Our technical scanner combed through the S&P 500 and Nasdaq 100 on 25 August 2026, evaluating dozens of momentum, trend, and volume indicators for every constituent. The five stocks below generated the strongest net bullish readings of the session. As always, technical signals should be considered alongside your own research and risk tolerance.
1. Costco Wholesale (COST) – 18 technical buy signals
Price: $971.40 | Daily change: +2.5%
View the full technical analysis of Costco Wholesale
Costco tops today’s leaderboard with a perfect 18 bullish signals and zero bearish readings — a rare clean sweep across our entire indicator suite. The stock gained 2.5% on the session, continuing what has been a strong medium-term uptrend, with momentum, moving average, and volume indicators all aligned in the same direction.
On the fundamental side, Costco has been making headlines with its expansion into Medicare Advantage insurance, launching co-branded plans through a partnership with SCAN Group. The move extends Costco’s long-standing strategy of broadening its member value proposition well beyond the warehouse floor, and early market reaction has been positive. Investor’s Business Daily noted that the stock set up near a technical entry point around the time of the announcement.
It is worth noting that some analysts consider Costco’s valuation to be full relative to near-term earnings growth, even after accounting for its impressive five-year total return. The technical picture is constructive today, but investors would be wise to weigh that premium valuation carefully before acting.
2. Arch Capital Group (ACGL) – 14 technical buy signals
Price: $101.14 | Daily change: +1.76%
View the full technical analysis of Arch Capital Group
Bermuda-based specialty insurer and reinsurer Arch Capital Group comes in second with 14 bullish signals against just 4 bearish readings, representing a strong net score. The stock crossed the $101 mark today, building on a remarkable multi-year run that has seen shares appreciate by more than 175% over five years.
A notable recent development was the disclosure that CFO Francois Morin exercised stock options and subsequently sold a portion of his shares in mid-August. Insider sales following option exercises are a routine part of executive compensation and do not necessarily indicate a change in the company’s outlook, though they are worth monitoring as part of the broader picture.
Several independent analyses have suggested that ACGL may still be trading below its intrinsic fair value, even after its extended rally. The specialty insurance and reinsurance market continues to benefit from firm pricing conditions in many lines, which underpins the constructive analyst tone around this name. The technical momentum today appears consistent with that medium-term bullish thesis.
3. Moody’s Corporation (MCO) – 13 technical buy signals
Price: $511.35 | Daily change: +1.6%
View the full technical analysis of Moody’s Corporation
Moody’s Corporation, the global credit ratings and analytics group, earns third place with 13 bullish signals and just 1 bearish reading. The stock added 1.6% today, nudging it further above the $500 level. From a technical standpoint, the indicator spread is impressively clean, suggesting broad-based momentum rather than a signal confined to a single indicator family.
Moody’s is a long-standing holding of Warren Buffett’s Berkshire Hathaway, a fact that continues to attract attention from retail and institutional investors alike. Berkshire has held the position since the early 2000s, and commentators regularly cite it as an example of a high-quality, durable-moat business. Wolfe Research raised its price target on the stock earlier this year, reflecting confidence in the company’s earnings trajectory.
The company operates in a structurally attractive position: as global debt issuance fluctuates and demand for risk analytics grows, Moody’s benefits from both its ratings franchise and its expanding data and analytics division. The combination of a tidy technical setup today and well-documented fundamental quality makes this one of the more compelling names on today’s list for investors conducting deeper due diligence.
4. Arthur J. Gallagher & Co. (AJG) – 12 technical buy signals
Price: $271.99 | Daily change: +3.1%
View the full technical analysis of Arthur J. Gallagher & Co.
Insurance brokerage giant Arthur J. Gallagher posted the second-largest single-day gain on today’s list, rising 3.1% to close just under $272. The scanner returned 12 bullish signals against 5 bearish readings — still a firmly positive net score, though the presence of some contrary signals is worth bearing in mind. The price action was notably strong and was accompanied by supportive volume indicators.
The company has been in the spotlight recently following its integration of AssuredPartners, a large acquisition that analysts believe meaningfully expands AJG’s organic growth runway and enhances its margin profile. A recent review on Seeking Alpha highlighted how Gallagher’s shares have climbed around 16% over a relevant period, attributing the move largely to underlying business fundamentals rather than valuation re-rating alone.
AJG has built a reputation for consistently beating earnings estimates, and its first-quarter 2026 results were described as strong, with brokerage revenues ahead of expectations. The stock’s ability to combine steady organic growth with disciplined acquisitions has made it a favoured name among quality-focused investors. Today’s technical strength may be reflecting renewed confidence in that growth story following recent news flow.
5. BXP, Inc. (BXP) – 12 technical buy signals
Price: $69.99 | Daily change: +3.43%
View the full technical analysis of BXP, Inc.
BXP, Inc. — formerly Boston Properties — rounds out today’s top five, matching AJG with 12 bullish signals and 5 bearish readings, while posting the strongest percentage gain of the entire group at +3.43%. The office-focused real estate investment trust closed just a fraction below the $70 level, a figure that is notable given that Scotiabank’s June 2026 upgrade to Outperform came with a price target at exactly that mark.
BXP operates a portfolio of premier office and life-science properties concentrated in major gateway cities, and the company raised its full-year 2026 funds from operations guidance to a range centred around $7 per share. Occupancy has been improving, and management’s commentary around leasing activity has grown more constructive over recent quarters, helping to rebuild investor confidence in the office REIT sector more broadly.
That said, analysts have flagged several headwinds that investors should weigh carefully. Uneven rental rate spreads across the portfolio, ongoing development expenditure, and refinancing obligations in a higher-rate environment remain genuine risks. BXP’s risk profile is therefore somewhat more complex than the other names on today’s list, and the 12-versus-5 signal split reflects that mixed picture. The technical momentum is positive, but this name warrants thorough due diligence.
Disclaimer: This article is published by the Wall Street Stock Investors Club for informational and educational purposes only. Nothing contained herein constitutes financial advice, a solicitation, or a recommendation to buy or sell any security. Technical signals are generated by automated scanning tools and reflect past price and volume data only; they do not guarantee future performance. All investing involves risk, including the possible loss of principal. Readers should conduct their own research and consult a qualified financial adviser before making any investment decision.