Thursday, November 5 represented the worst trading session for the U.S. market in over a year. the Nasdaq Composite dropped 5.52%, the S&P 500 fell 4.36%, and the Dow shed 3.44%, as Wall Street’s post-midterm optimism could not last long. Concerns around a potential weakness in AI spending reversed the post-election rally and led to almost $2.5 trillion wiped out of the U.S. market.
In the middle of this chaos, many names showed resistance and are still trading at their all-time highs. In our recent list of 10 Best All-Time High Stocks to Buy According to Wall Street, we uncover some of the stocks that still offer captivating upside to investors.
Various market sectors took a hit, including semiconductors which got affected the most. Technology was also amongst the worst-performing segments, dipping almost 8%. Just two days prior to the November 5 crash, we covered Warren Buffett’s list of the 10 best stocks with attractive upside potential.
Situations like this trigger fear within the market. But for corporate insiders, including company executives and directors, it offers attractive entry points. These insiders have a more detailed understanding of their businesses compared to investors and analysts. They know about a company’s growth prospects, margin potential, and product pipelines way before the market does.
Hence, a drop in share price does not necessarily mean that their stance on the company’s outlook would also change. Through open-market purchases out of their own pockets, the insiders send some clear signals to the market. Unlike stock awards or option exercises, these purchases come out of personal savings, and no one is forced to make them.
Methodology:
To identify relevant stocks for this article, we explored Insider Monkey’s insider-purchase database for the U.S.-listed companies with market capitalization above $1 billion. We narrowed down our search to stocks with a 1-month share price decline of more than 20%, as of November 6. Finally, we shortlisted stocks with insider purchase values above $50,000 from October 6 to November 6, and ranked stocks in an ascending order of their purchase values. Our selection excludes stock awards and option exercises from the qualifying purchases.
10. Alphatec Holdings Inc. (NASDAQ:ATEC)
1-Month Share Price Drop: -30.8%
Short Interest: 10%
Alphatec Holdings Inc. (NASDAQ:ATEC) has shed more than 30% over the last 1 month. Bears continued to pile in after the company’s revenue and earnings miss reported in its recent third quarter 2026 print. Investor concerns around the stock are linked to various factors including deflated biologics sales and a downward adjustment to its full-year outlook.
On October 30, director David M. Demski bought 60,000 common shares at a price of $6.81, resulting in a total purchase value of $408,600. The purchase increased his reported position in Alphatec from 431,635 to 491,635 shares (see all insider purchases in ATEC shares here).
Despite muted topline growth in the last two quarters, the company still holds a competitive standing within the spinal surgery space amid its innovative approach toward prone transpsoas (PTP) procedure. Madison Small Cap Fund sees upside potential for Alphatec and here is what it had to say about the stock in its Q3 2026 investor letter.
Based on data tracked across 1,000+ hedge funds by Insider Monkey, institutional sentiment toward the company remains favorable. According to 13F filing data, number of smart-money managers with long-term exposure in the stock went up marginally during the last quarter. A total of 38 hedge funds held positions by the end of Q2 2026, compared to 37 in Q1 2026.
9. SPX Technologies Inc. (NYSE:SPXC)
1-Month Share Price Drop: -20.7%
Short Interest: 3.83%
SPX Technologies Inc. (NYSE:SPXC) supplies highly engineered and solution-driven infrastructure equipment products and technologies, covering the HVAC and detection and measurement segments. The stock closed at $142.71 on November 6, extending its 2026 decline to more than 24%.
With a market capitalization of $7.15 billion, it has traded within a 52-week range of $137.86 and $251.08, and is currently priced at a trailing earnings multiple of 23.75x. With a forward P/E multiple of 14.41x, analysts are expecting earnings to expand over the coming year. See how Conestoga Capital Advisors highlighted SPX Technologies in its Q3 2026 investor letter.
On November 3, independent board member Brian Deck bought 3,000 shares for a total value of $493,020. The purchase followed the stock’s recent bearish run, bringing Deck’s total holdings in SPX Technologies to 3,742 shares (see the history of insider purchases in SPXC).
Institutional interest across 1,000+ hedge funds tracked by Insider Monkey shows a slight increase in exposure to the stock. According to 13F filing data, total number of hedge funds that held positions in the stock jumped to 39 by the end of second quarter in 2026, relative to 36 in the previous quarter.
8. Caterpillar Inc. (NYSE:CAT)
1-Month Share Price Drop: -36.1%
Short Interest: 1.84%
Caterpillar Inc. (NYSE:CAT) has dropped significantly from its record peak of $1,073.46 back in June. The bearish trend can be attributed to a cooling sentiment around the AI-infrastructure build-out, which had earlier supported the stock’s rally. Although the data center demand still continues to support power and energy sales growth, the company has delivered lower-than-expected revenue figures for traditional construction industries.
Board member James C. Fish Jr. bought 1,000 shares at a price of $620.39 on November 2, for a total consideration of $620,390. The purchase increased his reported position in Caterpillar by almost 27%, which now stands at a total of 4,714 common shares. You can see the history of insider purchases in CAT here.
The company’s record backlog of $78 billion offers strong visibility through the turn of the decade. Profitability metrics remain encouraging as it generated 20.19% operating margin and 15.21% net margin over the trailing twelve months. With management’s expectations of full-year topline growth in mid-to-high teens, Caterpillar ranked #2 in our list of 10 Best Dow Stocks to Buy for 2027.
Data tracked across 1,000+ hedge funds by Insider Monkey still shows significant amount of institutional interest in the stock. This is despite a drop in the number of hedge funds holding positions. As per 13F filings, hedge fund ownership declined from 87 funds in Q1 2026 to 84 funds in the following quarter.
7. TTM Technologies Inc. (NASDAQ:TTMI)
1-Month Share Price Drop: -50.4%
Short Interest: 6.62%
TTM Technologies Inc. (NASDAQ:TTMI) is a global supplier of mission systems, radio frequency (RF) components, RF microwave/microelectronic assemblies, and printed circuit boards (PCBs). The stock dropped close to 30% during a single session on October 22, and has fallen well below its 52-week high of $223.83 back in June.
Supply chain bottlenecks and an aggressive debt-fueled acquisition strategy has raised investor concerns in recent times. In its Q2 2026 investor letter for the “Focused Growth Strategy”, Granahan Investment Management highlighted TTM Technologies, cutting its position to a below average size.
With a market capitalization of over $7 billion, it currently trades at a trailing earnings multiple of 26.6x, which drops significantly to a multiple of 11.1x on a forward basis. This points to expectations of more than twofold jump in earnings over the coming year.
On November 5, board member Wajid Ali increased his position in TTM Technologies by almost 28%, as he purchased 10,000 shares for a total value of $631,541. He now holds a total of 45,835 common shares in the company. You can see the history of insider purchases in TTMI here.
Data tracked across 1,000+ hedge funds by Insider Monkey reveals an increasing number of smart money managers invested in the company. As per 13F filing data for Q2 2026, a total of 89 hedge funds held positions in the stock compared to 64 by the end of the first quarter.
6. HF Sinclair Corp. (NYSE:DINO)
1-Month Share Price Drop: -20%
Short Interest: 4.57%
HF Sinclair Corp. (NYSE:DINO) posted impressive headline numbers for its Q3 2026 print. However, there have been investor concerns around the lack of business diversification. Close to 90% of the recently reported adjusted EBITDA was derived through traditional refining cycles. The stock has dipped from its mid-October high of $129.37 as the company also faces margin pressures and macroeconomic headwinds.
With a market capitalization of close to $16.5 billion, the stock trades at a trailing P/E ratio of 4.95x. This looks very attractive in isolation, however, the forward earnings metric stands higher at 6.50x, indicating a drop in earnings going forward. For now margins remain strong, but there are projections of a decline as highlighted by Cambiar SMID Fund in its Q2 2026 investor letter.
Chief Executive Officer, Franklin Myers, spent $1,108,000 to buy 10,000 shares of HF Sinclair at a price of $110.80. This represented more than 5% jump in his total holdings in the company, which currently stand at a total of 207,723 common shares (see the stock’s history of insider purchases here).
Institutional interest across 1,000+ hedge funds tracked by Insider Monkey shows marginal increase in institutional exposure to the stock. According to 13F filing data, total number of hedge funds that held positions in the stock jumped to 44 by the end of second quarter in 2026, compared to 43 in the previous quarter.
5. Pampa Energy Inc. (NYSE:PAM)
1-Month Share Price Drop: -20.5%
Short Interest: 1.44%
Pampa Energy Inc. (NYSE:PAM) recently hit its new 52-week low, as the stock has dropped by almost 26% in 2026. Despite its robust operational metrics, the company’s capital-intensive investment cycle triggered such a massive sell-off, as it missed the cash flow forecasts. Financing its $900 million electrical infrastructure ambitions for a 500 MW Patagonia data center buildout adds to the concerns.
The company has yielded almost 26% profit margin over the last twelve months, and that makes its trailing earnings multiple of 5.13x highly compelling. However, negative free cash flows due to large scale spending on projects such as Rincón de Aranda shale oil development and Fértil Pampa urea plant, have resulted in growing skepticism.
Vice President, Miguel Damian Mindlin, bought 38,652 American Depository Shares of Pampa Energy on November 3 and 4. He spent a total of $2,616,098 at an average purchase price of $67.68, bringing his total position to 729,545 shares. The purchase equates to a 5.6% increase in his holdings (see the history of insider purchases in PAM).
Data tracked across 1,000+ hedge funds by Insider Monkey reveals an increasing number of smart money managers invested in the company. As per 13F filing data for Q2 2026, a total of 15 hedge funds held positions in the stock compared to 12 by the end of the first quarter.
4. Applied Digital Corp. (NASDAQ:APLD)
1-Month Share Price Drop: -38.7%
Short Interest: 23.90%
Applied Digital Corp. (NASDAQ:APLD) was amongst the names that saw a major sell-off amid regulatory restrictions on new data center approvals across Texas. The situation does not bode well for AI data center and neo-cloud operators. Applied Digital has dropped almost 32% year-to-date, as investors appear to be rotating away from debt-laden AI buildout plays.
The company’s existing debt of around $6.4 billion is not supported by its smaller cash base. This signals toward additional borrowings to supports its 800+ megawatt (MW) capacity ramp. Despite the concerns, the stock ranked #8 in our list of 10 Best 52-Week Low NASDAQ Stocks to Buy According to Billionaires, as bulls focus on the contracts behind the build.
President and Co-founder, Gechen Jason Zhang, recently raised his position in the stock by almost 12%. He bought 300,000 shares of common stock at a price of $18.86, paying a total consideration of $5,658,000. Following this purchase, his total holdings in Applied Digital clock in at 2,839,227 shares.
Based on data tracked across 1,000+ hedge funds by Insider Monkey, institutional sentiment toward the company remains strong. According to 13F filing data, number of smart-money managers with long-term exposure in the stock has been going up. A total of 59 hedge funds held positions by the end of Q2 2026, compared to 39 in Q1 2026.
3. Intel Corp. (NASDAQ:INTC)
1-Month Share Price Drop: -51.4%
Short Interest: 2.80%
Intel is undergoing a strategic shift from its position as a conventional integrated device manufacturer to a contract foundry. Hence, its success going forward rests on securing key external customers for its leading-edge nodes such as the Intel 18A and the upcoming 14A capability. It ranked #9 in our recent list of 10 Best Growth Stocks to Buy Now According to Billionaires.
The prevailing valuation multiples appear demanding for a company still going through a restructuring. The stock trades at a forward earnings multiple of 63.29x, which is clearly on the high side. The topline metrics captivate investor interest, as the price-to-sales ratio sits at 10.55 and the EV/Revenue multiple has clocked in at just 11.73. These readings highlight how the market is looking well past current earnings and betting more on expected improvements within Intel’s foundry business and product suite.
CEO Lip-Bu Tan bought 150,000 common shares at $64.73 on November 2, spending $9,709,680. This represented more than 11% increase in his position in Intel, which jumped from 1,314,669 to 1,464,669 shares (see the history of insider purchases in INTC).
Data tracked across 1,000+ hedge funds by Insider Monkey still shows significant amount of institutional interest in the stock. As per 13F filings, hedge fund ownership went up from 112 funds in Q1 2026 to 138 funds in the following quarter.
2. Galaxy Digital Inc. (NASDAQ:GLXY)
1-Month Share Price Drop: -40.6%
Short Interest: 20.64%
Galaxy Digital Inc. (NASDAQ:GLXY) has seen a reversal from its recent 52-week low of $11.78, but the stock is still down roughly 34% in 2026. It has been subject to a broader market correction across AI and data center segments. Significant debt exposure and investor concerns regarding its unleased capacity have weighed heavily on the underlying sentiment.
However, Galaxy’s core segments continue to offer encouragement as they target growing institutional demand trends for crypto adoption and AI compute workloads. Its digital assets platform delivers trading, lending, custody, and crypto-asset management solutions to institutional clients. On the other hand, its infrastructure platform operates data centers across West Texas to facilitate AI and HPC functions.
On November 5, CEO Michael Novogratz purchased a total of 760,000 shares of class A common stock for a total value of $9,864,346. You can see the history of insider purchases in GLXY here.
Institutional interest across 1,000+ hedge funds tracked by Insider Monkey shows an increase in exposure to the stock. According to 13F filing data, total number of hedge funds that held positions in the stock jumped to 45 by the end of second quarter in 2026, relative to 40 in Q1.
1. Rapport Therapeutics Inc. (NASDAQ:RAPP)
1-Month Share Price Drop: -23.5%
Short Interest: 10.03%
Share price of Rapport Therapeutics Inc. (NASDAQ:RAPP) dropped following a $350 million multi-part capital raise, involving discounted common shares and convertible note offerings. The company priced around 175 million in common stock at $21 per share, equating to a sharp 24% discount to the market price. Additionally, the company announced data for the Phase 2 bipolar mania trial of its lead candidate RAP-219.
Despite hitting its primary endpoint, the trial data exhibited a low 3.1-point edge compared to a placebo. This was in addition to a higher-than-anticipated discontinuation and agitation rates, which resulted in target price cuts by many analysts. However, the bullish narrative for the stock is backed by expansion of RAP-219 into high-value central nervous system (CNS) indications. These include acute bipolar mania as well as the planned diabetic peripheral neuropathic pain.
On October 28, director James Healy accumulated 969,480 additional common shares of Rapport at an average price of $21. He spent a total of $20,359,080 to increase his holdings by more than 52%, from 1,846,227 to 2,815,707 common shares (see the history of insider purchases in RAPP).
Data tracked across 1,000+ hedge funds by Insider Monkey reveals a marginal increase in the number of smart money managers invested in the company. As per 13F filing data for Q2 2026, a total of 24 hedge funds held positions in the stock compared to 22 by the end of the first quarter.
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