Insight Guru Inc.
10/17/2026 | Press release | Distributed by Public on 10/16/2026 23:03
S&P 500 Movers | Winners: TRGP, FANG, EOG | Losers: TWLO, SMCI, FLEX
The S&P 500 slid 1.1% on Friday, October 16, while the Nasdaq-100 dropped 2.5% and the Dow Jones Industrial Average fell 0.3%. The S&P 500 is now down 1.9% over five trading days and up 0.3% over the past month.
Decliners outnumbered gainers 254 to 249 within the S&P 500. At the extremes, Targa Resources (TRGP) gained 4.4% and Twilio (TWLO) fell 10.6%.
Friday's S&P 500 Winners
The 10 S&P 500 stocks with the highest returns on Friday:
| # | Ticker | Company Name |
1-D Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | TRGP | Targa Resources | 4.4% | 62.2% |
| 2 | FANG | Diamondback Energy | 4.3% | 38.0% |
| 3 | EOG | EOG Resources | 4.2% | 55.3% |
| 4 | KMI | Kinder Morgan | 4.2% | 28.0% |
| 5 | APA | APA | 4.1% | 105.6% |
| 6 | NOC | Northrop Grumman | 4.0% | -7.7% |
| 7 | RTX | RTX | 3.7% | 6.9% |
| 8 | LMT | Lockheed Martin | 3.7% | 16.2% |
| 9 | EQT | EQT | 3.5% | 2.2% |
| 10 | NI | NiSource | 3.5% | 4.2% |
Friday's S&P 500 Losers
And the 10 S&P 500 stocks with the lowest returns on Friday:
| # | Ticker | Company Name |
1-D Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | TWLO | Twilio | -10.6% | 71.8% |
| 2 | SMCI | Super Micro Computer | -9.9% | 8.1% |
| 3 | FLEX | FLEX | -8.2% | 49.7% |
| 4 | MRNA | Moderna | -7.8% | n/a |
| 5 | PANW | Palo Alto Networks | -7.6% | 85.7% |
| 6 | STX | Seagate Technology | -7.5% | 132.8% |
| 7 | PLTR | Palantir Technologies | -7.2% | 4.7% |
| 8 | DDOG | Datadog | -7.2% | 81.7% |
| 9 | COHR | Coherent | -7.1% | 26.2% |
| 10 | P | Everpure | -7.0% | n/a |
Which Of Friday's Movers Were Already On A Run?
Super Micro Computer (SMCI) appears on both the one-day and one-month losers lists. It fell 9.9% on Friday and is down 21.6% over the past month; excluding Friday, it had already lost 13.0% over the other sessions.
Seagate Technology (STX) added to a longer slide: after Friday's 7.5% decline, the stock is down 20.4% over the past month, and it was already down 13.9% before Friday.
The 7.1% decline in Coherent (COHR) on Friday was not a one-off: the stock is down 21.3% over the past month, and down 15.3% over the sessions before Friday.
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 | FICO | Fair Isaac | 15.5% | -54.4% |
| 2 | CTSH | Cognizant Technology Solutions | 11.5% | -19.0% |
| 3 | ACN | Accenture | 10.7% | -11.4% |
| 4 | EFX | Equifax | 10.6% | -25.0% |
| 5 | BRO | Brown & Brown | 10.4% | -12.3% |
| 6 | ERIE | Erie Indemnity | 9.8% | -13.0% |
| 7 | AJG | Arthur J. Gallagher | 9.5% | -0.6% |
| 8 | TYL | Tyler Technologies | 9.5% | -20.5% |
| 9 | DRI | Darden Restaurants | 9.5% | 21.3% |
| 10 | BF-B | Brown-Forman | 9.4% | 13.8% |
Losers
| # | Ticker | Company Name |
1-W Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | CIEN | Ciena | -26.0% | 42.3% |
| 2 | COHR | Coherent | -25.5% | 26.2% |
| 3 | LITE | Lumentum | -25.3% | 123.6% |
| 4 | HPE | Hewlett Packard Enterprise | -25.0% | 132.2% |
| 5 | FLEX | FLEX | -24.5% | 49.7% |
| 6 | SMCI | Super Micro Computer | -24.4% | 8.1% |
| 7 | DELL | Dell Technologies | -22.9% | 262.1% |
| 8 | BE | Bloom Energy | -21.1% | 154.7% |
| 9 | P | Everpure | -19.7% | n/a |
| 10 | TER | Teradyne | -19.3% | 68.1% |
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 | PTC | PTC | 43.5% | 10.8% |
| 2 | MRNA | Moderna | 37.9% | n/a |
| 3 | ACN | Accenture | 21.7% | -11.4% |
| 4 | SNPS | Synopsys | 19.3% | -3.2% |
| 5 | P | Everpure | 19.3% | n/a |
| 6 | CBOE | Cboe Global Markets | 18.1% | 26.4% |
| 7 | VEEV | Veeva Systems | 17.7% | 39.0% |
| 8 | CCL | Carnival Corporation | 16.8% | -13.8% |
| 9 | TJX | TJX Companies | 16.4% | -3.2% |
| 10 | MAR | Marriott International | 16.2% | 25.8% |
Losers
| # | Ticker | Company Name |
1-M Returns |
YTD Returns |
|---|---|---|---|---|
| 1 | MOS | Mosaic | -25.9% | -19.7% |
| 2 | MGM | MGM Resorts International | -25.3% | -21.6% |
| 3 | ARE | Alexandria Real Estate Equities | -25.0% | -11.2% |
| 4 | DELL | Dell Technologies | -23.2% | 262.1% |
| 5 | WDC | Western Digital | -21.7% | 92.9% |
| 6 | SMCI | Super Micro Computer | -21.6% | 8.1% |
| 7 | COHR | Coherent | -21.3% | 26.2% |
| 8 | BE | Bloom Energy | -21.2% | 154.7% |
| 9 | STX | Seagate Technology | -20.4% | 132.8% |
| 10 | FICO | Fair Isaac | -20.2% | -54.4% |
The Tape Rewards Attention. It Punishes Reaction
Big daily moves pull hard at both greed and fear, and acting on either, day after day, is how most portfolios end up trailing the index they were trying to beat.
The Trefis High Quality (HQ) Portfolio is built for the opposite reflex: about 30 quality businesses screened for the fundamentals that survive volatile stretches, held with rules instead of reactions. It has a track record of outpacing a benchmark that combines the S&P 500, the S&P MidCap 400, and the Russell 2000. Read the movers daily; trade them rarely.
Insight Guru Inc. published this content on October 17, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on October 17, 2026 at 05:03 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]