S&P 500 Movers | Winners: FICO, MDT, ZBH | Losers: CIEN, LITE, COHR
On Monday, October 12, the S&P 500 dipped 0.1%, the Nasdaq-100 declined 0.7% and the Dow Jones Industrial Average gained 0.4%. Over the past week the S&P 500 is up 0.4%, and over the past month it is up 2.0%.
Within the S&P 500, 319 stocks rose and 181 fell. The day’s best return belonged to Fair Isaac (FICO) (+10.8%) and the worst to Ciena (CIEN) (-10.0%).

Monday’s S&P 500 Winners
The 10 S&P 500 stocks with the highest returns on Monday:
| # | Ticker | Company Name | 1-D Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | FICO | Fair Isaac | 10.8% | -56.2% |
| 2 | MDT | Medtronic | 3.9% | -1.8% |
| 3 | ZBH | Zimmer Biomet | 3.4% | 3.3% |
| 4 | META | Meta Platforms | 3.4% | 12.8% |
| 5 | PODD | Insulet | 3.3% | -50.8% |
| 6 | TYL | Tyler Technologies | 3.2% | -25.1% |
| 7 | KDP | Keurig Dr Pepper | 3.1% | 20.6% |
| 8 | STZ | Constellation Brands | 3.1% | -6.4% |
| 9 | GEHC | GE HealthCare Technologies | 3.0% | -17.3% |
| 10 | BDX | Becton Dickinson | 2.8% | n/a |
Monday’s S&P 500 Losers
And the 10 S&P 500 stocks with the lowest returns on Monday:
| # | Ticker | Company Name | 1-D Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | CIEN | Ciena | -10.0% | 73.2% |
| 2 | LITE | Lumentum | -9.8% | 170.1% |
| 3 | COHR | Coherent | -7.9% | 56.0% |
| 4 | CVNA | Carvana | -6.6% | -29.5% |
| 5 | BE | Bloom Energy | -6.5% | 201.9% |
| 6 | GLW | Corning | -6.0% | 69.1% |
| 7 | SNDK | SanDisk | -6.0% | 526.6% |
| 8 | MRNA | Moderna | -5.0% | n/a |
| 9 | AKAM | Akamai Technologies | -5.0% | 16.5% |
| 10 | MPWR | Monolithic Power Systems | -4.8% | 46.3% |
Monday’s Extremes Were Mostly Fresh Moves
None of the names on the one-day lists shows up on the same side of the one-month lists: Monday’s extremes were new moves, not the continuation of a run.
Movers Over The Last Week
Widening the window to five trading days, these are the strongest and weakest names in the S&P 500:
Winners
| # | Ticker | Company Name | 1-W Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | CCI | Crown Castle | 19.9% | -5.3% |
| 2 | SBAC | SBA Communications | 13.9% | -2.8% |
| 3 | AMT | American Tower | 12.5% | 7.2% |
| 4 | STZ | Constellation Brands | 11.6% | -6.4% |
| 5 | PLTR | Palantir Technologies | 10.3% | 17.6% |
| 6 | NRG | NRG Energy | 9.9% | -32.5% |
| 7 | CEG | Constellation Energy | 9.8% | -16.4% |
| 8 | VST | Vistra | 9.1% | -1.6% |
| 9 | VRSK | Verisk Analytics | 8.7% | -20.0% |
| 10 | ROL | Rollins | 8.0% | -46.0% |
Losers
| # | Ticker | Company Name | 1-W Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | STX | Seagate Technology | -15.1% | 174.4% |
| 2 | COHR | Coherent | -13.7% | 56.0% |
| 3 | TER | Teradyne | -13.7% | 98.5% |
| 4 | INTC | Intel | -12.8% | 174.7% |
| 5 | SNDK | SanDisk | -12.7% | 526.6% |
| 6 | WDC | Western Digital | -12.4% | 124.9% |
| 7 | ON | ON Semiconductor | -11.6% | 40.4% |
| 8 | MOS | Mosaic | -11.5% | -19.6% |
| 9 | SWKS | Skyworks Solutions | -11.0% | 20.3% |
| 10 | MPWR | Monolithic Power Systems | -10.9% | 46.3% |
Movers Over The Last Month
And over the last 21 trading days, the strongest and weakest names in the S&P 500:
Winners
| # | Ticker | Company Name | 1-M Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | P | Everpure | 58.2% | n/a |
| 2 | PTC | PTC | 48.6% | 11.6% |
| 3 | MRNA | Moderna | 48.5% | n/a |
| 4 | ILMN | Illumina | 34.0% | 110.9% |
| 5 | DDOG | Datadog | 29.9% | 111.3% |
| 6 | CRWD | CrowdStrike | 27.2% | 124.4% |
| 7 | SNPS | Synopsys | 26.5% | 7.0% |
| 8 | RVTY | Revvity | 25.2% | 61.2% |
| 9 | PLTR | Palantir Technologies | 25.0% | 17.6% |
| 10 | TWLO | Twilio | 24.3% | 98.7% |
Losers
| # | Ticker | Company Name | 1-M Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | CHTR | Charter Communications | -29.7% | -50.9% |
| 2 | MGM | MGM Resorts International | -26.5% | -19.6% |
| 3 | MOS | Mosaic | -25.2% | -19.6% |
| 4 | FICO | Fair Isaac | -24.9% | -56.2% |
| 5 | GEN | Gen Digital | -22.8% | -12.8% |
| 6 | TMUS | T-Mobile US | -16.7% | -24.0% |
| 7 | CMCSA | Comcast | -16.7% | n/a |
| 8 | APP | AppLovin | -16.4% | -59.8% |
| 9 | ALB | Albemarle | -16.2% | -29.8% |
| 10 | CMG | Chipotle Mexican Grill | -16.0% | -17.8% |
Volatility Is The Cost Of Owning Stocks. Concentration Makes It A Bill
Every name on these lists made a move big enough to notice. A diversified holder reads that as noise; a concentrated holder feels it as real money. The difference is not the stock, it is the portfolio around it.
Building that portfolio is what the Trefis High Quality (HQ) Portfolio does: roughly 30 businesses with the cash generation and balance-sheet strength to absorb bad days, selected and rebalanced by rules. It has a track record of outpacing a benchmark that combines the S&P 500, the S&P MidCap 400, and the Russell 2000. Let the movers list remind you why diversification exists.