--- title: "Nasdaq-100 fund rose 0.63% as 3,418 U.S. stocks fell" url: "https://etf.net/news/nasdaq-100-fund-rose-0-63-as-3-418-u-s-stocks-fell-2026-09-18" published_at: "2026-09-18T20:58:15.113Z" updated_at: "2026-09-18T20:58:15.113Z" byline: "ETF.net Research" --- # Nasdaq-100 fund rose 0.63% as 3,418 U.S. stocks fell Friday, September 18, 2026: 2,167 of 5,845 U.S. common stocks advanced; Nasdaq-100 fund QQQ gained 0.63% while equal-weight S&P 500 fund RSP fell 0.48%. By ETF.net Research. Published Sep 18, 2026. [After the Fed hike, 3,480 stocks rose](https://etf.net/news/after-the-fed-hike-3-480-stocks-rose-the-s-p-500-still-needed-chips-2026-09-17) on Thursday. On Friday the majority went the other way, and the Nasdaq-100 fund kept climbing anyway. Among **5,845** U.S. common stocks listed on the NYSE, Nasdaq and NYSE American, **2,167** advanced and **3,418** declined. That is **37%** rising. The Nasdaq-100 fund QQQ still gained **0.63%**. The S&P 500 fund SPY slipped **0.12%**. The equal-weight S&P 500 fund RSP fell **0.48%**, giving back Thursday's **0.49%** rise, and the Russell 2000 small-cap fund IWM dropped **0.49%**. Chart: Only **QQQ** finished higher among the four funds Thursday's broad session lasted one day. ## Equal-weight S&P 500 lagged by 0.36 percentage points RSP trailed SPY by **0.36 percentage points** on Friday. That is not a rounding difference. The cap-weighted fund holds **39%** in technology; the equal-weight fund holds **17%**. When a handful of semiconductor stocks rise and the rest of the board does not, those two portfolios are different markets. On September 11, [equal-weight S&P 500 was down 2.8% in a month as the cap-weighted fund fell 1.1%](https://etf.net/news/equal-weight-s-p-500-is-down-2-8-in-a-month-as-the-cap-weighted-fund-fell-1-1-2026-09-11). As of Friday those trailing one-month figures are down **4.4%** for RSP and **0.71%** for SPY, a gap of 3.7 percentage points. IWM is down 5.6% over the same month. StreetStats, as of the close on Thursday, September 17, put **31%** of S&P 500 members above their 50-day average and said participation remains narrow beneath the index. Eight of 20 mega-cap stocks rose. Nvidia gained **1.3%**, Broadcom **3.0%**, Amazon **1.0%** and Alphabet **0.6%**. Twelve fell, including Microsoft (**-0.8%**), Apple (**-0.3%**), Meta Platforms (**-2.4%**) and Netflix (**-4.7%**). Netflix's drop followed a Wells Fargo downgrade to underweight and a price-target cut to $57 from $80, reported Friday. Cap-weighted Nasdaq-100 and semiconductors rose. Equal-weight S&P 500 and small-caps gave back Thursday's gains. The utilities sector fund XLU closed at $41.09, a cent above its 52-week low. Table: What you hold, Friday, 1-month ## Micron, Sandisk, Nvidia and AMD added 0.53 percentage points QQQ did not rise because the Nasdaq-100's typical stock rose. Micron, now the fund's fourth-largest holding at **4.9%**, gained **3.9%** and added **0.19 percentage points**. Sandisk jumped **11.0%** and added **0.12**. Nvidia added **0.11**. Advanced Micro Devices added **0.11**. Those four positions contributed **0.53 percentage points** to a fund that gained 0.63%. Meta subtracted **0.08 percentage points**, Netflix **0.07**, Qualcomm **0.05** and Microsoft **0.05**. Inside the same index, memory and GPU names more than offset the software and streaming names that fell. The semiconductor fund SMH rose **2.21%**, extending Thursday's **2.76%** gain. The S&P 500 technology sector fund XLK added **0.82%**. Nvidia, Broadcom and Micron together added **0.25 percentage points** to SPY. [Wednesday's session](https://etf.net/news/nasdaq-100-fund-edges-higher-as-3-494-stocks-fall-fed-s-first-hike-since-2023-2026-09-16) had the same shape: 3,494 stocks fell, and the Nasdaq-100 fund still edged higher after the Federal Reserve's first rate increase since 2023. Friday restored that split. The CBOE Volatility Index, priced off S&P 500 options, fell **4.1%** to **14.81** after the close, as of 4:14 p.m. Eastern. That is a reading on the cap-weighted S&P 500, where SPY barely moved, not on the 3,418 stocks that declined. Source: etf.net, https://etf.net/news/nasdaq-100-fund-rose-0-63-as-3-418-u-s-stocks-fell-2026-09-18. Please cite the page URL.