S&P 500 Movers | Winners: DXCM, FDS, WDAY | Losers: GLW, COIN, F
On Friday, May 15, all three indices fell — the S&P 500 falling 1.24%, the Dow 30 falling 1.07%, and the Nasdaq 100 falling 1.54%. Losses were widespread, though not universal.

List of S&P 500 Winners
The following table shows the list of 10 stocks that generated the highest returns on the last trading day:
| # | Ticker | Company Name | 1-D Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | DXCM | DexCom | 6.6% | -7.1% |
| 2 | FDS | FactSet Research Systems | 6.4% | -26.4% |
| 3 | WDAY | Workday | 5.3% | -41.8% |
| 4 | NOW | ServiceNow | 5.0% | -37.9% |
| 5 | APA | APA | 5.0% | 62.0% |
| 6 | OXY | Occidental Petroleum | 4.9% | 45.7% |
| 7 | DVN | Devon Energy | 4.8% | 35.8% |
| 8 | ADBE | Adobe | 4.5% | -29.3% |
| 9 | TYL | Tyler Technologies | 4.3% | -31.3% |
| 10 | XOM | Exxon Mobil | 4.1% | 33.0% |
List of S&P 500 Losers
On the other hand, the following table shows the list of 10 stocks that generated the lowest returns:
| # | Ticker | Company Name | 1-D Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | GLW | Corning | -7.9% | 119.5% |
| 2 | COIN | Coinbase Global | -7.8% | -13.6% |
| 3 | F | Ford Motor | -7.5% | 4.5% |
| 4 | MU | Micron Technology | -6.6% | 154.0% |
| 5 | CIEN | Ciena | -6.3% | 137.1% |
| 6 | NEM | Newmont | -6.2% | 9.4% |
| 7 | INTC | Intel | -6.2% | 194.8% |
| 8 | SMCI | Super Micro Computer | -6.0% | 6.0% |
| 9 | AMD | Advanced Micro Devices | -5.7% | 98.0% |
| 10 | ALB | Albemarle | -5.6% | 27.8% |
Why does this matter? Significant stock moves – up or down – deserve your attention. Sharp declines in fundamentally strong names can offer smart buying opportunities. And when momentum aligns with solid fundamentals, riding the trend can be highly rewarding. Among these stocks, we find DexCom (DXCM) and FactSet Research Systems (FDS) attractive.
Smart investing isn’t about stock picking or prediction, it’s about asset allocation. See how Trefis’ Boston-based wealth management partner does it. It has included the High Quality Portfolio as part of its asset allocation strategy.
Movers – Last One Week
Analysing over the last one week (5 trading days), markets were split, as the S&P 500 rising 0.13%, the Dow 30 falling 0.17%, and the Nasdaq 100 falling 0.38% moved in different directions. Similar variation was seen across individual stocks.
List of 1-Week S&P 500 Winners
The following table shows the list of 10 stocks that generated the highest returns over the last week:
| # | Ticker | Company Name | 1-W Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | CSCO | Cisco Systems | 22.4% | 55.1% |
| 2 | PANW | Palo Alto Networks | 16.8% | 31.8% |
| 3 | ZBRA | Zebra Technologies | 14.7% | 6.8% |
| 4 | COHR | Coherent | 14.1% | 107.2% |
| 5 | CRWD | CrowdStrike | 12.6% | 26.7% |
| 6 | OXY | Occidental Petroleum | 12.4% | 45.7% |
| 7 | HUM | Humana | 11.0% | 19.7% |
| 8 | PM | Philip Morris International | 10.9% | 19.3% |
| 9 | F | Ford Motor | 10.1% | 4.5% |
| 10 | XOM | Exxon Mobil | 10.0% | 33.0% |
List of 1-Week S&P 500 Losers
Similarly, the following table shows the 10 stocks that were at the bottom in terms of returns:
| # | Ticker | Company Name | 1-W Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | CRL | Charles River Laboratories International | -15.1% | -24.4% |
| 2 | CVNA | Carvana | -13.8% | -20.4% |
| 3 | INTC | Intel | -12.9% | 194.8% |
| 4 | SMCI | Super Micro Computer | -12.2% | 6.0% |
| 5 | CEG | Constellation Energy | -11.9% | -24.1% |
| 6 | ALB | Albemarle | -11.4% | 27.8% |
| 7 | GPC | Genuine Parts | -11.3% | -23.8% |
| 8 | CBRE | CBRE | -11.2% | -19.2% |
| 9 | PSKY | Paramount Skydance | -10.8% | -25.8% |
| 10 | TECH | Bio-Techne | -10.5% | -26.3% |
Movers – Last One Month
On a slightly wider timeline over the last one month, all major indices rose in unison — the S&P 500 rising 5.22%, the Dow 30 rising 1.95%, and the Nasdaq 100 rising 10.60%. The strength was widespread, though a few names underperformed.
List of 1-Month S&P 500 Winners
The following table shows the 10 stocks that generated the maximum returns over the last one month:
| # | Ticker | Company Name | 1-M Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | DDOG | Datadog | 68.4% | 52.9% |
| 2 | INTC | Intel | 58.8% | 194.8% |
| 3 | MU | Micron Technology | 58.5% | 154.0% |
| 4 | AKAM | Akamai Technologies | 55.9% | 72.9% |
| 5 | SNDK | SanDisk | 53.1% | 493.0% |
| 6 | AMD | Advanced Micro Devices | 52.4% | 98.0% |
| 7 | HUM | Humana | 52.0% | 19.7% |
| 8 | QCOM | Qualcomm | 49.8% | 18.6% |
| 9 | STX | Seagate Technology | 49.6% | 189.4% |
| 10 | CNC | Centene | 49.4% | 41.6% |
List of 1-Month S&P 500 Losers
In the same period, these 10 stocks were at the bottom in terms of returns:
| # | Ticker | Company Name | 1-M Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | CHTR | Charter Communications | -40.5% | -32.8% |
| 2 | ZTS | Zoetis | -37.4% | -40.5% |
| 3 | TSCO | Tractor Supply | -31.5% | -38.6% |
| 4 | LULU | Lululemon Athletica | -26.9% | -42.7% |
| 5 | PODD | Insulet | -26.8% | -48.1% |
| 6 | EPAM | EPAM Systems | -26.6% | -54.6% |
| 7 | TECH | Bio-Techne | -24.5% | -26.3% |
| 8 | NRG | NRG Energy | -23.9% | -19.2% |
| 9 | CDW | CDW | -23.4% | -24.7% |
| 10 | NCLH | Norwegian Cruise Line | -22.5% | -30.5% |
Picking winners on a consistent basis is not an easy task – especially given the volatility associated with a single stock. Instead, the Trefis High Quality (HQ) Portfolio, with a collection of 30 stocks, has a track record of comfortably outperforming its benchmark that includes all 3 — the S&P 500, S&P mid-cap, and Russell 2000 indices. Why is that? As a group, HQ Portfolio stocks provided better returns with less risk versus the benchmark index; less of a roller-coaster ride, as evident in HQ Portfolio performance metrics.