§ Claim under review · Fact
"In the first half of September, Skyworks Solutions was the top-performing S&P 500 stock with a gain of 31.28%, followed by Dell Technologies (+19.56%), Best Buy (+16.89%), and Meta Platforms (+16.36%), among 15 S&P 500 companies with gains exceeding 7%."
Verdict
Mostly accurate
Confidence
MediumSummary
A widely shared post says Skyworks Solutions was the best-performing S&P 500 stock in the first half of September 2026, up 31.28%, ahead of Dell, Best Buy and Meta. The top-line ranking checks out. Multiple independent outlets reported that Skyworks was the index's standout gainer in that period, driven by news that its roughly 22 billion dollar merger with Qorvo had entered its final stage, with the stock posting its strongest week since 2009. The exact percentage is harder to pin down: retrieved closing prices of 67.01 on 31 August and 90.00 on 15 September 2026 work out to about 34% for the month to date, so the 31.28% figure appears to be a snapshot taken before the close on 15 September rather than a close-to-close figure. The post does not state its cutoff time, its starting date, or whether the numbers are price returns or total returns, which is why two-decimal precision overstates how exact these figures are. The figures for the other fourteen companies, and the count of 15 stocks above 7%, were not independently verified, and the Bloomberg Línea article cited as the source could not be located. The list's composition is otherwise consistent with the real index, including Reddit, which joined the S&P 500 on 18 August 2026. General information only, not financial advice.
The readings
key figures from the evidenceSWKS claimed top S&P 500 gain, 1-15 Sept 2026
SWKS implied month-to-date gain from retrieved closes (31 Aug to 15 Sept close)
SWKS single-session gain, 15 September 2026 close vs prior close
Why this verdict
Evidence
Independent reporting confirms the central ranking. Skyworks Solutions was up 28% over the past five days as of 11 September 2026 and on track to be the S&P 500's best weekly performer, as investors priced in improving odds that its merger with Qorvo would close this year as regulatory reviews advanced.
The chipmaker rallied 22% that week, a move that would mark its best five-day stretch since 2009 and one of only a handful of 20%-plus weeks in the company's listed history, with the catalyst being consolidation.
Skyworks shares rallied after CEO Phil Brace said the $22 billion Qorvo merger had entered its final stages and should close by year-end.
The rally continued into the 15 September session. On Tuesday 15 September 2026, US stocks closed lower under pressure from a jump in Treasury yields and another sharp rise in oil, and within technology Skyworks Solutions climbed 13.5%, driven by new signals on the progress of its roughly $22 billion merger with Qorvo, which is in its final stage.
In that session the S&P 500 fell, with Skyworks (+13.55%), Revvity (+9.06%) and APA (+5.29%) standing out among the gainers.
On price levels: a market-data aggregator records SWKS closing at 90.00 on 15 September 2026, up 13.55% from the previous close of 79.26 as of 15 September 4:00 p.m. GMT-4 ; TheStreet Pro records the 14 September close at 79.26, down 9.09 or 10.29% ; Bloomberg's quote page shows 88.35 USD for 11 September 2026 ; and Macrotrends records the latest closing price as of 31 August 2026 at 67.01 .
On index membership, the inclusion of Reddit in a list of S&P 500 stocks checks out: S&P Dow Jones Indices said Reddit Inc. would become a member of the index beginning Tuesday 18 August 2026, replacing AvalonBay Communities, which is being acquired by Equity Residential .
The macro framing in the caption also matches the record: the 15 September selloff was driven by a jump in Treasury yields and a sharp rise in oil, a combination that raised inflation and tightening expectations ahead of the Federal Reserve decision , which is consistent with three refiners (Marathon Petroleum, Valero, Phillips 66) and APA appearing in the list.
Findings
✓ What's accurate 6
- Skyworks Solutions was the standout S&P 500 gainer in the first half of September 2026, by a wide margin, and the ranking as number one is corroborated by at least three independent outlets across 11 and 15 September 2026.
- The magnitude is in the right region. A 31% month-to-date gain as of mid-session on 15 September 2026 is consistent with the retrieved closing prices of 67.01 on 31 August and 90.00 on 15 September.
- The stated driver in the caption is accurate: the move was merger-driven, tied to the Qorvo transaction reaching its final approval stage, per the company CEO's own remarks as reported.
- The market context in the caption (September pressure from bonds and oil) matches the 15 September 2026 session reporting.
- The list is internally coherent with the index's actual membership. Reddit was a genuine S&P 500 constituent as of mid-September 2026, having been added on 18 August 2026, and The Trade Desk, APA, DaVita and West Pharmaceutical are index members.
- The presence of Dell, HP Inc. and other hardware names in the top ranks is consistent with independent gainer lists from 11 September 2026.
≈ What's misleading 3
- **Omitted qualifier:** the post gives percentages to two decimal places but publishes no cutoff timestamp, no base date, and no return basis. The difference between a 31 August close base and a 1 September close base, and between an intraday and a closing snapshot, moves the headline figure from roughly 31% to roughly 34% for the same stock over the same nominal window. Two-decimal precision implies a exactness the stated methodology does not support.
- **Gross vs net:** the post does not say whether these are price returns or total returns. For a two-week window the gap is small, but it is left to the reader to assume, and the post does not name the basis.
- **Temporal overreach (mild):** a partial-month leaderboard is presented as a settled result. The underlying stock fell 10.29% on 14 September and rose 13.55% on 15 September, so the exact percentages and the ordering below the top spot were changing by double digits within single sessions. The number one ranking was robust; the precise figures were not.
? What's uncertain 5
- The exact figure 31.28% could not be reproduced from retrieved closing prices. It is consistent with a pre-close 15 September snapshot, but that reconstruction is inference, not a retrieved methodology statement.
- The figures for Dell (19.56%), Best Buy (16.89%), Meta (16.36%) and the remaining eleven names were not independently verified. No per-stock month-to-date series was retrieved for them.
- The count "15 S&P 500 companies with gains exceeding 7%" was not verified. It is internally consistent with the published list, whose fifteenth entry is Phillips 66 at 7.58%, but no independent screen was obtained.
- The cited Bloomberg Línea article was not located, so the original methodology note, the data vendor used, and the exact as-of timestamp could not be read.
- No primary exchange or index-provider record was retrieved for any price in this case. All price levels come from market-data aggregators.
Sources
10 of 10 linked to recordsÁmbito, market wrap for the 15 September 2026 session
Benzinga, "Skyworks Solution Stock Eyes Best Weekly Rally Since 2009", 11 September 2026
Benzinga, "Skyworks Stock Poised to Be S&P 500's Best Stock This Week", 11 September 2026
El Economista, live market blog dated 16 September 2026
Yahoo Finance, "Reddit (RDDT) Is Joining the S&P 500", 15 August 2026, reporting the S&P Dow Jones Indices announcement
MSN Dinero quote page for SWKS: close 90.00, +13.55% from prior close 79.26, 15 September 2026 16:00 ET
TheStreet Pro quote page for SWKS: close 79.26 on 14 September 2026, -10.29%
Bloomberg quote page for SWKS: 88.35 USD, 11 September 2026
Macrotrends SWKS price history: closing price as of 31 August 2026 is 67.01
Seeking Alpha, S&P 500 gainers list, 11 September 2026 (HPQ, FLEX, NTAP, SWKS, SMCI, CDW, HPE, DELL among movers)