Oil at $110: S&P 500 posts worst week since June
Published on October 19, 2026
Oil at $110 took over Wall Street. Brent touched that level on Friday for the first time since May, and the S&P 500 closed out its worst week since June. Crude is backing off this Monday after Washington eased part of its sanctions on Russian energy, and US futures are pointing higher.
Why oil at $110 bends the indexes
The S&P 500 ended Friday at 7,659.44, down 1.10%. The Nasdaq Composite dropped 2.14% to 26,140.03 and the Dow held up better with a 0.34% slide, to 52,002.41, according to the AP tally. For the week, the Nasdaq lost 4.5%, its worst run since April 2025, the S&P 500 gave up 2% and the Dow gained 0.7%.
Energy explains the rest. Brent settled Friday at $109.86, up 3.7% on the day and 4.9% on the week, its highest settlement since May 19, per FinanceFeeds. WTI finished at $101.41 and is up 10.4% on the week. Attacks on shipping in the Strait of Hormuz and Ukrainian strikes on Russian refineries put a risk premium back into the barrel.
A barrel that expensive quickly turns into a rates problem. US inflation had already run hotter than expected, the 10-year yield spiked to 5.33% before easing back toward 5.08%, and the market stopped talking about cuts. Tech pays the bill, because its profits sit far out in the future.
Tech takes the hits, energy takes the money
The SOX semiconductor index fell for eight straight sessions, its longest losing streak since 2008, shedding 16% along the way, Investing.com reports. More than $1 trillion in market value left the sector in a single week. On Friday alone, S&P 500 technology fell more than 3% while energy added 2.5%.
Daniela Hathorn, senior market analyst at Capital.com, puts the test plainly: Big Tech earnings will still need to "demonstrate" that AI spending is paying off, as quoted by TheStreet. Positioning flipped fast, too. Global long-short funds lost 2.9% in the week to October 15, with the Asia-heavy books hit first.
What cheaper crude changes today
Washington waived part of its sanctions on Russian energy over the weekend. Brent slipped to $108.80 and WTI to $101.18 in early Asian trade, Reuters reports. Futures followed, with Nasdaq 100 contracts up 0.7% and S&P 500 and Dow futures up about 0.4%.
The rest of the picture is still tense. The VIX closed Friday at 19.99, up more than 21% on the day, and the Fear & Greed Index sank to 18, deep in extreme fear. Only about 28% of S&P 500 members hold above their 50-day moving average. On the macro side, China grew 4.5% year on year in the third quarter, above the 4.4% expected, and markets barely moved. Europe starts from a positive week, with the DAX closing Friday at 25,622 and the CAC 40 at 7,957, per Newsquawk. The dollar is softer, the euro trades near 1.1230 and gold is stuck below $4,200. Every session gets tracked in our daily market briefings.
Key levels today
| Instrument | Level (support / resistance) | Change (daily) | Scenario / what to watch |
|---|---|---|---|
| S&P 500 | Support 7,610, resistance 7,736 (former 50-day moving average) | down 1.10% Friday | Lose 7,610 and the September 16 low at 7,507 comes into play. Back above 7,736 and last week looks like an air pocket |
| Brent | Support $100, resistance $110 | down 0.96% early Monday | A settle above $109.50 puts $115 in play. A quiet weekend in the Gulf drags the barrel back to $100 |
| Gold | Support $4,073, resistance $4,200 | up 0.4% early Monday | Gold keeps stalling under $4,200. Clear it and the 200-day moving average at $4,295 becomes the target |
Economic calendar
- Monday, October 19, 8:30 am ET (2:30 pm Paris): US housing starts and building permits for September, seen at 1.30 million and 1.40 million, per TradingEconomics. Prints below 1.25 million would pull long yields down and give the indexes some air.
- Wednesday, October 21, 10:30 am ET (4:30 pm Paris): US crude inventories, after a draw of 8.6 million barrels last week. A second big draw and Brent heads back toward $115, which puts the pressure straight back on tech.
- Wednesday, October 21, after the close: Tesla, Meta, IBM and Texas Instruments earnings. If AI spending is confirmed with no clarity on revenue, the Nasdaq rolls over again.
- Friday, October 23, 9:45 am ET (3:45 pm Paris): US flash PMIs, seen at 55.6 for manufacturing and 57.9 for services. Below 55 on the manufacturing side, the market swaps its inflation fear for a growth fear.
The bottom line
Oil at $110 turned a tech correction into the S&P 500's worst week since June, because crude that expensive pushes any rate cut further away. Monday's pullback in the barrel buys a reprieve, but Wednesday night's earnings will decide whether the Nasdaq has found its floor.
Want this briefing in your inbox before the open? Sign up for the newsletter.
Track the levels session by session: download the TradingNerve iOS app on the App Store.
This is not investment advice. Informational content only.