, positive or negative, is simply information that the market’s attention is focused on a company and its perceived risks have been repriced. The disciplined follow-up is not to chase the performance, but to investigate the fundamentals of the business behind the ticker.
The next step is never to trade the list; it is to test it. Our Guidance Momentum screen shows which risers have management raising guidance behind them, and our Buy the Dip screen shows which of the fallers still generate the growth and cash that make a recovery plausible.
Today’s Winner Is Tomorrow’s Loser Often Enough
The movers list is the most honest picture of single-stock risk the market prints each day: the same volatility that makes the winners column also fills the losers column, and no one reliably knows which side a stock lands on next.
That is the case for owning a disciplined basket instead of chasing the tape. The Trefis High Quality (HQ) Portfolio holds roughly 30 businesses selected for consistent cash generation, strong margins, and resilient balance sheets, sized and rebalanced with rules. It has a track record of outpacing a benchmark that combines all major indices – the S&P 500, S&P Mid-cap, and Russell 2000. Watch the movers for information; let the portfolio do the compounding.