S&P 500 Movers | Winners: MRNA, FDS, NOW | Losers: ON, WDC, STX
On Friday, June 26, markets stayed flat overall, as seen in the S&P 500 remaining flat, the Dow 30 falling 0.09%, and the Nasdaq 100 falling 1.09%. Still, certain stocks experienced more movement than the indices suggested.

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 | MRNA | Moderna | 12.6% | 128.1% |
| 2 | FDS | FactSet Research Systems | 11.0% | -19.3% |
| 3 | NOW | ServiceNow | 9.9% | -35.8% |
| 4 | WDAY | Workday | 9.2% | -42.2% |
| 5 | DDOG | Datadog | 8.5% | 76.3% |
| 6 | VEEV | Veeva Systems | 8.4% | -23.2% |
| 7 | LLY | Eli Lilly | 7.1% | 12.8% |
| 8 | APP | AppLovin | 7.0% | -29.2% |
| 9 | BIIB | Biogen | 7.0% | 22.8% |
| 10 | IT | Gartner | 6.6% | -46.5% |
List of S&P 500 Losers
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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 | ON | ON Semiconductor | -23.7% | 67.4% |
| 2 | WDC | Western Digital | -13.2% | 240.7% |
| 3 | STX | Seagate Technology | -12.2% | 227.6% |
| 4 | SNDK | SanDisk | -10.5% | 780.7% |
| 5 | FLEX | Flex | -9.0% | 142.8% |
| 6 | KEYS | Keysight Technologies | -8.7% | 61.8% |
| 7 | MPWR | Monolithic Power Systems | -8.7% | 45.2% |
| 8 | TXN | Texas Instruments | -8.5% | 66.4% |
| 9 | FIX | Comfort Systems USA | -8.1% | 98.9% |
| 10 | QCOM | Qualcomm | -7.6% | 11.8% |
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 FactSet Research Systems (FDS) and Workday (WDAY) attractive.
Individual stocks can soar or tank, but one thing matters: staying invested. The Trefis High Quality Portfolio helps you do that.
Movers – Last One Week
Analysing over the last one week (5 trading days), index performance was mixed — the S&P 500 falling 1.95%, the Dow 30 rising 0.60%, and the Nasdaq 100 falling 4.24% offered no clear consensus. Stock-specific factors shaped outcomes throughout the market.
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 | TECH | Bio-Techne | 22.5% | 21.1% |
| 2 | ABBV | AbbVie | 17.0% | 12.7% |
| 3 | CRL | Charles River Laboratories International | 16.6% | 8.2% |
| 4 | INCY | Incyte | 15.8% | 15.2% |
| 5 | UAL | United Airlines | 15.0% | 21.7% |
| 6 | IQV | IQVIA | 13.9% | -15.2% |
| 7 | GLW | Corning | 13.4% | 153.3% |
| 8 | RVTY | Revvity | 13.0% | 17.0% |
| 9 | MRK | Merck | 13.0% | 24.0% |
| 10 | CIEN | Ciena | 12.0% | 105.0% |
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 | ON | ON Semiconductor | -25.5% | 67.4% |
| 2 | WDC | Western Digital | -21.4% | 240.7% |
| 3 | ORCL | Oracle | -19.4% | -23.3% |
| 4 | ALB | Albemarle | -16.6% | -5.0% |
| 5 | QCOM | Qualcomm | -16.2% | 11.8% |
| 6 | MPWR | Monolithic Power Systems | -16.0% | 45.2% |
| 7 | STX | Seagate Technology | -15.9% | 227.6% |
| 8 | ARES | Ares Management | -15.6% | -30.9% |
| 9 | MRVL | Marvell Technology | -14.1% | 214.3% |
| 10 | APO | Apollo Global Management | -14.0% | -17.6% |
Movers – Last One Month
On a slightly wider timeline over the last one month, markets were split, as the S&P 500 falling 2.21%, the Dow 30 rising 2.43%, and the Nasdaq 100 falling 2.85% moved in different directions. Similar variation was seen across individual stocks.
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 | TECH | Bio-Techne | 47.6% | 21.1% |
| 2 | MRNA | Moderna | 41.3% | 128.1% |
| 3 | AMAT | Applied Materials | 39.8% | 144.5% |
| 4 | MRVL | Marvell Technology | 34.3% | 214.3% |
| 5 | SNDK | SanDisk | 31.5% | 780.7% |
| 6 | CRL | Charles River Laboratories International | 31.2% | 8.2% |
| 7 | DELL | Dell Technologies | 30.8% | 218.7% |
| 8 | HOOD | Robinhood Markets | 29.5% | -12.7% |
| 9 | DLTR | Dollar Tree | 29.2% | 0.7% |
| 10 | KLAC | KLA | 27.0% | 105.2% |
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 | CBOE | Cboe Global Markets | -30.2% | -3.1% |
| 2 | ON | ON Semiconductor | -27.4% | 67.4% |
| 3 | ACN | Accenture | -26.9% | -51.2% |
| 4 | CTSH | Cognizant Technology Solutions | -24.7% | -51.2% |
| 5 | ALB | Albemarle | -24.5% | -5.0% |
| 6 | FOXA | Fox | -23.5% | -31.1% |
| 7 | ORCL | Oracle | -22.2% | -23.3% |
| 8 | LDOS | Leidos | -21.8% | -43.3% |
| 9 | FOX | Fox | -21.7% | -28.9% |
| 10 | AKAM | Akamai Technologies | -21.6% | 29.8% |
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.