Our technical scanner runs daily across the S&P 500 and Nasdaq 100, measuring a broad range of momentum, trend, and oscillator indicators to flag stocks showing either accumulation or distribution. When bear signals significantly outnumber bull signals, a stock appears on our short-candidate watchlist. Below are the five names generating the strongest technical sell signals on 22 September 2026. A short candidate is simply a stock that technical analysis suggests may be entering a period of price weakness — it is not a recommendation to act.
Important risk warning: Short selling carries substantially greater risk than buying equities. Losses on a short position are theoretically unlimited, margin requirements can force early exit, and stocks subject to bearish technical pressure can still experience sharp short-covering rallies. Always size positions carefully and consult a qualified financial adviser before taking any short exposure.
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 short-candidate list with 13 bear signals against only 3 bull signals, accompanied by a notable single-session decline of nearly 4%. The technical picture is notably weak despite what has been, on the surface, a reasonably solid fundamental story. The defence and technology contractor reported record quarterly revenue of $4.56 billion in its second quarter of fiscal 2026, representing 7% year-over-year growth, and subsequently raised its full-year outlook — news that briefly lifted the shares by double digits in late July.
However, the market’s enthusiasm appears to have faded considerably since then. A recent Barchart analysis noted that Leidos has been lagging the broader market over the trailing twelve months, and Jefferies trimmed its price target on the stock in late July, even while maintaining a constructive longer-term view on the space-technology theme. The gap between the company’s improving operational metrics and its deteriorating price action is a classic technical warning sign worth monitoring closely.
The new partnership with The Modern Data Company on federal AI data infrastructure and the launch of the Parcata AI platform in collaboration with DHL for UK defence are genuine business developments, but they have so far done little to provide sustained price support. Investors considering the short side should be aware that defence contractors can benefit from sudden contract announcements or geopolitical tailwinds that produce sharp upward moves with little warning.
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 matches Leidos on bear signal count at 13, but today’s price decline of more than 5% makes it the weakest performer by daily move among our top five. The global advertising and communications group has faced a confluence of negative pressures in recent sessions. Reports from mid-September noted that the stock had already shed around 4% in a single session as it broke below key moving averages, and this week’s action suggests that selling pressure has intensified rather than abated.
A leadership change disclosed around 18 September added an element of management uncertainty that markets appear to be pricing in cautiously. The stock also went ex-dividend on the same date, with shareholders entitled to a cash dividend of $0.80 per share — a mechanical factor that accounts for some of the near-term price adjustment, though it does not fully explain the scale of the weakness observed.
On a broader basis, Omnicom’s market capitalisation has contracted to approximately $21.6 billion, and recent commentary from analysts suggests the stock is underperforming the wider S&P 500. The advertising sector is sensitive to corporate spending cycles and any macro slowdown could weigh further on revenue visibility. With 6 bull signals still registered, the technical picture is not entirely one-sided, and short sellers should remain alert to the possibility of a recovery if macro sentiment improves.
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 stands out as today’s most dramatic mover, with a single-session drop of more than 9%, making it the most striking entry on this list despite also registering 13 bear signals. What makes PANW particularly interesting from a technical standpoint is the contrast with its recent fundamental news flow, which has been notably positive. In mid-September the cybersecurity group reported a strong fourth-quarter earnings beat, with the stock surging by over 13% in the days immediately following results, and several Wall Street analysts raised their price targets in response.
The speed with which that post-earnings rally has unwound is a meaningful technical warning signal. When a stock fails to hold gains following strong earnings, it often indicates that the good news was already reflected in valuations, or that larger participants used the rally as an opportunity to reduce exposure. Morgan Stanley had adjusted its price target upward to $410, maintaining an Overweight rating, so fundamental conviction from the sell side remains present — which adds complexity to the short thesis.
Cybersecurity is a structurally growing sector, and PANW in particular benefits from strong recurring revenue dynamics. Short sellers in this name face the risk of renewed momentum if any additional positive catalysts emerge, including contract wins or sector-wide risk-on rotation. Today’s sharp decline warrants close monitoring, but the risk-reward calculation for shorts here is particularly delicate.
4. Autodesk (ADSK) – 12 technical sell signals
Price: $241.73 | Daily change: -2.41%
View the full technical analysis of Autodesk
Autodesk registers 12 bear signals against just 3 bull signals, placing it fourth on today’s watchlist. The design and engineering software company has had a difficult period relative to the broader market, with one commentary piece noting the stock was trading approximately 32% below its level of a year ago. Its late-August earnings release delivered better-than-expected cloud revenue and profitability, yet investor attention quickly shifted to a more cautious margin outlook, prompting renewed selling pressure in the shares.
A recurring concern voiced in recent market analysis is the potential for AI-driven tools to disrupt Autodesk’s traditional software model, raising questions about long-term pricing power. The company has responded by announcing the expansion of agentic AI capabilities across its Forma, Fusion, and Flow platforms, with a global rollout of broader Assistant features planned for 2027. Whether this initiative will prove sufficient to reassure investors remains an open question for now.
On the more constructive side, one Seeking Alpha contributor characterised the stock as an attractive growth-at-a-reasonable-price opportunity, citing strong renewal rates and a positive contribution from the MaintainX acquisition. With the shares trading close to a reported 52-week low, short sellers should be mindful that valuation support at these levels may attract value-oriented buyers who could generate sudden upward pressure.
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 bear signals and 6 bull signals, making it the most balanced technical picture among our five candidates. The beverage alcohol group, best known for its Mexican beer portfolio, has faced a persistent combination of headwinds including a cost-conscious consumer, rising logistics expenses, and commodity cost pressures. Management has acknowledged these challenges directly, warning that margin compression is expected to weigh on second-half results for fiscal year 2027.
The analyst community has responded by trimming price targets, with Barclays lowering its target to $122 from $132 and Deutsche Bank reducing its target to $136 from $150, both maintaining neutral-equivalent ratings. These revisions suggest limited near-term enthusiasm from institutional research desks, which can act as a headwind to price recovery. The company has, however, taken steps to improve its balance sheet, redeeming $600 million of senior notes early — a capital allocation decision that some analysts view as a positive signal for financial discipline.
The company’s strategy of premiumising its beer portfolio and pursuing product innovation remains intact, and the appointment of a new supply chain chief could ultimately improve operational efficiency. With 6 bull signals still present in the scanner, the technical case for the short side is less clear-cut here than for the names higher on this list. Short sellers should weigh the downside risk carefully against the possibility of a re-rating if cost pressures ease.
Disclaimer: This article is published by the Wall Street Stock Investors Club for informational and educational purposes only. Nothing contained herein constitutes investment advice, a solicitation, or a recommendation to buy or sell any security. Technical analysis identifies patterns in historical price data and does not guarantee future results. Short selling involves significant risks, including potentially unlimited losses. All investors should conduct their own due diligence and consult a qualified financial adviser before making any investment decisions. The Wall Street Stock Investors Club and its contributors may or may not hold positions in the securities mentioned.