Each week our technical scanner sweeps the S&P 500 and Nasdaq 100, tallying bullish and bearish indicator readings across momentum, trend, and volatility measures to surface the most technically stretched names on either side of the ledger. Today, 11 September 2026, we turn our attention to the short side: the five stocks carrying the heaviest concentration of technical sell signals. A short candidate is simply a stock where the weight of technical evidence suggests the path of least resistance is downward — it is not a recommendation to sell or short any security.
Important risk warning: Short selling involves risks that exceed those of a standard long position. Losses on a short trade are theoretically unlimited, borrowing costs can erode returns, and stocks can be subject to short squeezes that move prices sharply against the position. Always assess your own risk tolerance and consult a qualified financial adviser before taking any short position.
1. Leidos (LDOS) – 13 technical sell signals
Price: $133.78 | Daily change: -3.88%
View the full technical analysis of Leidos
Leidos leads today’s bearish scan with the maximum score of 13 technical sell signals against only 3 bull signals, while the shares shed nearly 4% in a single session. The S&P 500 defence and IT services contractor has endured a turbulent 2026: after a sharp decline early in the year, the stock staged a partial recovery through the summer before rolling over again. As recently as late July the price was still trading in the $114–$115 range, making today’s elevated reading at $133.78 a level that has attracted fresh selling pressure.
From a fundamental backdrop, the company has faced headwinds from uncertainty surrounding Health IT contract awards, which weighed heavily on sentiment in the first quarter. Although some analysts have highlighted apparent value at depressed price levels, and the stock did attract positive commentary from Zacks as recently as 4 September, the technical picture tells a more cautious story. A wide gap between the current reading of 13 bear signals and just 3 bull signals suggests that momentum, trend, and possibly volatility indicators are broadly aligned to the downside.
It is worth noting that several commentators have flagged the shares as potentially oversold at various points this year, and fundamental value arguments exist. Technically, however, the weight of evidence at present is firmly bearish, and the day’s price action reinforces that picture. Traders considering a short position should be mindful that any positive contract announcement or earnings surprise could trigger a rapid reversal.
2. Omnicom Group (OMC) – 13 technical sell signals
Price: $81.76 | Daily change: -5.03%
View the full technical analysis of Omnicom Group
Omnicom Group shares the top bearish score of 13 sell signals but carries slightly more conflicting evidence than Leidos, with 6 bull signals in the mix. The stock fell more than 5% today, extending a slide that was already evident the previous session when it slipped around 4.2% to $77.72 and broke below key moving averages, according to market commentary from 10 September. Today’s bounce back above $81 may indicate intraday volatility rather than a genuine recovery.
The fundamental backdrop adds to the technical concern. Omnicom reported second-quarter 2026 results in late July that showed a dramatic surge in revenues — driven in large part by its merger-related consolidation — yet the profitability picture disappointed the market, with shares falling on what was described as a significant miss on the earnings side. Even a revenue beat of that magnitude failed to provide lasting support, which is a classically bearish technical signal: good news that cannot lift a stock is often a warning sign.
It is only fair to note that Omnicom has delivered a meaningful total return over the past five years, and some analysts consider the cash flow generation solid. The near-term technical deterioration, however, is hard to ignore. With price action breaking below moving averages and sell signals heavily outweighing buy signals, the technical case for caution is clear. Potential short sellers should watch closely for any stabilisation of the advertising sector or positive macro data that could provide a catalyst for recovery.
3. Palo Alto Networks (PANW) – 13 technical sell signals
Price: $328.48 | Daily change: -9.28%
View the full technical analysis of Palo Alto Networks
Palo Alto Networks is today’s most dramatic mover among our short candidates, shedding more than 9% in a single session. The cybersecurity giant carries 13 technical sell signals and only 3 bull signals — the same top-tier bearish score as Leidos. The stock had already experienced a sharp post-earnings decline at the start of September, when it opened down more than 9% following its fourth-quarter results despite beating revenue expectations and issuing solid guidance. That pattern — a fundamentally creditable report met with a sharp sell-off — is notable and worth examining carefully.
Throughout the summer, sentiment had been broadly constructive. Analysts raised price targets ahead of earnings, a peer-driven cybersecurity rally lifted the stock in late August, and the company’s artificial intelligence security business was cited as a significant growth driver. Yet the market’s response to the earnings release was decisively negative, and the technical damage from that move has clearly not been repaired. Today’s renewed weakness suggests that the stock is struggling to find buyers at current levels.
Longer-term bulls point to Palo Alto’s competitive positioning in AI-driven security and its expanding platformisation strategy. These are credible structural arguments. However, from a purely technical standpoint, the current configuration — maximum sell signals, minimal buy signals, and two large single-day declines within a fortnight — warrants close attention. Traders considering a short here should be aware that high-profile cybersecurity stocks can recover rapidly on sector news or analyst upgrades.
4. Autodesk (ADSK) – 12 technical sell signals
Price: $241.73 | Daily change: -2.41%
View the full technical analysis of Autodesk
Autodesk enters the bearish scan with 12 sell signals against 3 bull signals and a 2.4% daily decline. Notably, just one day earlier — on 10 September — the stock reportedly fell more than 16% to become one of the top losers on the Nasdaq, a dramatic single-session move that has left a significant mark on the technical indicators. Today’s further decline of 2.4% suggests that selling pressure has not yet exhausted itself following that sharp drop.
The news flow through 2026 has been mixed. Earlier in the year the stock traded in the $208–$235 range, and the company delivered stronger-than-expected cloud revenue growth in its most recent quarterly report. However, management commentary on the cost outlook appeared to temper enthusiasm, and the share price has been volatile throughout the year. The confirmation of a share buyback and dividend programme in late August provided a temporary lift but did not sustain momentum.
Autodesk operates in the design and engineering software space, where long-term secular growth drivers remain intact through construction, manufacturing, and infrastructure investment cycles. That fundamental story may well reassert itself over time. For now, the technical picture is firmly negative: 12 bearish signals, fresh multi-month lows, and two large down days in quick succession. Prospective short sellers should be aware that beaten-down software stocks with strong balance sheets can attract value buyers quickly, creating sharp short-covering rallies.
5. Constellation Brands (STZ) – 12 technical sell signals
Price: $129.35 | Daily change: -0.98%
View the full technical analysis of Constellation Brands
Constellation Brands rounds out today’s list with 12 technical sell signals and 6 bull signals — the most balanced bearish-to-bullish ratio among our five candidates, suggesting that not all indicators are aligned to the downside. Nevertheless, the weight of evidence remains clearly bearish. The shares declined roughly 1% today, a relatively modest move on the day but one that follows a period of sustained underperformance versus the broader consumer defensive sector.
Recent news paints a challenging picture for the beer, wine, and spirits company. Reports from the past week indicate that the stock hit a fresh 52-week low alongside fellow consumer brands Nike and McDonald’s, driven by company-specific negative catalysts. Separate commentary noted that Constellation Brands has meaningfully underperformed the consumer defensive sector over the past year — a concern given that defensives are typically expected to hold up relatively well in periods of broader market uncertainty.
The consumer staples business model — with its reliable revenues from alcohol brands including Corona and Modelo — provides a degree of fundamental stability that some of the other names on this list lack. That said, any sustained volume pressure or margin compression in its key beer segment could accelerate the technical deterioration already visible in the indicators. With the stock at 52-week lows and 12 sell signals registering, technically minded investors have reason to remain cautious. As always, a short position in a dividend-paying consumer staples stock carries the additional cost of dividend payments owed to the stock lender.
Disclaimer: This article is produced for informational and educational purposes only and does not constitute investment advice, a solicitation, or a recommendation to buy or sell any security. Technical analysis identifies patterns in historical price and volume data; it does not guarantee future results. Short selling involves significant risks, including potentially unlimited losses. Always conduct your own due diligence and consult a qualified financial adviser before making any investment decision. The Wall Street Stock Investors Club and its contributors may hold positions in securities mentioned.