Wednesday's Big Rally Cooled Fast. Thursday's Split Open Rolled Over Into a Broad Selloff Led by Chips

One day after Wall Street threw a party, Thursday turned ugly. The post-election relief rally that carried stocks higher on Wednesday, the same move that pushed Apple back above a $5 trillion market value, did not last. Thursday opened mixed. In the first minutes the Dow Jones Industrial Average was modestly higher, the S&P 500 was close to flat, and the technology heavy Nasdaq was lower, held down by chip stocks. That early split did not hold. A selloff in semiconductor and artificial intelligence stocks snowballed through the morning and pulled the whole market down with it.

By late morning the damage was broad. As of around 11 a.m. Eastern the Dow was down about 1,146 points, or 2.1 percent, the S&P 500 had fallen about 3.2 percent, and the Nasdaq Composite was off about 5 percent, having erased its post-election bounce, according to the Associated Press. The selling was led by semiconductors. Nvidia, the biggest drag on the S&P 500 Thursday, dropped 8.3 percent, and Advanced Micro Devices tumbled about 15.9 percent, with chip and AI names leading the decline.

That is a sharp turn from Wednesday, when the Dow jumped 3.03 percent, about 1,569 points, to finish at 53,356.12, its best single session since April 2025, while the S&P 500 climbed 1.58 percent and the Nasdaq added 1.44 percent. None of this means the longer rally is over. A huge one day move is often followed by a violent reaction as traders reassess what they bought.

What flipped the mood

Wednesday's gains followed Tuesday's midterms, in which the Democratic Party won control of both the House and the Senate along with several closely watched governor races. Markets often prefer resolved uncertainty to any one result, and the clean outcome let traders stop guessing, at least for a day. By Thursday a new worry had replaced the old one. Investors began to fear that a Democratic Congress, together with those state level wins, could slow the enormous buildout of AI data centers and bring tighter scrutiny to the industry. That is a narrower fear than broad election risk, and it landed on a specific, crowded corner of the market.

Why chips were the sore spot

The clearest pressure point was semiconductors, and two earnings reports set the tone. Qualcomm fell about 9 percent. Its results were a mixed bag. The company reported adjusted earnings of $2.17 per share, which edged past Wall Street's estimate, on revenue of about $10.32 billion that also beat forecasts but fell roughly 8 percent from a year earlier. The soft spots were in the detail. Its smartphone chip business, by far the largest, came under pressure as rising memory costs pushed phone makers to raise prices and trim orders, and guidance for the current quarter came in light on profit. A bright spot was automotive, where revenue jumped, but those longer term numbers did not calm the selling.

Arm Holdings told a cleaner story on paper and still could not escape the tide. In its fiscal 2027 second quarter results, released November 4 and covering the three months ended September 30, 2026, it beat on both the top and bottom lines, with adjusted earnings of 52 cents per share, up from 39 cents a year earlier, and revenue of about $1.44 billion, up 27 percent and a record for the quarter. It even guided current quarter revenue above what analysts expected. The stock slipped anyway, swept up in the broad rush out of chip and AI names.

For Qualcomm there were real reasons for caution: revenue fell from a year ago, the smartphone business was under pressure, and management pointed to thinner margins ahead. Arm, by contrast, delivered a double beat and still fell. That gap is a clue that part of Thursday was not about any single company. When a group has run up a long way and expectations are sky high, investors sometimes sell almost anything in the neighborhood at the first sign of nerves, which can turn an ordinary pullback into a stampede. We saw a version of that earlier in the week, when an AI rout masked a quiet rally in the rest of the market.

How a split open became a broad selloff

For a few minutes on Thursday the Dow and the Nasdaq told different stories, and the reason is how the two indexes are built. The Nasdaq Composite is heavy with technology and chip names, so when semiconductors sell off, it feels the pain directly and immediately. The Dow holds only 30 companies and is price weighted, meaning a stock with a high share price pulls harder on the average than a stock with a low one, so a rotation into steadier old economy names can prop it up. That is why the open looked split. But the chip selling was large enough that it eventually dragged everything lower, and by late morning even the Dow was well into the red.

Even so, the damage was not spread evenly. The deepest losses were concentrated in the chipmakers and the companies tied most tightly to AI spending, while some corners of the market held up better. Apple slipped only modestly, staying near its $5 trillion market value and near the top of the global leaderboard, according to StockAnalysis. Some money appeared to rotate toward big companies that already own data center capacity rather than the firms racing to build it.

What it means for your money

If you own a broad index fund or a target date fund, you very likely hold many of these names, winners and laggards alike. A plain S&P 500 fund weights companies by size, so the biggest names carry the most weight, while a target date fund also spreads money across stocks, bonds and sometimes other assets, so any single stock matters even less. That spread is the quiet advantage of owning a basket rather than a few tickers. A brutal day for chipmakers is usually a smaller line item in a diversified fund than it feels like in a headline. The flip side is that when a handful of giant companies lead, your fund leans on them too, which is why it helps to understand how much of one stock is too much before you add more on your own.

The honest takeaway from a day like Thursday is that single sessions, and especially single mornings, are noise more often than signal. A market that soars one day and tumbles the next has not changed its long term direction in 24 hours. The math that actually builds wealth is slow and boring, not tied to any one headline. The calculator below lets you test that idea with your own numbers.

What to watch next

A few things could still move the tape. Oil steadied after Wednesday's steep drop, with Brent crude rebounding about 2.2 percent to around $96.70 a barrel in the same late morning snapshot, according to the Associated Press, as traders weighed what the election might mean for tensions in the Middle East. On the economy, weekly jobless claims ticked lower, a sign the labor market was still steady. The bigger data point lands Friday, November 6, at 8:30 a.m. Eastern, when the Labor Department is scheduled to release the October employment report, the kind of number that tends to matter more for the Federal Reserve's next rate decision than any single trading session.

There is also a political thread in the background. With Democrats taking the Senate, the path for the White House to reshape the leadership of the Federal Reserve narrows, which markets generally read as a vote for central bank independence. That is a slow burning story rather than a reason for any single trade today, but it is part of why the relief from the election is holding even as individual stocks tumble.

For now, the simplest and truest summary is this. Wednesday was a big, broad up day. Thursday started split and then rolled over into a steep, chip led selloff that gave back most of Wednesday's post-election rally by late morning. If you have a plan, a day like this is a chance to do nothing on purpose.